Optimization of Ejector's Performance With a CFD Analysis. Amanda Mattos Karolline Ropelato Ricardo Medronho
|
|
- Eunice Barker
- 6 years ago
- Views:
Transcription
1 Optimization of Ejector's Performance With a CFD Analysis Amanda Mattos Karolline Ropelato Ricardo Medronho
2 2 Introduction Ejectors Equipment industrially used and based on the Venturi phenomena; With a high pressure motive fluid and converging/diverging ducts it promotes the drag of a secondary fluid, usually causing vaccum on the side entrance Diffuser Mixture Chamber Secondary Fluid Primary Nozzle Primary Fluid Throat Suction Chamber
3 Entrainment Ratio 3 Basic Operational Principles Typical Performance Ejector s Efficiency Evalutation Choked flow Entrainment Ratio (RM) Unchoked flow Reversed flow Compression Ratio (CR) Expansion Ratio (ER) Choked flow Breakdown Pressure Discharge Pressure Critical Pressure Reversed Flow RM = secondary fluid mass flow primary fluid mass flow CR = mixture outlet pressure secondary fluid inlet pressure ER = primary fluid inlet pressure secondary fluid inlet pressure
4 4 Bibliographic Research Study of Sriveerakul et al. (2007a) Objective: validate a representative model through experimental data Model characteristics: Bidimensional domain with axyssimetric Pressure aproximation experimental data Ideal gas relation for working fluid (saturated water vapour) Turbulence model realizable k-ε Pressure boundary conditions were adopted for both entrances and outlet, according to experimental procedure Observations: Calculated pressure profile presents the same pattern observed in experimental data Similarities on the ejector s experimental behavior, regarding its performance under different geometries were observed by computational model
5 5 Computational Model CFD Objective: validate a representative model Geometry Bidimensional domain Axyssimetric aproximation Axyssimetric
6 6 Computational Model CFD Objective: validate a representative model Geometry Bidimensional domain Axyssimetric aproximation Working Fluid Saturated water vapour Ideal gas relation for compressibility No phase change Boundary Conditions Model Details Solver density-based Implicit formulation Axyssimetric Fluido Primário Primary Fluid Discharge Saída Secondary Fluido Secundário
7 7 Computational Model Optimization Objective: maximize equipment s efficiency Geometric variation and entrainment ratio analysis Geometric/Operation condition variations and entrainment/ compression ratios analysis Model Details Design of Experiments (Central Composite Designs) Optimization Algorithm (NSGA-II) Secondary Fluid Secondary Fluid Parameter 1 Primary Nozzle Diameter Mixture Chamber Diameter Throat Length Primary Nozzle Diameter Mixture Chamber Diameter 3 Range 6-8 [mm] [mm] Throat Length Secondary Fluid Temperature D CM - 6 D CM [K]
8 Pressão [mbar] Velocidade [m/s] 8 Mesh Independency Test Objective: identify variations on pressure and velocity profiles under different levels of mesh refinement Hexaedrical mesh chosen Velocity [m/s] Pressure [mbar] Pressure Profile on center line (a) Perfil de pressão na linha central (b) Perfil de velocidade na linha central Velocity Profile on center line X [mm] Mesh 110 Mesh 40 Mesh 13 Mesh 8
9 Velocidade [m/s] Pressão [mbar] CFD model validation 1 2 Pressure Velocity 3 4 Primary Fluid Secondary Fluid Mixture Sonic Velocity Velocity [m/s] Pressure [mbar] First series of oblique shocks X [mm] X [mm] Second series of oblique shocks
10 Pressure [mbar] Pressão [mbar] 10 CFD model valitation Pressure profile analysis X [mm] X [mm]
11 Pressure [mbar] Pressão [mbar] 11 CFD model valitation Pressure profile analysis Entrainment ratio analysis Operation Calculated Experimental Condition Entrainment Ratio Entrainment Ratio Error A 0,54 0,53-1,88% B 0,39 0,40 1,46% C 0,26 0,31 15,27% X [mm] X [mm]
12 12 CFD model valitation Pressure profile analysis Entrainment ratio analysis Calculated profiles Supersonic flow on diverging duct Velocity [m/s] Absolute Pressure [mbar] A p v T ρ c м м> 1 Oblique shock wave formation Density [kg/m 3 ] Lower Pressures Pressões diminuindo Temperature [K] Onda de choque oblíqua Oblique shock wave
13 13 CFD model valitation Mach Number Operation condition variation Decreasing primary fluid pressure Lowers primary fluid momentum Restricts the expansion angle Larger effective area Major secondary fluid drag Decreasing secondary fluid pressure Larger expansion angle Minor effective area Less drag of secondary fluid Lower primary fluid pressure Lower secondary fluid pressure Standard Operation Condition Operation Calculated Experimental Condition Entrainment Ratio Entrainment Ratio Error A 0,54 0,53-1,88% B 0,39 0,40 1,46% C 0,26 0,31 15,27%
