Experimental and Numerical Studies on Fire Whirls
|
|
- Dora Miller
- 5 years ago
- Views:
Transcription
1 Expeimental and Numeical Studies on Fie Whils K. Matsuyama, N. Ishikawa 2, S. Tanaka 2, F. Tanaka, Y. Ohmiya 2, and Y. Hayashi 3 Cente fo Fie Science and Technology, Tokyo Univesity of Science, 264, Yamasaki, Noda-shi, Chiba , Japan 2 Dept. of Achitectue, Faculty of Science and Technology, Tokyo Univesity of Science, 264, Yamasaki, Noda-shi, Chiba , Japan 3 Building Reseach Institute, Tachihaa, Tsukuba-shi, Ibaaki 35-82, Japan Abstact In case that conflagation such as uban fie occued, thee is case which the swil flow, so-called fie whils sometimes geneates. The geneation of fie whils is a ae but potentially catastophic fom of fies. In ode to contol of fie whils, it is impotant to specify the geneating mechanism. In this pape, expeimental and numeical studies ae epoted on whiling flames, which modeled fie whils. A popane bune was used as a fie souce of expeiment appaatus. The distibution of tempeatue and velocity of fie whil wee measued in expeiments. Moeove, the pediction of fie whils phenomenon was caied out by using CFD code. The CFD code, which is the FDS Ve.3. developed in NIST, was used fo numeical simulation.. Intoduction * In the lage fie like an uban fie, the fie whils that is the singula phenomenon might be often geneated, and big damage be caused. The fie whils cause a theat fo the suounding because eaction against combustion is stongly pomoted, the flame height pogesses by the swil, the fie bands ae scatteed widely. Fo example, Geat Kanto Eathquake (in Japan, 923) and Humbug lage ai aid Coesponding Autho- Tel.: ; Fax: addess: kmatsu@s.noda.tus.ac.jp (in Gemany, 943) ae typical as the damage case with the fie whils. Although the phenomenon of fie whil epoted in pevious study, the main focus is instance concening damage [, 2]. The othe hand, the cause of geneation and behavio of fie whils wee eseached expeimentally and theoetically [3-5]. Howeve, the geneation mechanism and behavio of the fie whils depend on vaious paametes included contingency such as the meteoological condition. Theefoe, it is difficult to claify quantitatively and qualitatively. Moeove, Copyight Intenational Association fo Fie Safety Science
2 what stategy is effective to pevent geneation is not efeed. The pupose of this study is to claify the geneation mechanism and behavio of the fie whils qualitatively and quantitatively. Fist of all, the eductively scale model expeiments wee caied out. Moeove, the numeical simulation of fie whils phenomenon was caied out by using CFD code. sceen (calcium silicate boad) c 2 s fie souce (gas bune) 2 25 sceen (heat-esistant glass) [Plan] Figue. The schematic of expeimental model (unit: mm) Expeimental 2. Outline of Expeiment In the lage-scale fie whils geneated in Geat Kanto Eathquake and the lage ai aid in Humbug, the extenal foce of global of the Coiolis foce and the weathe, etc. is thought to be one of the impotant factos to be geneated the fie whils. Howeve, because it was used a eductive scale model appaatus in this study, these extenal foces wee disegaded. The expeiments wee caied out on the Full- Scale Fie Laboatoy at the Building Reseach Institute (in Japan). 2.2 Expeimental Pocedue The swil flame was compulsoily geneated by setting up the sceen assumed to be a building in the fie souce suoundings as shown in Figue. Because it expeimented unde calm, the swil of the flame will be geneated fo the self-induction cuent to the flame. A systematic expeiment concening the following fou paametes, which ae ) HRR (Heat Release Rate) of fie souce, 2) width of the cleaance between sceens, 3) distance between cente of fie souce and sceen, 4) height of sceen, was caied out. And, the claification of the geneation limit and the behavio wee tied. Figue 2. The expeimental model 2.3 Expeimental Model and Measuement Items () Expeimental Model As fo the expeimental model, the sceens of the calcium silicate boads and the heat-esistant glass wee set up in suoundings of the gas bune as shown in Figue. Distance between the cente of fie souce and a sceen ( s ) and width of the space between sceens ( c ) ae changed by egulaly moving the location of the sceens. Moeove, height of the sceen ( h ) is changed by egulaly moving foundation whee the souce was put up and down. The popane gas bune was used fo the souce. The size of the bune was assumed to be 2 x 2 [mm]. (2) Measuement items and method The tempeatue distibution of whiling flames, the height of whiling flames, and flame hoizontal flow velocity
3 wee measued. The measuement method of each measuement item is shown in the following. The location of measuement stating point is made to the cente of the bune, and made the z axis in the vetical diection, the x axis and the y axis in the hoizontal diection of the bune suface. a) Vetical tempeatue distibution of whiling flames To measue vetical tempeatue distibution of the flame, themocouple-net installing 48 themocouples is put in the locations shown in Figue 3. The net has type-k themocouples (5 [mm]-diam.). As shown in Figue 3, vetical tempeatue distibution was measued. simultaneous multipoint. The schematic of the PIV system was shown in Figue 4. The measuement by this system used the following device. -Camea: MEGAPLUS Camea Model ES. (KODAK) -Lase: Pulsed YAG Lase2D (JAPAN LASER Inc.) -Softwae: Vid PIV (OXFORD LASERS Co.) sceen (calcium silicate boad) sceen (heat-esistant glass) MEGAPLUS camea themocouple-net lase system video camea sceen (calcium silicate boad) faundation faundation gas buna lase sheet Figue 4. The schematic of the PIV system PC gas bune data logge Figue 3. The schematic of the measuement system b) Height of whiling flame The height of whiling flames was measued fom the distict put the heatesistant glass as one of the sceens by using a video camea. Moeove, the swiling duation was analyzed fom the video image. c) Hoizontal flow velocity of flame The hoizontal flow velocity of flame was measued by using the PIV (Paticle Image Velocimety) system. The PIV system is a measuing device that can measue the velocity field in the twodimensional suface fom time displacement of the paticle imaging to a PC 2.3 Expeimental Condition Expeimental conditions ae shown in Table. A squae gas bune as the fie souce is used, a width is [m]. Table. Expeimental conditions Paticulas Conditions Q H.R.R, 5, 2 [kw] distance between cente of fie souce and a sceen width of the cleaance between sc eens The height of the sceen s [m]. - 6 (each.2) c [m].5,., h [m],.,.5 As shown Figue, the distance between the cente of fie souce and a