14 Entrainment Ratio 14 Geometry Optimization Total of 150 cases Initial population with 15 cases Negative entrainment ratio Observed in designs of experiment Design of Experiments Optimal Point Simulations Velocity [m/s]
15 Entrainment Ratio 15 Resultados Geometry Optimization Total of 150 cases Initial population with 15 cases Negative entrainment ratio Observed in designs of experiment Comparison between original and optimal cases 25% efficiency increase Simulations Optimal Point Case D BP [mm] D CM [mm] C G [mm] Entrainment Ratio Original 8,00 24,00 5,00* D CM 0,5400 Optimal 7,14 26,17 4,51* D CM 0,6754 Mach Number 25% efficiency increase
16 Entrainment Ratio Compression Ratio 16 Geometry and Operation Condition Optimization Total of 250 cases Initial population with 25 cases Conflicting objective functions Paretor Frontier Various cases with reversed flow Operation condition effect Sensibility analysis Effect over entrainment ratio 10 to 20% for geometry 40% to operation condition Effect over compression ratio -10 to -20% for geometry -100% for operation condition Optimal Point Simulations Optimal Point
17 Entrainment Ratio 17 Geometry and Operation Condition Optimization Total of 250 cases Initial population with 25 cases Conflicting objective functions Paretor Frontier Various cases with reversed flow Operation condition effect Sensibility analysis Effect over entrainment ratio 10 to 20% for geometry 40% to operation condition Effect over compression ratio -10 to -20% for geometry -100% for operation condition Optimal Curve Compression Ratio
18 Effect Size Effect Size 18 Geometry and Operation Condition Optimization Total of 250 cases Initial population with 25 cases Conflicting objective functions Paretor Frontier Various cases with reversed flow Operation condition effect Sensibility analysis Effect over entrainment ratio 10 to 20% for geometry 40% to operation condition Effect over compression ratio -10 to -20% for geometry -100% for operation condition Parameter Primary Nozzle Diameter Throat Length Entrainment Ratio Significance for RM Compression Ratio Significance for Primary Nozzle Diameter 0,0035 0,1955 Mixture Chamber Diameter 0,0374 0,4034 Throat Length 0,0362 0,2018 Secondary Fluid Temperature 0,0000 0,0000 CR High values of significance Mixture Chamber Diameter Secondary Fluid Temperature
19 19 Conclusions The CFD technique has proved to be useful in understanding the phenomena that occur inside the ejector, allowing the visualization of profiles calculated inside the ejector The mesh independency test allowed the better usage of computational resources The optimization process allowed the equipment behavior prediction against variations in geometry or operating condition Geometry s optimization featured a 25% increase in the entrainment rate on the original ejector Parameters such as length throat and mixing chamber diameter can influence the entrainment rate when varied simultaneously The operating condition adopted strongly influences the efficiency of the equipment The efficiency rates analyzed have a conflicting relationship which can be characterized by the Pareto Frontier creation
Investigation on Divergent Exit Curvature Effect on Nozzle Pressure Ratio of Supersonic Convergent Divergent Nozzle
RESEARCH ARTICLE OPEN ACCESS Investigation on Divergent Exit Curvature Effect on Nozzle Pressure Ratio of Supersonic Convergent Divergent Nozzle Shyamshankar.M.B*, Sankar.V** *(Department of Aeronautical
More informationLab # 03: Visualization of Shock Waves by using Schlieren Technique
AerE545 Lab # 03: Visualization of Shock Waves by using Schlieren Technique Objectives: 1. To get hands-on experiences about Schlieren technique for flow visualization. 2. To learn how to do the optics
More informationThe Usage of Propeller Tunnels For Higher Efficiency and Lower Vibration. M. Burak Şamşul
The Usage of Propeller Tunnels For Higher Efficiency and Lower Vibration M. Burak Şamşul ITU AYOC 2014 - Milper Pervane Teknolojileri Company Profile MILPER is established in 2011 as a Research and Development
More informationInjector Dynamics Assumptions and their Impact on Predicting Cavitation and Performance
Injector Dynamics Assumptions and their Impact on Predicting Cavitation and Performance Frank Husmeier, Cummins Fuel Systems Presented by Laz Foley, ANSYS Outline Overview Computational Domain and Boundary
More informationTHEORETICAL EVALUATION OF FLOW THROUGH CENTRIFUGAL COMPRESSOR STAGE
THEORETICAL EVALUATION OF FLOW THROUGH CENTRIFUGAL COMPRESSOR STAGE S.Ramamurthy 1, R.Rajendran 1, R. S. Dileep Kumar 2 1 Scientist, Propulsion Division, National Aerospace Laboratories, Bangalore-560017,ramamurthy_srm@yahoo.com
More informationANALYSIS OF AERODYNAMIC CHARACTERISTICS OF A SUPERCRITICAL AIRFOIL FOR LOW SPEED AIRCRAFT
ANALYSIS OF AERODYNAMIC CHARACTERISTICS OF A SUPERCRITICAL AIRFOIL FOR LOW SPEED AIRCRAFT P.Sethunathan 1, M.Niventhran 2, V.Siva 2, R.Sadhan Kumar 2 1 Asst.Professor, Department of Aeronautical Engineering,
More informationApplied Fluid Mechanics
Applied Fluid Mechanics 1. The Nature of Fluid and the Study of Fluid Mechanics 2. Viscosity of Fluid 3. Pressure Measurement 4. Forces Due to Static Fluid 5. Buoyancy and Stability 6. Flow of Fluid and
More informationProceedings of the ASME th Biennial Conference on Engineering Systems Design and Analysis ESDA2014 June 25-27, 2014, Copenhagen, Denmark
Proceedings of the ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis ESDA2014 June 25-27, 2014, Copenhagen, Denmark ESDA2014-20042 UNSTEADY FLOW SIMULATION IN SUCTION MUFFLER
More informationOPTIMIZATION OF SINGLE STAGE AXIAL FLOW COMPRESSOR FOR DIFFERENT ROTATIONAL SPEED USING CFD
http:// OPTIMIZATION OF SINGLE STAGE AXIAL FLOW COMPRESSOR FOR DIFFERENT ROTATIONAL SPEED USING CFD Anand Kumar S malipatil 1, Anantharaja M.H 2 1,2 Department of Thermal Power Engineering, VTU-RO Gulbarga,
More informationSIMULATION OF ENVIRONMENTAL FLIGHT CONDITIONS
SIMULATION OF ENVIRONMENTAL FLIGHT CONDITIONS BY ADVANCED ALTITUDE SIMULATION Klaus SCHÄFER Institute of Space Propulsion, German Aerospace Centre (DLR) Lampoldshausen, 74239 Hardthausen, Germany klaus.schaefer@dlr.de
More informationCFD SIMULATIONS OF GAS DISPERSION IN VENTILATED ROOMS
CFD SIMULATIONS OF GAS DISPERSION IN VENTILATED ROOMS T. Gélain, C. Prévost Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Saclay, France Abstract In order to better understand the risks due
More informationAn Impeller Blade Analysis of Centrifugal Gas Compressor Using CFD
An Impeller Blade Analysis of Centrifugal Gas Compressor Using CFD Vivek V. Kulkarni Department of Mechanical Engineering KLS Gogte Institute of Technology, Belagavi, Karnataka Dr. Anil T.R. Department
More informationCFD Analysis ofwind Turbine Airfoil at Various Angles of Attack
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-issn: 2278-1684,p-ISSN: 2320-334X, Volume 13, Issue 4 Ver. II (Jul. - Aug. 2016), PP 18-24 www.iosrjournals.org CFD Analysis ofwind Turbine
More informationInlet Swirl on Turbocharger Compressor Performance
Inlet Swirl on Turbocharger Compressor Performance Lei Huang, Ying Liu, Hua Chen* National laboratory of Engine Turbocharging Technology, Tianjin, China *corresponding author: Tel.:+86-22-5870-7069; fax:
More informationNumerical simulation of radial compressor stages with seals and technological holes
EPJ Web of Conferences 67, 02115 (2014) DOI: 10.1051/ epjconf/ 20146702115 C Owned by the authors, published by EDP Sciences, 2014 Numerical simulation of radial compressor stages with seals and technological
More informationEXPERIMENTAL CHARACTERIZATION OF A EJECTOR PUMP
EXPERIMENTAL CHARACTERIZATION OF A EJECTOR PUMP Capela, N. J. S. Department of Mechanical Engineering, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001, Lisbon, Portugal, 2012 ABSTRACT The option
More informationEFFECT OF GEOMETRIC DISTORTION ON THE FLOW FIELD AND PERFORMANCE OF AN AXISYMMETRIC SUPERSONIC INTAKE
Indian J.Sci.Res.() : 909-99, 0 ISSN:50-08(Online) ISSN : 0976-876 (Print) EFFECT OF GEOMETRIC DISTORTION ON THE FLOW FIELD AND PERFORMANCE OF AN AXISYMMETRIC SUPERSONIC INTAKE MOHAMMAD FARAHANI a, ALIREZA
More informationAnother convenient term is gauge pressure, which is a pressure measured above barometric pressure.
VACUUM Theory and Applications Vacuum may be defined as the complete emptiness of a given volume. It is impossible to obtain a perfect vacuum, but it is possible to obtain a level of vacuum, defined as
More informationResearch and optimization of intake restrictor for Formula SAE car engine
International Journal of Scientific and Research Publications, Volume 4, Issue 4, April 2014 1 Research and optimization of intake restrictor for Formula SAE car engine Pranav Anil Shinde Mechanical Engineering,
More informationStudy on the Shock Formation over Transonic Aerofoil
Advances in Aerospace Science and Applications. ISSN 2277-3223 Volume 3, Number 2 (2013), pp. 113-118 Research India Publications http://www.ripublication.com/aasa.htm Study on the Shock Formation over
More informationCOMPUTATIONAL FLOW MODEL OF WESTFALL'S LEADING TAB FLOW CONDITIONER AGM-09-R-08 Rev. B. By Kimbal A. Hall, PE
COMPUTATIONAL FLOW MODEL OF WESTFALL'S LEADING TAB FLOW CONDITIONER AGM-09-R-08 Rev. B By Kimbal A. Hall, PE Submitted to: WESTFALL MANUFACTURING COMPANY September 2009 ALDEN RESEARCH LABORATORY, INC.