4 sceen ( s ) was applied to the ange of. to 6[m] (each.2[m]), the width of the cleaance between sceens ( c ) was applied to.5,., and [m], the height of the sceen ( h ) was applied to,., and.5 [m], and HRR of fie souce ( Q ) applied to, 5, and 2 [kw]. The heat elease ate obtains [kw] fom the equation accoding to similaity law between a eductive scale model and a eal lage scale as shown in the following [6]. 2 / 5 L f f () L S Q = Q S 2.4 Expeimental Results () Height of whiling flames The height of the flame including flame tip was measued fo 6 seconds evey.3 seconds, and the aveage of the measued value was defined with the height of whiling flames. The height of whiling flames in case that the width of the cleaance between sceens ( c ) was changed was shown in Figue 5, in case that the distance between the cente of fie souce and a sceen ( s ) was changed was shown in Figue 6, in case of changing the ange of height of the sceen ( h ) was changed was shown in Figue 7. The height of whiling flames was extended as the height of the sceen ises as shown in Figue 6. The height of the flame lowes because of close to the fee buning when the distance between the cente of fie souce and a sceen expands to some degee. Moeove, the height of the flame lowes because it was located fa away flow of the swil wind, when the distance of between fie souce and sceens extends, and the width of the cleaance naows. The height of the flame ises because the entainment ai fom the uppe pat of the sceens becomes small as the sceen ises, and that has the effect denied the swil wind fom the cleaance. That is, the height of whiling flames depends on the atio of entainment ai fom the uppe pat of the sceens and the cleaance. Moeove, the appeaance of the fie whils (compaison between fee buning and whiling flames) is shown in Figue 8. It should be noted that the height of whiling flames was stetched extemely compaed with fee buning. Flame Height [m].2 <Distance between the cente of fie souce and a sceen> s: [m] s: [m] s: [m].5. Width of the cleaance between sceens (c) [m] Figue 5. Height of whiling flames in case of changing the ange of width of the space between sceens (Q :5[kW], h :.5[m], s :-[m]) Flame hight [m].4.2 <Width of the cleaance between sceens> c:.5[m] c:.[m] c: [m] Distance between the cente of fie souce and a sceen (s) [m] Figue 6. Height of whiling flames in case of changing the ange of distance of cente of fie souce and sceen (Q :5[kW], h :.5[m], c :.5-[m])
5 Flame height [m] <Distance betweem the cente of fie souce and sceen> s: [m] s: [m].5 2 Height of sceens (h) [m] Figue 7. Height of whiling flames in case of changing height of the sceens ( Q :5[kW], c :.5[m], s :, [m]) axis was shown in Figue 9. H / D 2 deceases as hc / 4s inceases. The above tendency is common to all the expeimental pattens. Moeove, the height of the whiling flame depends on the heat elease ate. (2) Tempeatue of whiling flames The distibution of vetical tempeatue was measued fo two minutes evey two seconds, and the aveage of the measued value was shown in Figue and as example. As a geneal tendency, the constiction in the flame coe was geneated by the effect on the whiling motion in a cetain height. Figue 8. Compaison of obseved flame of fee buning and whiling flame Height [m] (Q :[kw]) ( Q :5[kW]) ( Q :2[kW]) a) h :.5[m], s :4[m], c :.5[m] H/D [-] Q : [kw] Q : 2[kW] Q : 5[kW]. hc/4s 2 [-] Figue 9. Height of obseved whiling flame As the expeimental esult, the height of obseved whiling flame fo taking 2 hc / 4s in the x axis and H / D in the y Height [m] ( h :.5[m]) ( h :.[m]) ( h :[m]) b) Q :2[kW], s :[m], c :.5[m]
6 Height [m] ( c :.5[m]) ( c :.[m]) ( c :[m]) c) Q :2[kW], s :[m], h :.5[m] Figue. The distibution of vetical tempeatue Hight fom floo level [m].4.2 [kw] 2[kW] 5[kW] Tempaatue above ambient (ΔT) [K] Figue. Vetical tempeatue distibution of tajectoy of flame (3) Hoizontal flow velocity of flame The measuement esults of the hoizontal flow velocity distibution at [m] using by the PIV system ae shown in Figue 2. The whiling motion can be confimed. The density of flow velocity distibution in the vicinity of the cente has thickened as the distance between the cente of fie souce and a sceen expands in case othe conditions ae the same. That is meant that the powe of the whiling motion stengthens. This tendency can be confimed fom Figue 3, too. a) s :2[m] b) s :6[m] c) s :4[m] d) s :[m] Figue 2. Flow hoizontal velocity of flame at [m] height fom floo level (Q :2[kW], h :.5[m], c :.5[m]) Avaage Flow Velocity [cm/s] Cente of swil Cente of swil h :.[m] h : [m] Distance between the cente of fie souce and a sceen (s) [cm] Figue 3. Flow hoizontal aveage velocity of flame ( Q :2[kW], h :.5[m], c :.5[m]) 3. Numeical Simulations The effectively of the Computational Fluid Dynamics (CFD) field model as a tool that claified the physical mechanism of whiling flames was examined. In this study, Fie Dynamics Simulato (FDS) developed by McGattan et al. in National
7 Institute of Standads and Technology (NIST) was used as a simulation code [7]. Outline of the CFD models (tubulence, combustion, adiation, etc.) used in FDS [8] wee shown in the following. 3. Outline of FDS code The govening equations used in FDS consist of the consevation equations of mass, momentum, enegy, chemical species, and a state equation. ρ + ρu = t (2) u ρ + ( u ) u p = ( ρ ) g + f + τ (3) + t ( ρh) + ρhu = t Dp q + k T + Dt l ρ h ρd Y l l l (4) ρyl + ρylu = ρdl Yl + ml (5) t p = ρ TR Y i / M i (6) ( ) Whee, P is the Pandtl numbe and Sc is the Schmidt numbe. In this numeical simulation, the Pandtl numbe P and the Schmidt numbe Sc wee assumed as constant value. 3.2 Conditions of Simulation As shown in Figue 4, the egion enclosed with sceens is a calculation domain. The simulation time was assumed to be 2 seconds. As fo the x and the y axially, the equal intevals lattice was used. The width of one lattice cell is 2/3x -2 [m]. In this case, one side of the fie souce is divided into 3 at equal intevals. As fo the z axially (height), it was assumed that it divided into 8 at equal intevals. The height of one lattice cell is.625x -2 [m]. In the top opening and the space of the sceen, the condition of atmospheic open (pessue constant) was set. The outside tempeatue was assumed to be 2 [ ]. The viscous stess tenso in the motion equation is given by the following equation. 2 τ = μ 2defu ( u) I (7) 3 Whee, I is a unit matix. Moeove, Lage Eddy Simulation (LES) using a standad Smagoinsky model as a Sub Gid Scale model (SGS) [9] is pefomed in FDS. Themal and chemical species diffusion impoves by mixed effect of small eddies in tubulence flow field. In an LES, themal conductivity and chemical species diffusivity ae elated to the tubulent viscosity by μlesc p kles = (8) P μ LES ρ l, LES =. (9) Sc ( D) Velocimete Themocouple Figue 4. Schematic of the calculation domain. 3.3 Compaison between esults of si mulations by FDS and expeiments () Height of whiling flames s Fie souce
8 In Figue 5, the height of whiling flames obtained by FDS simulations and the expeiment wee shown in case that heat elease ate (Q ) was 2 [kw]. The aveage flame height, as shown following equation (), in case of fee buning that poposed by Heskestad [] was shown by the solid line in Figue 5. H D = 3.7Q *2 / 5.2. () Whee, H is the flame height [m], D is the chaacteistic of fuel size [m], * and Q is the non-dimensional heat elease ate [-]. The height of whiling flames obtained by the expeiment doubles compaed with the esults of the calculation by equation (). On the othe hand, the height of whiling flames simulated by FDS code was about a half compaed with the esults of calculation by equation (). In the expeiment, the tendency that the height of whiling flames expands was obseved as s extended. While, in the simulation by FDS code, the tendency to which the height of whiling flames shank was obseved as s extended. It is thought that the tendency is diffeent because buning behavio in the vicinity of the fie souce suface of both is geatly diffeent. L/D [-] Expeimental Equation () FDS Q * [-] Figue 5. Aveage height of the flame. a) FDS code b) Expeiment Figue 6. Schematic aveage height of the flame. (2) Tempeatue of whiling flames As an example, in Figue 7, the vetical tempeatue distibutions of flames obtained by FDS simulations and the expeiments wee shown in case that heat elease ate (Q ) was 5 [kw]. As well as the above esult on the height of whiling flames, on the vetical tempeatue distibution of flames, the simulation esults by using FDS code wee lowe than the expeimental esults. In the expeiment, the adiation fom the fie souce influences the themocouples. Theefoe, it is necessay to conside adiation fom the fie souce in FDS simulations in ode to obtain the esults coesponding to the expeiment s[m] 高さ [m] a) s :.[m] b) s : [m] Figue 7. Aveage tempeatue of the flame. (FDS, Exp.)