More informationCFD Analysis of Supersonic Nozzle with Varying Divergent Profile
CFD Analysis of Supersonic Nozzle with Varying Divergent Profile Kaviya sundar #1, Thanikaivel Murugan. D *2 # UG Degree holder, B.E. Aeronautical Engineering, Jeppiaar Engineering college, Chennai, India,
More informationAnalysis of pressure losses in the diffuser of a control valve
Analysis of pressure losses in the diffuser of a control valve Petr Turecký 1, Lukáš Mrózek 2*, Ladislav Taj 2, and Michal Kolovratník 3 1 ENVIROS, s.r.o., Dykova 53/10, 101 00 Praha 10-Vinohrady, Czech
More informationNumerical and Experimental Investigation of the Possibility of Forming the Wake Flow of Large Ships by Using the Vortex Generators
Second International Symposium on Marine Propulsors smp 11, Hamburg, Germany, June 2011 Numerical and Experimental Investigation of the Possibility of Forming the Wake Flow of Large Ships by Using the
More informationCFD and Physical Modeling of DSI/ACI Distribution
CFD and Physical Modeling of DSI/ACI Distribution APC Round Table & Exposition July 09, 2013 Matt Gentry mgentry@airflowsciences.com 734-525-0300 1 Outline Introduction Flow Analysis Techniques Application
More informationOPTIMIZING THE LENGTH OF AIR SUPPLY DUCT IN CROSS CONNECTIONS OF GOTTHARD BASE TUNNEL. Rehan Yousaf 1, Oliver Scherer 1
OPTIMIZING THE LENGTH OF AIR SUPPLY DUCT IN CROSS CONNECTIONS OF GOTTHARD BASE TUNNEL Rehan Yousaf 1, Oliver Scherer 1 1 Pöyry Infra Ltd, Zürich, Switzerland ABSTRACT Gotthard Base Tunnel with its 57 km
More informationMODELING AND SIMULATION OF VALVE COEFFICIENTS AND CAVITATION CHARACTERISTICS IN A BALL VALVE
Proceedings of the 37 th International & 4 th National Conference on Fluid Mechanics and Fluid Power FMFP2010 December 16-18, 2010, IIT Madras, Chennai, India FMFP2010 341 MODELING AND SIMULATION OF VALVE
More informationDesign and Numerical Flow Analysis of Expansion Deflection Nozzle
Design and Numerical Flow Analysis of Expansion Deflection Nozzle Shaik Abdul Muwaaz 1, Nazumuddin Shaik 2 Post Graduate Student, Assistant Professor 1 Shaik Abdul Muwaaz, Aerospace Department, Nimra Institute
More informationTwo phase discharge flow prediction in safety valves
Dempster W, Elmayyah W/ ICPVT-13 1 Two phase discharge flow prediction in safety valves William Dempster a, Wael Elmayyah b a Department of Mechanical and Aerospace Engineering, University of Strathclyde,
More informationDESIGN AND ANALYSIS OF A COLD GAS PROPULSION SYSTEM FOR STABILIZATION
DESIGN AND ANALYSIS OF A COLD GAS PROPULSION SYSTEM FOR STABILIZATION AND MANEUVERABILITY OF A HIGH ALTITUDE RESEARCH BALLOON COLLEGE OF ENGINEERING & APPLIED SCIENCES SENIOR DESIGN THESIS GREGORY A. NEFF
More informationAIRFLOW GENERATION IN A TUNNEL USING A SACCARDO VENTILATION SYSTEM AGAINST THE BUOYANCY EFFECT PRODUCED BY A FIRE
- 247 - AIRFLOW GENERATION IN A TUNNEL USING A SACCARDO VENTILATION SYSTEM AGAINST THE BUOYANCY EFFECT PRODUCED BY A FIRE J D Castro a, C W Pope a and R D Matthews b a Mott MacDonald Ltd, St Anne House,
More informationOptimization of rotor profiles for energy efficiency by using chamber-based screw model
Optimization of rotor profiles for energy efficiency by using chamber-based screw model Dipl.-Ing. Sven Herlemann, Dr.-Ing. Jan Hauser, Dipl.-Ing. Norbert Henning, GHH RAND Schraubenkompressoren GmbH,
More informationErmenek Dam and HEPP: Spillway Test & 3D Numeric-Hydraulic Analysis of Jet Collision
Ermenek Dam and HEPP: Spillway Test & 3D Numeric-Hydraulic Analysis of Jet Collision J.Linortner & R.Faber Pöyry Energy GmbH, Turkey-Austria E.Üzücek & T.Dinçergök General Directorate of State Hydraulic
More informationCFD Analysis and Experimental Study on Impeller of Centrifugal Pump Alpeshkumar R Patel 1 Neeraj Dubey 2
IJSRD - International Journal for Scientific Research & Development Vol. 3, Issue 2, 21 ISSN (online): 2321-613 Alpeshkumar R Patel 1 Neeraj Dubey 2 1 PG Student 2 Associate Professor 1,2 Department of
More informationTutorial. BOSfluids. Relief valve
Tutorial Relief valve The Relief valve tutorial describes the theory and modeling process of a pressure relief valve or safety valve. It covers the algorithm BOSfluids uses to model the valve and a worked
More informationDEVELOPMENT OF HIGH ALTITUDE TEST FACILITY FOR COLD JET SIMULATION
DEVELOPMENT OF HIGH ALTITUDE TEST FACILITY FOR COLD JET SIMULATION Aldin Justin 1, Robin James, Shruti Panicker 2,A.N.Subash,Saravana Kumar 1 Assistant Professor,Karunya University, aldinjustin@karunya.edu
More informationAIR EJECTOR WITH A DIFFUSER THAT INCLUDES BOUNDARY LAYER SUCTION
Engineering MECHANICS, Vol. 20, 2013, No. 3/4, p. 213 220 213 AIR EJECTOR WITH A DIFFUSER THAT INCLUDES BOUNDARY LAYER SUCTION Václav Dvořák* The article deals with axial-symmetric subsonic air-to-air
More informationAIRFOIL PROFILE OPTIMIZATION OF AN AIR SUCTION EQUIPMENT WITH AN AIR DUCT
THERMAL SCIENCE, Year 2015, Vol. 19, No. 4, pp. 1217-1222 1217 AIRFOIL PROFILE OPTIMIZATION OF AN AIR SUCTION EQUIPMENT WITH AN AIR DUCT by Li QIU a,b, Rui WANG a,*, Xiao-Dong CHEN b, and De-Peng WANG
More informationFlow in a shock tube
Flow in a shock tube April 30, 05 Summary In the lab the shock Mach number as well as the Mach number downstream the moving shock are determined for different pressure ratios between the high and low pressure
More informationPredicting the Suction Gas Superheating in Reciprocating Compressors
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2014 Predicting the Suction Gas Superheating in Reciprocating Compressors Jonatas Ferreira
More informationA COMPARATIVE STUDY OF MIX FLOW PUMP IMPELLER CFD ANALYSIS AND EXPERIMENTAL DATA OF SUBMERSIBLE PUMP
IMPACT: International Journal of Research in Engineering & Technology (IMPACT: IJRET) ISSN 2321-8843 Vol. 1, Issue 3, Aug 2013, 57-64 Impact Journals A COMPARATIVE STUDY OF MIX FLOW PUMP IMPELLER CFD ANALYSIS
More informationInvestigation on 3-D Wing of commercial Aeroplane with Aerofoil NACA 2415 Using CFD Fluent
Investigation on 3-D of commercial Aeroplane with Aerofoil NACA 2415 Using CFD Fluent Rohit Jain 1, Mr. Sandeep Jain 2, Mr. Lokesh Bajpai 3 1PG Student, 2 Associate Professor, 3 Professor & Head 1 2 3
More informationDesign and Analysis of a High Pressure Ratio Mixed Flow Compressor Stage
Design and Analysis of a High Pressure Ratio Mixed Flow Compressor Stage Gaurav Giri 1 and Abdul Nassar. 2 SoftInWay Turbomachinery Solutions Pvt Ltd. 70/10, Cunningham Road, Bangalore, KA, 560052, India
More informationA Research on the Airflow Efficiency Analysis according to the Variation of the Geometry Tolerance of the Sirocco Fan Cut-off for Air Purifier
A Research on the Airflow Efficiency Analysis according to the Variation of the Geometry Tolerance of the Sirocco Fan Cut-off for Air Purifier Jeon-gi Lee*, Choul-jun Choi*, Nam-su Kwak*, Su-sang Park*
More informationNumerical Fluid Analysis of a Variable Geometry Compressor for Use in a Turbocharger
Special Issue Turbocharging Technologies 15 Research Report Numerical Fluid Analysis of a Variable Geometry Compressor for Use in a Turbocharger Yuji Iwakiri, Hiroshi Uchida Abstract A numerical fluid
More informationPERFORMANCE OF A FLAPPED DUCT EXHAUSTING INTO A COMPRESSIBLE EXTERNAL FLOW
24 TH INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES PERFORMANCE OF A FLAPPED DUCT EXHAUSTING INTO A COMPRESSIBLE EXTERNAL FLOW P. R. Pratt, J. K. Watterson, E. Benard, S. Hall School of Aeronautical
More informationThe Mechanism Study of Vortex Tools Drainage Gas Recovery of Gas Well
Advances in Petroleum Exploration and Development Vol. 7, No. 1, 214, pp. 62-66 DOI:1.3968/j.aped.1925543821471.1931 ISSN 1925-542X [Print] ISSN 1925-5438 [Online] www.cscanada.net www.cscanada.org The
More informationInvestigation of Suction Process of Scroll Compressors
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2006 Investigation of Suction Process of Scroll Compressors Michael M. Cui Trane Jack Sauls
More informationS.A. Klein and G.F. Nellis Cambridge University Press, 2011
16-1 A flow nozzle is to be used to determine the mass flow rate of air through a 1.5 inch internal diameter pipe. The air in the line upstream of the meters is at 70 F and 95 psig. The barometric pressure
More informationComputational fluid dynamics analysis of a mixed flow pump impeller
MultiCraft International Journal of Engineering, Science and Technology Vol. 2, No. 6, 2010, pp. 200-206 INTERNATIONAL JOURNAL OF ENGINEERING, SCIENCE AND TECHNOLOGY www.ijest-ng.com 2010 MultiCraft Limited.