9 (3) Flow velocity of whiling flames The esults of FDS simulation and the expeimental esults wee compaed fo hoizontal aveage flow velocity of whiling flames in intenal and suounding. As an example, the compaison, Q was 2[kW], s wa and h was [m], was shown in Figue 8. In this case, the aveage scala quantity at hoizontal flow velocity was.4452[m/s] (FDS), and 465[m/s] (expeiment). The hoizontal aveage flow velocity of FDS simulation was faste than that of the expeiment. A compaison of expeimental esults and the FDS simulation esults was shown in Figue 9 in case that Q was 2 [kw]. As fo the expeimental esults, the tendency to fast with an incease in s was obseved while FDS simulation esults wee almost constant. 3.4 Discussions In the above, the esults FDS simulation and the expeiment wee compaed on tempeatue, height, hoizontal flow velocity of whiling flames. Howeve, thee wee diffeences in the esults of both because of the influence of the adiation to the themocouple, the diffeence of the flame behavio in the vicinity of the fie souce suface and the influences of the eddy viscosity of the eddy flow, etc. Theefoe, it seems that it is necessay to impove the computing envionment and the sub-model of FDS code to solve these poblems. The concete example is shown in the following. ) To impove the influence of the eddy viscosity by Eddy flow, the Smagoinske constant should be changed. 2) To bing the buning behavio in the vicinity of the fie souce suface, the chaacteistic of fuel size should be educed. a) FDS b) expeiment Figue 8. Compaison of aveage hoizontal flow velocity of whiling flames ( Q :2[kW], s : [m], h :.5[m], c :.5[m], h :[m]) Avaage Flow Velocity [cm/s] Cente of swil h : [m](fds) h :.[m](fds) h :.[m](exp.) h : [m](exp.) Distance between the cente of fie souce and a sceen (s) [cm] Figue 9. Aveage flow hoizontal velocity of whiling flames ( Q :2[kW], h :.5[m], c :.5[m], h :[m]) 5. Conclusion A systematic expeiment was caied out by using the eductive scale model in ode to solve the geneation mechanism and popeties of the fie whils qualitatively and quantitatively in this study. As a esult, it was confimed in the following. - The tendency that the height of whiling 2 flames deceases as hc / 4s inceases was shown. - As fo the tempeatue of whiling flame, the constiction (position in which the tempeatue lowes) is caused in cetain height by the swil.
10 - The aveage hoizontal flow velocity of whiling flames shows the tendency to incease as the distance between the cente of fie souce and a sceen ( s ) extends. In addition, the esults of simulation by using FDS code and the expeiment wee compaed fo the height, tempeatue, and flow hoizontal velocity. Howeve, the enomous discepancy was caused in both. As a cause, it is thought that thee wee the following poblems fo FDS code. - It is thought that the tendency is diffeent because buning behavio in the vicinity of the fie souce suface of both is geatly diffeent. - It is necessay to impove the influence of the eddy viscosity by Eddy flow. - It is necessay to conside adiation fom the fie souce in FDS simulations in ode to obtain the esults coesponding to the expeiment.. S. Sohma, Tonado caused by conflagation, Jounal of Japan Association fo Fie Science and Engineeing, Vol.24, No.2, pp.9-29, 974 (in Japanese) 2. Cental Weathe station, Investigation epot of Geat Kanto Eathquake, pp.-6, 926 (in Japanese) 3. Y. Hasemi:Modeling of the flamecoed fie Whil, Jounal of Achitectue and Planning, Achitectual Institute of Japan, No. 352, pp.9-24, 985 (in Japanese) 4. K. Satoh and K. T. Yang: Simulations of Swiling Fies Contolled by Channeled Self-geneated Entainment Flows,Poceedings of the 5th Intenational Symposium on Fie Safety Science, pp.2-22, H.W.Emmons and S.J.Ying: The fie whil, Poceedings of the th Combustion Symposium (Intenational), pp , Y. Hayashi, T. Saga, Expeimental Study on Tempeatue Distibutions in Fie-Induced Flows, Jounal of Envionmental Engineeing, Achitectual Institute of Japan, No. 566, pp.25-32, 23 (in Japanese) 7. URL 8. McGattan, K. et al., Fie Dynamics Simulato (Vesion3)- Technical Refeence Guide, NISTIR6783, J. Smagoinsky., Ciculation Expeiments with the Pimitive Equations, I. The Basic Expeiment. Monthly Weathe Review, 963. Heskestad. G., Luminous Height of Tublent Diffusion Flames, Fie Safety Jounal, Vol. 5, pp.3-8, 983 Refeences Nomenclatue C p : specific heat [J/kgK] C S : Smagoinsky constant [-] c : width of the cleaance between sceen D : chaacteistic of fuel size [m] diffusion coefficient [m 2 /s] g : acceleation of gavity [m/s 2 ] H : height of flame [m] h : height of sceen [m], enthalpy [J/kg] h : height of measuement point [m] k : themal conductivity [W/mK] I : adiation intensity [W/m 2 st] M : molecula weight [-] m l : poduction ate of l th species pe unit volume [kg/m 3 s] P : pessue [Pa] P : Pandtl numbe [-]
11 Q : heat elease ate [kw] * Q : non-dimensional heat elease ate [-] R : univesal gas constant [J/kgK] S C : Schmidt numbe [-] s : distance between the cente of fie souce and a sceen [m] t : time [s] T : tempeatue [K] Y : mass faction [-] f : extenal foce vecto [N/m 3 ] q : adiative heat flux vecto [W/m 2 ] u : velocity vecto [m/s] κ : absoption coefficient [-] ρ : density [kg/m density (kg/m3)] μ : viscosity coefficient [kg/ms] Subscipt f : full scale s : eductive scale
A Force Platform Free Gait Analysis