More informationNUMERICAL INVESTIGATION OF THE FLOW BEHAVIOUR IN A MODERN TRAFFIC TUNNEL IN CASE OF FIRE INCIDENT
- 277 - NUMERICAL INVESTIGATION OF THE FLOW BEHAVIOUR IN A MODERN TRAFFIC TUNNEL IN CASE OF FIRE INCIDENT Iseler J., Heiser W. EAS GmbH, Karlsruhe, Germany ABSTRACT A numerical study of the flow behaviour
More informationCover Page for Lab Report Group Portion. Compressible Flow in a Converging-Diverging Nozzle
Cover Page for Lab Report Group Portion Compressible Flow in a Converging-Diverging Nozzle Prepared by Professor J. M. Cimbala, Penn State University Latest revision: 13 January 2012 Name 1: Name 2: Name
More informationDesign of a small-scaled de Laval nozzle for IGLIS experiment
Design of a small-scaled de Laval nozzle for IGLIS experiment Evgeny Mogilevskiy, R. Ferrer, L. Gaffney, C. Granados, M. Huyse, Yu. Kudryavtsev, S. Raeder, P. Van Duppen Instituut voor Kern- en Stralingsfysika,
More informationOPTIMIZATION OF RECUPERATER FIN GEOMETRY FOR MICRO GAS TURBINE
OPTIMIZATION OF RECUPERATER FIN GEOMETRY FOR MICRO GAS TURBINE S.Ramamurthy 1 and Bharat Makwana 2 1 Scientist,National Aerospace Laboratories, Bangalore, ramamurthy_srm@yahoo.com 2 Engineer,INOX Private
More informationTWO PHASE FLOW METER UTILIZING A SLOTTED PLATE. Acadiana Flow Measurement Society
TWO PHASE FLOW METER UTILIZING A SLOTTED PLATE Acadiana Flow Measurement Society Gerald L. Morrison Presented by: Mechanical Engineering Department Daniel J. Rudroff 323 Texas A&M University Flowline Meters
More informationCFD Analysis of Giromill Type Vertical Axis Wind Turbine
242 CFD Analysis Giromill Type Vertical Axis Wind Turbine K. Sainath 1, T. Ravi 2, Suresh Akella 3, P. Madhu Sudhan 4 1 Associate Pressor, Department Mechanical Engineering, Sreyas Inst. Engg. & Tech.,
More informationSteady Analysis of NACA Flush Inlet at High Subsonic and Supersonic Speeds
, July 1-3, 2015, London, U.K. Steady Analysis of NACA Flush Inlet at High Subsonic and Supersonic Speeds Taimur A. Shams 1, Masud J 2 Abstract Essence of this research is to report computational analysis
More informationHigher Gas Turbine Operation Flexibility by Improved Diffuser Vanes of a Radial Compressor
Higher Gas Turbine Operation Flexibility by Improved Diffuser Vanes of a Radial Compressor STAR EUROPEAN CONFERENCE 2011 23 March 2011 Amsterdam, The Netherlands Dipl.-Ing. Anis Haj Ayed GmbH, Aachen,
More informationTwo-way Fluid Structure Interaction (FSI) Analysis on the Suction Valve Dynamics of a Hermetic Reciprocating Compressor
Volume 118 No. 18 2018, 4241-4252 ISSN: 1311-8080 (printed version); ISSN: 1314-3395 (on-line version) url: http://www.ijpam.eu ijpam.eu Two-way Fluid Structure Interaction (FSI) Analysis on the Suction
More informationCYCLE ANALYSIS OF LINEAR COMPRESSORS USING THREE- DIMENSIONAL CFD
CYCLE ANALYSIS OF LINEAR COMPRESSORS USING THREE- DIMENSIONAL CFD I. Y. An and Y. L. Lee Department of Mechanical Engineering, Kongju National University, Korea E-Mail: ylee@kongju.ac.kr ABSTRACT In order
More informationNUMERICAL INVESTIGATION OF PRESSURE DROP IN HYDRAULIC SPOOL VALVE
NUMERICAL INVESTIGATION OF PRESSURE DROP IN HYDRAULIC SPOOL VALVE M.O. Abdalla *, T. Nagarajan and F.M. Hashim Mechanical Engineering Department, Universiti Teknologi PETRONAS, 31750 Tronoh, Perak, Malaysia
More informationModeling of Scroll Compressor Using GT-Suite
Modeling of Scroll Compressor Using GT-Suite Ha-Duong Pham Sanden International (Europe) Ltd, German Branch hpham@sanden-europe.com Marek Lehocky Gamma Technologies GmbH M.Lehocky@gtisoft.com The copying,
More informationDrag Divergence and Wave Shock. A Path to Supersonic Flight Barriers
Drag Divergence and Wave Shock A Path to Supersonic Flight Barriers Mach Effects on Coefficient of Drag The Critical Mach Number is the velocity on the airfoil at which sonic flow is first acquired If
More informationA numerical Euler-Lagrange method for bubble tower CO2 dissolution modeling
A numerical Euler-Lagrange method for bubble tower CO2 dissolution modeling Author: Daniel Legendre & Prof. Ron Zevenhoven Åbo Akademi University Thermal and Flow Engineering Laboratory Turku, Finland
More informationDevelopment of Technology to Estimate the Flow Field around Ship Hull Considering Wave Making and Propeller Rotating Effects
Development of Technology to Estimate the Flow Field around Ship Hull Considering Wave Making and Propeller Rotating Effects 53 MAKOTO KAWABUCHI *1 MASAYA KUBOTA *1 SATORU ISHIKAWA *2 As can be seen from
More informationEFFECTIVE DESIGN OF CONVERTER HOODS. 111 Ferguson Ct. Suite 103 Irving, Texas U.S.A. 400 Carlingview Dr. Toronto, ON M9W 5X9 Canada.
EFFECTIVE DESIGN OF CONVERTER HOODS Paykan Safe 1, Sam Matson 1, and John Deakin 2 1 Gas Cleaning Technologies 111 Ferguson Ct. Suite 103 Irving, Texas 75062 U.S.A. 2 H.G. Engineering, Ltd. 400 Carlingview
More informationNumerical Simulation of Flow and Determination of Aerodynamic Forces in the Balanced Control Valve
EPJ Web of Conferences 45, 01062 (2013) DOI: 10.1051/ epjconf/ 20134501062 C Owned by the authors, published by EDP Sciences, 2013 Numerical Simulation of Flow and Determination of Aerodynamic Forces in
More informationEffect of Inlet Clearance Gap on the Performance of an Industrial Centrifugal Blower with Parallel Wall Volute
International Journal of Fluid Machinery and Systems DOI: http://dx.doi.org/10.5293/ijfms.2013.6.3.113 Vol. 6, No. 3, July-September 2013 ISSN (Online): 1882-9554 Original Paper (Invited) Effect of Inlet
More informationSimulations of hydrogen releases from high pressure storage systems
Simulations of hydrogen releases from high pressure storage systems Benjamin Angers a, Pierre Bénard a, Ahmed Hourri a, Pascal Tessier b and Jérôme Perrin c a Institut de recherche sur l hydrogène, Université
More informationPhD student, January 2010-December 2013
Numerical modeling of wave current interactions ata a local scaleand and studyof turbulence closuremodel effects MARIA JOÃO TELES PhD student, January 2010-December 2013 Supervisor: António Pires-Silva,
More informationPerformance Analysis of Centrifugal Compressor under Multiple Working Conditions Based on Time-weighted Average
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2014 Performance Analysis of Centrifugal Compressor under Multiple Working Conditions Based
More informationCover Page for Lab Report Group Portion. Compressible Flow in a Converging-Diverging Nozzle
Cover Page for Lab Report Group Portion Compressible Flow in a Converging-Diverging Nozzle Prepared by Professor J. M. Cimbala, Penn State University Latest revision: Prof. Steve Lynch, 14 February 2017
More informationProduction Optimization through Ejector Installation at ESA Platform Offshore North West Java Field
Production Optimization through Ejector Installation at ESA Platform Offshore North West Java Field Arii Bowo Yudhaprasetya, Ario Guritno, Agus Setiawan, Recky Tehupuring, Cosmas Supriatna Abstract The
More informationEDUCTOR. principle of operation
EDUCTOR principle of operation condensate and mixing eductor s are designed to mix two liquids intimately in various proportions in operations where the pressure liquid is the greater proportion of the
More informationREFERENCE GUIDE. Rev. 0 15/09/2016
VALVE SIZING CALCULATOR REFERENCE GUIDE Rev. 0 15/09/2016 Copyright HIT VALVE S.p.A. 2016 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted,
More informationEffect of Diameter on the Aerodynamics of Sepaktakraw Balls, A Computational Study
ISSN 1750-9823 (print) International Journal of Sports Science and Engineering Vol. 03 (2009) No. 01, pp. 017-021 Effect of Diameter on the Aerodynamics of Sepaktakraw Balls, A Computational Study Zahari
More informationInternational Journal of Technical Research and Applications e-issn: , Volume 4, Issue 3 (May-June, 2016), PP.
DESIGN AND ANALYSIS OF FEED CHECK VALVE AS CONTROL VALVE USING CFD SOFTWARE R.Nikhil M.Tech Student Industrial & Production Engineering National Institute of Engineering Mysuru, Karnataka, India -570008
More informationUniversities of Leeds, Sheffield and York
promoting access to White Rose research papers Universities of Leeds, Sheffield and York http://eprints.whiterose.ac.uk/ This is the Author's Accepted version of an article published in the Journal of
More informationComputational Analysis of the S Airfoil Aerodynamic Performance
Computational Analysis of the 245-3S Airfoil Aerodynamic Performance Luis Velazquez-Araque and Jiří Nožička 2 Department of Mechanical Engineering National University of Táchira, San Cristóbal 5, Venezuela
More informationAnalysis of Pressure Rise During Internal Arc Faults in Switchgear
Analysis of Pressure Rise During Internal Arc Faults in Switchgear ASANUMA, Gaku ONCHI, Toshiyuki TOYAMA, Kentaro ABSTRACT Switchgear include devices that play an important role in operations such as electric
More informationImprovement of the Volumetric and Isentropic Efficiency Due to Modifications of the Suction Chamber
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2008 Improvement of the Volumetric and Isentropic Efficiency Due to Modifications of the
More informationInfluencing Factors Study of the Variable Speed Scroll Compressor with EVI Technology
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2016 Influencing Factors Study of the Variable Speed Scroll Compressor with EVI Technology
More informationCFD Modelling of LPG dispersion
CHAM Limited Pioneering CFD Software for Education & Industry CFD Modelling of LPG dispersion Demonstration example The following describes the numerical analysis of the dispersion of gas release from
More informationAerodynamics of Winglet: A Computational Fluid Dynamics Study Using Fluent
Aerodynamics of : A Computational Fluid Dynamics Study Using Fluent Rohit Jain 1, Mr. Sandeep Jain, Mr. Lokesh Bajpai 1PG Student, Associate Professor, Professor & Head 1 Mechanical Engineering Department
More informationGrid Generation for Screw Compressors with Variable Geometry Rotors
APCOM & ISCM 11-14 th December, 2013, Singapore Grid Generation for Screw Compressors with Variable Geometry Rotors Abstract *A. Kovacevic, S. Rane and N. Stosic City University London, Northampton Square,
More informationCharacteristics of Decompression Tank Internally Pressurized With Water Using OpenFOAM Syamsuri 1, a
Applied Mechanics and Materials Submitted: 2015-11-26 ISSN: 1662-7482, Vol. 836, pp 3-8 Accepted: 2016-01-27 doi:10.4028/www.scientific.net/amm.836.3 Online: 2016-06-01 2016 Trans Tech Publications, Switzerland
More informationDesign of a Solid Wall Transonic Wind Tunnel
Design of a Solid Wall Transonic Wind Tunnel David Wall * Auburn University, Auburn, Alabama, 36849 A solid wall transonic wind tunnel was designed with optical access from three sides to allow for flow
More informationWorkshop 1: Bubbly Flow in a Rectangular Bubble Column. Multiphase Flow Modeling In ANSYS CFX Release ANSYS, Inc. WS1-1 Release 14.