Poceedings A Foce Platfom Fee Gait Analysis Tokio Maeda 1,2, *, Tatsuo Ishizuka 3, Sakua Yamaji 4 and Yuji Ohgi 3 1 Keio Reseach Institute at SFC, 5322 Endo, Fujisawa, Kanagawa 252-0882, Japan 2 Koseki
More informationThe Study About Stopping Distance of Vehicles
Intenational Jounal of Infomation Engineeing and Applications 018; 1(1): 18- http://www.aascit.og/jounal/infomation The Study About Stopping Distance of Vehicles Zhao Chun-xue School of Mathematics and
More informationPerformance Characteristics of Parabolic Trough Solar Collector System for Hot Water Generation
Intenational Enegy Jounal: Vol. 7, No. 2, June 2006 137 Pefomance Chaacteistics of Paabolic Tough Sola Collecto System fo Hot Wate Geneation www.sed.ait.ac.th/eic A. Valan Aasu and T. Sonakuma Faculty
More informationNumerical study of super-critical carbon dioxide flow in steppedstaggered
The 6th Intenational Supecitical CO2 Powe Cycles Symposium Mach 27-29, 2018, Pittsbugh, Pennsylvania Numeical study of supe-citical cabon dioxide flow in steppedstaggeed labyinth seals Yuming Zhu a,b,
More informationCORESTA RECOMMENDED METHOD N 68
COESTA ECOMMENDED METHOD N 68 DETEMINATION OF CABON MONOXIDE IN THE MAINSTEAM SMOKE OF CIGAS BY NON-DISPESIVE INFAED ANALYSIS (Januay 2010) 1. FIELD OF APPLICATION The method is applicable to the gas phase
More informationMatlab Simulink Implementation of Switched Reluctance Motor with Direct Torque Control Technique
Matlab Simulink Implementation of Switched Reluctance Moto with Diect Toque Contol Technique Vikamaajan Jambulingam Electical and Electonics Engineeing, VIT Univesity, India. Abstact - The switched eluctance
More information10 Torque. Lab. What You Need To Know: Physics 211 Lab
b Lab 10 Toque What You Need To Know: F (a) F F Angula Systems Evey lab up to this point has dealt with objects moving in the linea system. In othe wods, objects moving in a staight line. Now we ae going
More informationEcoMobility World Festival 2013 Suwon: an analysis of changes in citizens awareness and satisfaction
IOSR Jounal Engineeing (IOSRJEN) ISSN (e): 2250-3021, ISSN (p): 2278-8719 Vol. 07, Issue 03(Mach 2017), V1 PP 40-48 www.iosjen.og EcoMobility Wold Festival 2013 Suwon: an analysis changes in citizens awaeness
More informationSTUDY OF IRREGULAR WAVE-CURRENT-MUD INTERACTION
STUDY OF IRREGULAR WAVE-CURRENT-MUD INTERACTION Mohsen Soltanpou, Fazin Samsami, Tomoya Shibayama 3 and Sho Yamao The dissipation of egula and iegula waves on a muddy bed with the existence of following
More informationRange Extension Control System for Electric Vehicles Based on Front and Rear Driving Force Distribution Considering Load Transfer
Range Extension Contol System fo Electic Vehicles Based on and Diving Foce Distibution Consideing Load Tansfe Sho Egami and Hioshi Fujimoto The Univesity of Tokyo 5--5, Kashiwanoha, Kashiwa, Chiba, 227-856
More informationA CONCEPTUAL WHEELED ROBOT FOR IN-PIPE INSPECTION Ioan Doroftei, Mihaita Horodinca, Emmanuel Mignon
A CONCEPTUAL WHEELED ROBOT FOR IN-PIPE INSPECTION Ioan Dooftei, Mihaita Hoodinca, Emmanuel Mignon Univesité Libe de Buxelles Active Stuctues Laboatoy 50, Av. F.D.Roosevelt, B-1050, Bussels, Belgium. Email:
More informationLesson 33: Horizontal & Vertical Circular Problems
Lesson 33: Hoizontal & Vetical Cicula Poblems Thee ae a wide vaiety of questions that you do if you apply you knowledge of cicula motion coectly. The tough pat is figuing out how to set them up. You need
More informationFinite Element Analysis of Active Isolation of Deep Foundation in Clayey Soil by Rectangular Trenches
Finite Element Analysis of Active Isolation of Deep Foundation in Clayey Soil by Rectangula Tenches Mehab Jesmani Assistant Pofesso, Depatment. of Civil Engineeing, Imam Khomeini Intenational Univesity,
More informationMODELLING THE INTERACTION EFFECTS OF THE HIGH-SPEED TRAIN TRACK BRIDGE SYSTEM USING ADINA
MODELLING THE INTERACTION EFFECTS OF THE HIGH-SPEED TRAIN TRACK BRIDGE SYSTEM USING ADINA ABSTRACT Constança Rigueio Depatment of Civil Engineeing, Polytechnic Institute of Castelo Banco Potugal Calos
More informationHigh Axial Load Capacity, High speed, Long life. Spherical Roller Bearings
High Axial Load Capacity, High speed, Long life Spheical Rolle eaings Spheical Rolle eaings High axial esistance load pefomance Intenal specifications have been optimized to geatly impove axial esistance
More informationCyclostrophic Balance in Surface Gravity Waves: Essay on Coriolis Effects
Jounal of Oceanogaphy, Vol. 53, pp. 311 to 315. 1997 Shot Contibution Cyclostophic Balance in Suface Gavity Waves: Essay on Coiolis Effects KERN E. KENYON 4632 Noth Lane Del Ma, CA 92014-4134, U.S.A. (Received
More informationLecture 24. Wind Lidar (6) Direct Motion Detection Lidar
Lectue 24. Wind Lida (6) Diect Motion Detection Lida Diect Motion Detection Wind Lida Lida tacking of aeosol motions Lase time-of-flight velocimety Lase Dopple velocimety Compaison of wind lida techniques
More informationTheoretical and Experimental Study of Gas Bubbles Behavior
Theoetical and Expeimental Study of Gas Bubbles Behavio Lucian Mândea, Gabiela Opina, aeș-andei Chihaia, Lucia-Andeea El-Leathey, and adu Miea Abstact The pape pesents theoetical consideations on gas bubbles
More informationPhase Behavior Introduction to Phase Behavior F.E. Londono M.S. Thesis (2001)
Natual Gas Engineeing Phase Behavio Intoduction to Phase Behavio F.E. Londono M.S. hesis (001).. Blasingame, exas &M U. Depatment of Petoleum Engineeing exas &M Univesity College Station, X 77843-3116
More informationSIMULATION OF SEISMIC BEHAVIOUR OF GRAVITY QUAY WALL USING A GENERALIZED PLASTICITY MODEL
4 th Intenational Confeence on Eathquake Geotechnical Engineeing June 25-28, 2007 Pape No. 1734 SIMULATION OF SEISMIC BEHAVIOUR OF GRAVITY QUAY WALL USING A GENERALIZED PLASTICITY MODEL Mahdi ALYAMI 1,
More informationVIBRATION INDUCED DROPLET GENERATION FROM A LIQUID LAYER FOR EVAPORATIVE COOLING IN A HEAT TRANSFER CELL. A Thesis Presented to The Academic Faculty
VIBRATION INDUCED DROPLET GENERATION FROM A LIQUID LAYER FOR EVAPORATIVE COOLING IN A HEAT TRANSFER CELL A Thesis Pesented to The Academic Faculty By Fank Pytle III. In Patial Fulfillment Of the Requiements
More informationA Deceleration Control Method of Automobile for Collision Avoidance based on Driver's Perceptual Risk
A Deceleation Contol Method of Automobile fo Collision Avoidance based on Dive's Peceptual Risk Takahio Wada, Shun ichi Doi, and Shoji Hiaoka Abstact To educe ea-end cash of automobiles, it is impotant
More informationData Sheet. Linear bearings
Data Pack G Issued Septembe 1999 1502325042 Data Sheet Linea beaings Instument ball beaings and shafts The RS ange of instument quality ball bushing beaings ae fo 1 8in, 3 16in and 1 4in shafts. Each beaing
More informationA Collision Risk-Based Ship Domain Method Approach to Model the Virtual Force Field
A Collision Risk-Based Ship Domain Method Appoach to Model the Vitual Foce Field Tengfei Wang a,b,c, Xinping Yan a,b *, Yang Wang a,b, and Qing Wu a,b,c a Intelligent Tanspotation System Reseach Cente,
More informationDesign Engineering Challenge: The Big Dig Contest Platter Strategies: Ball Liberation
Poblem Set 4: Unifom Cicula Motion Design Engineeing Challenge: The Big Dig.007 Contest Platte Stategies: Ball Libeation Oeall Notes: You ae not equied to pefom the actual analysis in this poblem set,
More informationRotor Design and Analysis of Stall-regulated Horizontal Axis Wind Turbine
Roto Design and Analysis of Stall-egulated Hoizontal Axis Wind Tubine Xinzi Tang Univesity of Cental Lancashie, Peston, UK XTang4@uclan.ac.uk Xiongwei Liu Univesity of Cental Lancashie, Peston, UK XLiu9@uclan.ac.uk
More informationBubble clustering and trapping in large vortices. Part 1: Triggered bubbly jets investigated by phase-averaging
Intenational Jounal of Multiphase Flow 33 (2007) 1088 1110 www.elsevie.com/locate/ijmulflow Bubble clusteing and tapping in lage votices. Pat 1: Tiggeed bubbly jets investigated by phase-aveaging Rade
More informationOPTIMAL SCHEDULING MODELS FOR FERRY COMPANIES UNDER ALLIANCES
Jounal of Maine Science and Technology, Vol. 15, No. 1, pp. 53-66 (2007) 53 OPTIMAL SCHEDULING MODELS FOR FERRY COMPANIES UNDER ALLIANCES Shangyao Yan*, Chia-Hung Chen**, Hsin-Yen Chen*** and Tze-Chiang
More informationBritish Prime Minister Benjamin Disraeli once remarked that
GABREL COSTA, MCHAEL HUBER, & OHN SACCOMAN Cumulative Home Run Fequency and the Recent Home Run Explosion Bitish Pime Ministe Benjamin Disaeli once emaked that thee ae thee kinds of falsehoods: lies, damned
More informationElectrical Equipment of Machine Tools
Electical Equipment of achine Tools Electification in machine tools today is vey extensive because it helps to simplify thei constuction, educe thei weight, and develop automatic contol. any advanced tends
More informationA Study on Brushless DC Motor for High Torque Density
Intenational Jounal of Mechanical and Mechatonics Enineein A Study on Bushless DC Moto fo Hih Toque Density Jun-Moo Seo, Jun-Hwan Kim, Se-Hyun Rhyu, Jun-Hyuk Choi, and In-Soun Jun, Senio Membe, IEEE Abstact
More informationLOADS OF SEWER MANHOLES WITHIN MINING AREA
Jounal of Sustainable Mining e-issn 23-396 p-issn 23-364 JOURNAL HOMEPAGE jsm.gig.eu The online vesion of the Jounal of Sustainable Mining is the pimay, efeence vesion of the jounal Zięba M. (24). Loads
More informationABriefIntroductiontotheBasicsof Game Theory
ABiefIntoductiontotheBasicsof Game Theoy Roy Smead Notheasten Univesity Septembe 18, 2013 Game theoy is a set of mathematical tools that ae used to epesent and study social inteactions. This is a vey bief
More informationExperiment #10 Bio-Physics Pre-lab Comments, Thoughts and Suggestions
Expeient #10 Bio-Physics Pe-lab Coents, Thoughts and Suggestions The pupose of this pape is to povide you with soe infoation which ay be useful fo solving the pe-lab questions and pefoing the lab. I will
More informationAn Auction Based Mechanism for On-Demand Transport Services
An Auction Based Mechanism fo On-Demand Tanspot Sevices Malcolm Egan, Ni Oen and Michal Jakob Abstact Recently, a new class of tanspot sevices, exemplified by Ube and Lyft has emeged. Such sevices use
More informationWind and extremely long bridges a challenge for computer aided design
Wind and extemely long bidges a challenge fo compute aided design oian JANJIC anaging iecto TV / entley Systems Gaz, Austia oian Janjic, bon 960, civil engineeing degee fom the Faculty of Civil Engineeing,
More informationf i r e - p a r t s. c o m
A M E R I C A N F L A M E A F AF-1000 Seies Manual Gas Contol Valve APPLICATION The AF-1000 Manual Gas Contol Valve is designed fo use in gas in heath poducts, wall mount funaces, and space heating appliances.