Workshop 1: Bubbly Flow in a Rectangular Bubble Column 14. 5 Release Multiphase Flow Modeling In ANSYS CFX 2013 ANSYS, Inc. WS1-1 Release 14.5 Introduction This workshop models the dispersion of air bubbles
More informationDesign & Analysis of Natural Laminar Flow Supercritical Aerofoil for Increasing L/D Ratio Using Gurney Flap
Design & Analysis of Natural Laminar Flow Supercritical Aerofoil for Increasing L/D Ratio Using Gurney Flap U.Praveenkumar 1, E.T.Chullai 2 M.Tech Student, School of Aeronautical Science, Hindustan University,
More informationNumerical Simulation for the Internal Flow Analysis of the Linear Compressor with Improved Muffler
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2016 Numerical Simulation for the Internal Flow Analysis of the Linear Compressor with Improved
More informationNew Technologies applied to the design and optimization of tunnel ventilation systems
New Technologies applied to the design and optimization of tunnel ventilation systems Ing. Justo Suárez Area Manager - ZITRON Dot. Ing. Massimiliano Bringiotti Managing Director - GEOTUNNEL Ing. Ana Belén
More informationFig. 2. M.I. Yaroslavtsev, 2002
SPECIAL FEATURES OF USING N O FOR HEATING OF THE TEST GAS IN A HOT-SHOT WIND TUNNEL M.I. Yaroslavtsev Institute of Theoretical and Applied Mechanics SB RAS, 630090 Novosibirsk Russia 1. The study of heat
More informationPart 6: Critical flow orifices
Provläsningsexemplar / Preview INTERNATIONAL STANDARD ISO 6145-6 Third edition 2017-07 Gas analysis Preparation of calibration gas mixtures using dynamic methods Part 6: Critical flow orifices Analyse
More informationResearch Article Numerical Investigation of a Liquid-Gas Ejector Used for Shipping Ballast Water Treatment
Mathematical Problems in Engineering, Article ID 259593, 7 pages http://dx.doi.org/10.1155/2014/259593 Research Article Numerical Investigation of a Liquid-Gas Ejector Used for Shipping Ballast Water Treatment
More informationDesign Review Agenda
Design Review Agenda 1) Introduction, Motivation, and Previous Work a. Previous Work and Accomplishments i. Platform Launches ii. Successful Test Firings 2) More In-Depth Design Overview of the Existing
More informationCOMPARISON OF PERFORMANCE OF CONIC AND RAMP INLET USING CFD
International Journal of Mechanical Engineering and Technology (IJMET) Volume 8, Issue 7, July 2017, pp. 190 198, Article ID: IJMET_08_07_023 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=8&itype=7
More informationNew Findings for the Application of Systems for Explosion- Isolation with Explosion Venting
529 A publication of CHEMICAL ENGINEERING TRANSACTIONS VOL. 48, 2016 Guest Editors: Eddy de Rademaeker, Peter Schmelzer Copyright 2016, AIDIC Servizi S.r.l., ISBN 978-88-95608-39-6; ISSN 2283-9216 The
More informationExperimental Analysis on Vortex Tube Refrigerator Using Different Conical Valve Angles
International Journal of Engineering Research and Development e-issn: 7-067X, p-issn: 7-00X, www.ijerd.com Volume 3, Issue 4 (August ), PP. 33-39 Experimental Analysis on Vortex Tube Refrigerator Using
More informationCFD SIMULATION STUDY OF AIR FLOW AROUND THE AIRFOIL USING THE MAGNUS EFFECT
Magnus effect, simulation, air flow Patryk SOKOŁOWSKI *, Jacek CZARNIGOWSKI **, Paweł MAGRYTA *** CFD SIMULATION STUDY OF AIR FLOW AROUND THE AIRFOIL USING THE MAGNUS EFFECT Abstract The article presents
More informationCFD Analysis and Experiment Study of the Rotary Two-Stage Inverter Compressor with Vapor Injection
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2016 CFD Analysis and Experiment Study of the Rotary Two-Stage Inverter Compressor with
More information