More informationMultiple Vehicle Driving Control for Traffic Flow Efficiency
Multiple Vehicle Diving Contol fo Taffic Flow Efficiency Seong-Woo Kim, Gi-Poong Gwon, Seung-Tak Choi, Seung-am Kang, Myoung-Ok Shin, In-Sub oo, Eun-Dong Lee, and Seung-Woo Seo Abstact The dynamics of
More informationEC-FRM: An Erasure Coding Framework to Speed up Reads for Erasure Coded Cloud Storage Systems
215 44th Intenational Confeence on Paallel Pocessing EC-FRM: An Easue Coding Famewok to Speed up Reads fo Easue Coded Cloud Stoage Systems Yingxun Fu, Jiwu Shu *, and Zhiong Shen Tsinghua National Laboatoy
More informationPREDICTION OF ELECTRICAL PRODUCTION FROM WIND ENERGY IN THE MOROCCAN SOUTH
OL., NO., FEBRUARY 7 ISSN 89-668 REDICTION OF ELECTRICAL RODUCTION FROM WIND ENERGY IN THE MOROCCAN SOUTH Elyaqouti Mustapha, Ezzaidi Asma, Bouhouch Lahoussine and Ihlal Ahmed ERTAIER, ESTA, Univesity
More informationDYNAMICS OF WATER WAVES OVER FRINGING CORAL REEFS
DYNAMICS OF WATER WAVES OVER FRINGING CORAL REEFS DYNAMICS OF WATER WAVES OVER FRINGING CORAL REEFS YAO YU 1 YAO YU SCHOOL OF CIVIL AND ENVIRONMENTAL ENGINEERING 1 Dynamics of Wate Waves ove Finging Coal
More informationColor Encodings: srgb and Beyond
IS&T's 2002 PICS Confeence Colo Encodings: srgb and Beyond Kevin E. Spaulding Eastman Kodak Company, Rocheste, New Yok Jack Holm Hewlett-Packad Company, Palo Alto, Califonia Abstact Most digital imaging
More informationExperiment #10 Bio-Physics Pre-lab Questions
Expeient #10 Bio-Physics Pe-lab Questions ** Disclaie: This pe-lab is not to be copied, in whole o in pat, unless a pope efeence is ade as to the souce. (It is stongly ecoended that you use this docuent
More informationA Three-Axis Magnetic Sensor Array System for Permanent Magnet Tracking*
16 IEEE Intenational Confeence on Multisenso Fusion and Integation fo Intelligent Systems (MFI 16) Kongesshaus Baden-Baden, Gemany, Sep. 19-1, 16 A Thee-Axis Magnetic Senso Aay System fo Pemanent Magnet
More informationOUTDOOR FOOTBALL FIELD
www integalspo com USING AREAS: Mini football fields, pivate buildings, pivate schools and pivate entepeunes. SYSTEM DESCRIPTION: Composite steel constuction with synthetic tuf floo, oof and sides coveed
More informationDriver Model Based on Mechanical Traveling Wave Principle
Ameican Jounal of Mechanical Engineeing, 014, Vol., No. 6, 159-163 Available online at http://pubs.sciepub.com/ajme//6/ Science and Education Publishing DOI:10.1691/ajme--6- Dive Model Based on Mechanical
More informationMulti-Robot Flooding Algorithm for the Exploration of Unknown Indoor Environments
2010 IEEE Intenational Confeence on Robotics and Automation Anchoage Convention Distict May 3-8, 2010, Anchoage, Alaska, USA Multi-Robot Flooding Algoithm fo the Exploation of Unknown Indoo Envionments
More informationTHE IMPACTS OF CONGESTION ON COMMERCIAL VEHICLE TOUR CHARACTERISTICS AND COSTS
Figliozzi 1 THE IMPACTS OF CONGESTION ON COMMERCIAL VEHICLE TOUR CHARACTERISTICS AND COSTS Miguel Andes Figliozzi Depatment of Civil and Envionmental Engineeing Maseeh College of Engineeing and Compute
More informationMulti-Robot Forest Coverage
Multi-Robot Foest Coveage Xiaoming Zheng Sonal Jain Sven Koenig David Kempe Depatment of Compute Science Univesity of Southen Califonia Los Angeles, CA 90089-0781, USA {xiaominz, sonaljai, skoenig, dkempe}@usc.edu
More informationDECO THEORY - BUBBLE MODELS
DECO THEORY - BUBBLE MODELS This page descibes pinciples and theoies about bubble geneation and bubble gowth in the scuba dives body and about the effect of bubble fomation on decompession and decompession
More informationI. FORMULATION. Here, p i is the pressure in the bubble, assumed spatially uniform,
The natual fequency of oscillation of gas bubbles in tubes H. N. Og uz and A. Pospeetti Depatment of Mechanical Engineeing, The Johns Hopkins Univesity, Baltimoe, Mayland 21218 Received 28 July 1997; accepted
More informationTrends in Cycling, Walking & Injury Rates in New Zealand
Tends in Cycling, Walking & Injuy Rates in New Zealand Walking and cycling, minutes/week SUMMAR Estimates of walking and cycling fom 9 Household Tavel suveys in New Zealand, conducted etween 1989 and 2012,
More informationAsteroid body-fixed hovering using nonideal solar sails
Reseach in Aston. Astophys. 4 Vol. X No. XX, http://www.aa-jounal.og http://www.iop.og/jounals/aa Reseach in Astonomy and Astophysics Asteoid body-fixed hoveing using nonideal sola sails Xiang-yuan Zeng,
More informationSome physical and mechanical properties of date palm trees related to cultural operations industry mechanization
Jounal of Agicultual Technology 2009, V.5(1): 17-31 Some physical and mechanical popeties of date palm tees elated to cultual opeations industy mechanization M. Shamsi and S.M. Mazloumzadeh Depatment of
More informationNoncrossing Trees and Noncrossing Graphs
Noncossing Tees and Noncossing Gaphs William Y. C. Chen and Shey H. F. Yan Cente fo Combinatoics, LPMC, Nanai Univesity, 300071 Tianjin, P.R. China chen@nanai.edu.cn, huifangyan@eyou.com Submitted: Sep
More informationMorrison Drive tel. Ottawa, ON, Canada K2H 8S fax. com
acomaecom 302 1150 Moison Dive 613 820 8282 tel Ottawa, ON, Canada K2H 8S9 613 820 8338 fax www.aecom. com To Pat Seguin, P. Eng. Manage of Engineeing Page 1 CC Subject Valeie McGi, Ted Achuticz Pine Steet
More informationCarnegie Mellon University Forbes Ave., Pittsburgh, PA command as a point on the road and pans the camera in
Panacea: An Active Senso Contolle fo the ALVINN Autonomous Diving System Rahul Sukthanka, Dean Pomeleau and Chales Thope Robotics Institute Canegie Mellon Univesity 5 Fobes Ave., Pittsbugh, PA 15213-3891
More informationRearranging trees for robust consensus
Poceedings of the IEEE Conf. on Decision and Contol, Olando, FL, 011 Reaanging tees fo obust consensus Geoge Foest Young, Luca Scadovi and Naomi Ehich Leonad Abstact In this pape, we use the H nom associated
More informationFire-Safety Analysis Timber. FRILO Software GmbH As of 29/06/2016
Fie-Safety nalysis Timbe FRILO Softwae GmbH www.filo.com info@filo.com s of 29/06/2016 Fie-Safety nalysis Timbe Fie-Safety nalysis Timbe This documentation efes to the fie safety veifications used in
More informationToward a Virtual Neuromuscular Control for Robust Walking in Bipedal Robots
Towad a Vitual Neuomuscula Contol fo Robust Walking in Bipedal Robots Zachay Batts, Seungmoon Song, and Hatmut Geye Abstact Walking contolles fo bipedal obots have not yet eached human levels of obustness
More informationA Machine Vision based Gestural Interface for People with Upper Extremity Physical Impairments
IEEE TRANSACTIONS ON SYSTEMS, MAN, AND CYBERNETICS-PART A: SYSTEMS AND HUMANS 1 A Machine Vision based Gestual Inteface fo People with Uppe Extemity Physical Impaiments Haiong Jiang, Badley S. Duestock,
More informationDETC A NEW MODEL FOR WIND FARM LAYOUT OPTIMIZATION WITH LANDOWNER DECISIONS
Poceedings of the ASME Intenational Design Engineeing Technical Confeences& Computes and Infomation in Engineeing Confeence IDETC/CIE August 8-3,, Washington, DC, USA DETC-4777 A NEW MODEL FOR WIND FARM
More informationA Scroll Compressor with a High Performance Induction Motor Drive for the Air Management of a PEMFC System for Automotive Applications
A Scoll Compesso with a High Pefomance Induction Moto Dive fo the Ai Management of a PEMFC System fo Automotive Applications Benjamin Blunie Student Membe, IEEE, Macello Pucci Membe, IEEE, Giansalvo Ciincione
More informationStudy on short-term energy storage characteristics of accumulators of hydrostatic wind turbine system
Available online www.joc.com Jounal of Chemical and Phamaceutical Reseach, 04, 6(7):500-507 Reseach Aticle ISSN : 0975-7384 CODEN(USA) : JCPRC5 Study on shot-tem enegy stoage chaacteistics of accumulatos
More informationIncorporating Location, Routing and Inventory Decisions in Dual Sales Channel - A Hybrid Genetic Approach
Incopoating Location, Routing and Inventoy Decisions in Dual Sales Channel - A Hybid Genetic Appoach Chia-lin Hsieh 1, Shu-hsien Liao 2, Wei-chung Ho 2 1 Depatment of Statistics and Actuaial Science, Aletheia
More informationPREDICTION OF THIRD PARTY DAMAGE FAILURE FREQUENCY FOR PIPELINES TRANSPORTING MIXTURES OF NATURAL GAS AND HYDROGEN Zhang, L. 1, Adey, R.A.
PREDICTION OF THIRD PARTY DAMAGE FAILURE FREQUENCY FOR PIPELINES TRANSPORTING MIXTURES OF NATURAL GAS AND HYDROGEN Zhang, L., Adey, R.A. 2 C M BEASY Ltd, Ashust Lodge, Southampton, SO4 7AA, UK, Lzhang@beasy.com
More informationA Physical Prototype of an Automotive Magnetorheological Differential
oceedings of the Wold Congess on Engineeing 013 ol III, WCE 013, July 3-5, 013, London, U.K. hysical ototype of an utomotive agnetoheological Diffeential. Lanzotti, F. Renno,. Russo, R. Russo,. ezo bstact
More informationCavitation Bubble Dynamics in Non-Newtonian Fluids
Cavitation Bubble Dynamics in Non-Newtonian Fluids Emil-Alexandu Bujan Depatment of Hydaulics, Univesity Politehnica Buchaest, 060042 Buchaest, omania Cavitation phenomena play impotant oles in many aeas
More informationProviding solutions for your most demanding applications
Aeoquip Hose Assembly Maste Catalog Poviding solutions fo you most demanding applications Teflon hose Eveflex smooth boe S-Seies... -3 SC-Seies.... -4 S-TW Seies.... -5 SC-TW Seies.... -6 HI-PSI Seies...
More informationAlternate stable states in coupled fishery-aquaculture systems. Melissa Orobko
Altenate stable states in coupled fishey-aquacultue systems by Melissa Oobko A thesis submitted in confomity with the equiements fo the degee of Maste of Science Depatment of Ecology & Evolutionay Biology
More informationSHRiMP: Accurate Mapping of Short Color-space Reads
SHRiMP: Accuate Mapping of Shot Colo-space Reads Stephen M. Rumble 1,2, Phil Lacoute 3,4, Adian V. Dalca 1, Mac Fiume 1, Aend Sidow 3,4, Michael Budno 1,5 * 1 Depatment of Compute Science, Univesity of
More informationAbebe Eshetu Degati 1, Assistance Professor Harish Kumar 2 1(PhD student, sport science department, Punjabi university, Patiala, Punjab (India)
IOSR Jounal of Spots and Physical Education (IOSR-JSPE) e-issn: 2347-6737, p-issn: 2347-6745, Volume 4, Issue 1, (Jan. Feb. 2017), PP 06-10 www.iosjounals.og The Relationship between Selected Physical
More informationAalborg Universitet. Published in: Proceedings of the Fourth CA-OE Workshop. Publication date: 2006
Aalbog Univesitet 3 Yeas Expeience with Enegy Pouction on the Nissum Bening Wave Dagon Pototype Figaa, Pete Bak; Te, James William; Kofoe, Jens Pete; Fiis-Masen, E. Publishe in: Poceeings of the Fouth
More informationAn integrated supply chain design model with random disruptions consideration
Afican Jounal of Business Management Vol. 4(1), pp. 393-401, 18 Septembe, 010 Available online at http://www.academicounals.og/ajbm ISSN 1993-833 010 Academic Jounals Full Length Reseach Pape An integated
More informationPOSSIBLE AND REAL POWERFLOWS IN CONNECTED DIFFERENTIAL GEAR DRIVES WITH η 0 <i pq <1/η 0 INNER RATIO
5th INTERNATIONAL MEETING OF TE CARPATIAN REGION SPECIALISTS IN TE FIEL OF GEARS POSSIBLE AN REAL POWERFLOWS IN CONNECTE IFFERENTIAL GEAR RIVES WIT η 0
More informationCheat-Proof Playout for Centralized and Distributed Online Games
Cheat-Poof Playout fo Centalized and Distibuted Online Games Nathaniel E. Baughman Bian Neil Levine baughman@cs.umass.edu bian@cs.umass.edu Depatment of Compute Science Univesity of Massachusetts Amhest,
More informationProject Proposal: Characterization of Tree Crown Attributes with High Resolution Fixed-Base Aerial Photography. by Rich Grotefendt and Rob Harrison
Poject Poposal: Chaacteization of Tee Cown Attibutes with High Resolution Fixed-Base Aeial Photogaphy by Rich Gotefendt and Rob Haison Funding Acknowledgments of Past Wok Pesented Alaska Depatment of Natual
More informationFALL PROTECTION PROGRAM
FALL PROTECTION PROGRAM 13255 South St. Ceitos, CA 90703 Telephone 562-924-3364 Fax 562-924-0521 Table of Contents Fall Potection... 3 Fall Potection Is Requied... 3 Fall Potection Types... 3 Standad Guadails,
More informationUNIVERSITÀ DEGLI STUDI DI PADOVA. Dipartimento di Scienze Economiche Marco Fanno
UNIVERSITÀ DEGLI STUDI DI PADOVA Dipatimento di Scienze Economiche Maco Fanno DUAL LICENSING IN OPEN SOURCE SOFTWARE MARKETS STEFANO COMINO Univesity of Udine FABIO M. MANENTI Univesity of Padova Januay
More informationTechnical Feasibility Study of Energy Generation from the Tide in Southern Coasts of Iran Using Helical Turbines
J. Al. Envion. Biol. Sci., 5(1)39-48, 2015 2015, TextRoad Publication ISSN: 2090-4274 Jounal of Alied Envionental and Biological Sciences www.textoad.co Technical Feasibility Study of Enegy Geneation fo
More informationThe Solution to the Bühlmann - Straub Model in the case of a Homogeneous Credibility Estimators
5 Economy Infomatics, -4/005 The Solution to the Bühlmann - Staub Model in the case of a Homogeneous Cedibility Estimatos Lect. Viginia ATANASIU Mathematics Depatment, Academy of Economic Studies Oiginal
More informationLecture Topics. Overview ECE 486/586. Computer Architecture. Lecture # 9. Processor Organization. Basic Processor Hardware Pipelining
EE 486/586 ompute chitectue Lectue # 9 asic Pocesso Hadwae Pipelining Refeence: ppendix : Section.1 Lectue Topics Sping 2015 Potland State Univesity Oveview Pocesso Oganization typical computing task consists
More informationELECTRICAL INSTALLATION CERTIFICATE [BS 7671:2008 as amended] Details of of the the Installation. For Design. For Construction
ELECTRICL INSTLLTION CERTIFICTE [BS 7671:008 as amended] Details of of the the Client Clien Client/ Details of of the the Installation : Extent of the stallation coveed by this cetificate The stallation
More informationA Method of Hand Contour Tracking based on GVF, Corner and Optical flow Ke Du1, a, Ying Shi1,b, Jie Chen2,c, MingJun Sun1, Jie Chen1, ShuHai Quan1
2nd Intenational Confeence on Machiney, Mateials Engineeing, Chemical Engineeing and Biotechnology (MMECEB 2015) A Method of Hand Contou Tacking based on GVF, Cone and Optical flow Ke Du1, a, Ying Shi1,b,
More informationThree-axis Attitude Control with Two Reaction Wheels and Magnetic Torquer Bars
Thee-axis Attitude Contol with Two Reaction Wheels and Magnetic Toque Bas Byce A. Robets *, Jeffey W. Kuk, Thomas B. Ake, Tom S. Engla Johns Hopkins Univesity, Baltimoe, MD 2121, USA and Bian F. Class
More information0ur Ref:CL/Mech/ Cal /BID-01(11-12) Date: 29 July 2011
0u Ref:CL/Mech/ Cal /BID-01(11-12) Date: 29 July 2011 SUBJECT: PROCUREMENT OF CALIBRATION SERVICES FOR THE EQUIPMENTS IN Cental Laboatoy (Mechanical) Dea Sis, Technical & Commecial s ae invited fo the
More information55CM ROUND CHARCOAL KETTLE BBQ
IMPORTANT - Please ead the instuctions caefully befoe assembling 55CM ROUND CHARCOAL KETTLE BBQ Assembly A Instuctions PLEASE RETAIN THE INSTRUCTIONS FOR FUTURE USE. Safety and Cae Advice the Wait fo it
More informationAccel. (m/s 2 ) Time (sec) Newton s 3 rd Law and Circular Motion. Group Problem 04
1) A 200 kg tuck acceleates eastwads on a hoizontal oad in esponse to a gadually inceasing fictional foce fom the gound. Thee is an unsecued 50 kg block sitting on the tuck bed line. Thee is fiction between
More informationTarget Allocation Study for Formation Ship-ToAir Missile System Based on the Missile Fire. Zone Division
Taget Aocation Study fo Fomation Ship-ToAi Missie System Based on the Missie Fie Zone Division Jihua Dou and Shouquan Dong 667#, Jiefang Road, Zhongshan Distict, Daian City, China Emai: doujihua@6com Abstact
More informationUse of the swim bladder and lateral line in near-field sound source localization by fish
2014. Published by The Company of Biologists Ltd (2014) 217, 2078-2088 doi:10.1242/jeb.093831 RESEARCH ARTICLE Use of the swim bladde and lateal line in nea-field sound souce localization by fish Allison
More informationFaster Nearest Neighbors: Voronoi Diagrams and k-d Trees
154 25 Jonathan Richad Shewchuk Faste Neaest Neighbos: Voonoi Diagams and k-d Tees SPEEDING UP NEAREST NEIGHBOR CLASSIFIERS Can we pepocess taining pts to obtain sublinea quey time? 2 5 dimensions: Voonoi
More informationSession 6. Global Imbalances. Growth. Macroeconomics in the Global Economy. Saving and Investment: The World Economy
Session 6. Global Imbalances. Gowth. v, and the Real Inteest Rate v Global Imbalances v Gowth v Intoduction to exchange ates and : The Wold Economy The eal inteest ate is the pice that equilibates saving
More informationFault tolerant oxygen control of a diesel engine air system
Fault toleant oxygen contol of a diesel engine ai system Raine Nitsche, Matthias Bitze, Mahmoud El Khaldi, Géad Bloch To cite this vesion: Raine Nitsche, Matthias Bitze, Mahmoud El Khaldi, Géad Bloch.
More informationOperating Instructions Compressors
MAXIMATOR HIGH PRESSURE TECHNOLOGY HYDRAULICS PNEUMATICS TESTING EQUIPMENT Opeating Instuctions Compessos issue 08.2007 MAXIMATOR GmbH Walkeniede Staße 15 D-37449 Zoge Gemany Telefon 0 55 86 / 803-0 Telefax
More informationTLV493D-A1B6 3D Magnetic Sensor
Low Powe with I 2 C Inteface Use Manual Aout this document Scope and pupose This document povides poduct infomation and desciptions egading: Functional desciption Calculation of the magnetic flux and tempeatues
More informationTorque. Physics 2. Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB
Toque Physics Toque Toque is what causes angula acceleation (just like a foce causes linea acceleation) Toque Toque is what causes angula acceleation (just like a foce causes linea acceleation) Fo a toque
More informationDesign and Simulation Model for Compensated and Optimized T-junctions in Microstrip Line
Intenational Jounal of Advanced Reseach in Compute Engineeing & Technology (IJARCET) Volume 3 Issue, Decembe 4 Design and Simulation Model fo Compensated and Optimized T-junctions in Micostip Line Alok
More informationTracking of High-speed, Non-smooth and Microscale-amplitude Wave Trajectories
Tacking of High-spee, Non-smooth an Micoscale-amplitue Wave Tajectoies Jiaech Kongthon Depatment of Mechatonics Engineeing, Assumption Univesity, Suvanabhumi Campus, Samuthpakan, Thailan Keywos: Abstact:
More informationFIRE RESEARCH STATION
Fie Reseach No.717 Note SLURRES OF SOLD CARBON DOXDE AS EXTNGUSHNG AGENTS by D. J. RASBASH, P. F. THORNE AND W. D. WOOLLEY June 1968. J FRE RESEARCH STATON BRE Tust (UK) Pemission is ganted fo pesonal
More informationThe Properties of. Model Rocket Body Tube Transitions
The Popeties of Moel ocket Boy Tube Tansitions Date: Septembe 6, 000 Pepae By: J.. Bohm NA 7808 CA S680 ev: (June, 005) .0 Intouction When esigning moel ockets, esignes often choose to incopoate iffeent
More information