Free Surface Flow Simulation with ACUSIM in the Water Industry

Size: px
Start display at page:

Download "Free Surface Flow Simulation with ACUSIM in the Water Industry"

Transcription

1 Free Surface Flow Simulation with ACUSIM in the Water Industry Tuan Ta Research Scientist, Innovation, Thames Water Kempton Water Treatment Works, Innovation, Feltham Hill Road, Hanworth, TW13 6XH, UK. Abstract In the Water industry, almost all is free surface flow. A slow varying water surface is found when filling and emptying a water storage tank; still slow turbulent flow is found in the flow distribution channels, and higher turbulent flow is found in the pump sumps. Understanding the free surface flow is important for the engineering design and for the process performance optimisation. Current computational fluid dynamic (CFD) simulations experience difficulties with free surface flow problems. Assumptions have to be made to simplify the problem into single phase calculations. More models using Volume of Fluid method and Eulerian-Eulerian multiphase are becoming available but, in these models, there remains the uncertainty in locating the water surface. ACUSIM s free surface modelling capability is seen as an alternative. This paper presents the results of current investigations. Keywords: Free Surface, Outfall, Pump Station, Vortex, Service Reservoir, Water Jet 1.0 Introduction Many water treatment processes employ an open top tank operating in a steady flow condition. As the feed and discharge are equal, the water surface is flat and horizontal. This steady flow condition ensures the treatment processes to have sufficient time to operate. The flat water surface has little influence on the flow pattern in the tank and, in most cases, only allows the removal of floatable (low density, air bubbles) objects. The inlet and outlet are submerged and as the flow is normally low (velocity <0.1m/s), they do not affect the water surface. The CFD model of the tank simply assumes the water surface as either zero shear stress fixed wall or symmetry plane with zero vertical velocity component. Examples of these treatment plants include the sedimentation tank, the dissolved air flotation tank, the ozone tank and the disinfection contact tank. Tanks used for water storage are subject to variations of water level. A service reservoir is used to store clean water in the water distribution networks. The varying reservoir water level determines both the flow control and the mixing, which are important for reservoir operation. Storm tanks are used to hold excessive storm water also operate with varying water levels. The performance of the storm tank operation can only be evaluated if the water level is simulated accurately. Simulation of the water surface movement using the Volume of Fluid (VOF) method is difficult because the vertical dimension is normally much Altair Engineering

2 smaller than the horizontal dimension. Furthermore, the water level can only be extracted from a selected volume fraction value (e.g. 0.7), and the result can be different from that of other volume fraction values. Tanks used for distribution of flow are normally operated at higher flow (velocity ~ 1m/s) and have varying water surface. The main objective of the distribution channel is to deliver flow to many parallel streams at controlled rates. The feed channel to an array of filters is an open flow channel. The water surface is flat but with gradient sloping downward away from the inlet end. The design requires an even flow distribution (variation < 5%) to each unit, which in turn is determined by the water level. In many cases, engineering formulae cannot be applied because of the complex geometry of the arrangement. The distribution chamber is used to distribute the flow to a number of sedimentation tanks, and again correct feed is essential. The small (~ the inlet dimension) chamber causes the varied water surface, which determines the discharge over the weirs to the units. CFD simulation must be employed for the design calculation. For the distribution of flow in the large pump suction chamber, (> the inlet/outlet dimension), the flow pattern is determined by the geometry of the tank. Each outlet, which is the suction pipe, creates a local downward flow. This downward flow then gives rise to vortices if the horizontal flow circulation due to the local geometry exists. Simulation of the vortices and/or potential to vortices is required to determine the lowest operating water level of the suction chamber. Current CFD simulation assume a flat water surface and simply calculates the potential of vortex formation. For better results, free surface model is desirable. Examples of the suction chambers include the pump chamber of water intake, the pumping station and the sewage transfer station. Higher flow velocity (>2m/s) flow causes a highly turbulent water surface. This flow condition is found in the outfall and the sewage tunnels. A Multiphase Eulerian-Eulerian CFD model is required although recently the VOF model has become more available. In this paper, the following examples will be discussed Design of an Outfall Simulation of the pump suction chamber Simulation for service reservoirs The comparison of the simulation and the experimental results are visual only. Quantitative measurements are presented elsewhere. 2.0 The Design of an Outfall Outfall is used to discharge water into rivers or an open flow area. The concern arises when the discharge flow is high (> 2m/s) as it may cause structural damage, scouring and flooding. Figure 1 shows an example of an outfall. The flow (>8m/s) is fed at the two inlets into a chamber and is subsequently discharged over a weir into the river. Altair Engineering 2011 Free Surface Flow Simulation with ACUSIM in Water the Industry 2

3 The design of the outfall requires: Figure 1: Geometry of an Outfall Flow velocity over the weir to be sufficiently low. This is determined by the length of the weir when the flow is evenly distributed. Small footprint for low installation cost. Simplicity for low maintenance. Figure 2 shows various designs which were investigated. Free surface simulations of the flow is required to demonstrate the effectiveness of the preferred option. Figure 2: Various Designs of the Outfall Altair Engineering 2011 Free Surface Flow Simulation with ACUSIM in Water the Industry 3

4 Figure 3 shows the result of the simulation for the option using wedges. The simulation was carried out using ACUSIM software, part of the HyperWorks suite of CAE software. Figure 3: Simulation result and Installation 1. The model was transient turbulent (Spalart-Allmaras) flow and arbitrary mesh movement option. 2. The time increment is auto between s. 3. Gravity was included. 4. The top surface was specified as free surface option with surface tension. Initially this surface was flat. 5. Side walls and wedges were specified wall and slip as mesh displacement type. 6. Outlet was outflow and slip as mesh displacement type. In comparison with VOF model, the free surface option of ACUSIM software gives a clear indication of the water surface, which is required to determine the height of the outfall walls. At low flow, however, the free surface hits the outlet weir causing severe mesh distortion error. Only recently VOF modelling is becoming robust so that the solution will converge. Eulerian-Eulerian modelling has also developed. The advantage of this method is that the flow into an empty outfall could be simulated. In both models, water surface can only be obtained by assuming a value of volume fraction. Altair Engineering 2011 Free Surface Flow Simulation with ACUSIM in Water the Industry 4

5 3.0 Pumping Suction Chamber: Figure 4 shows the tank being used as the pump suction chamber. Water was delivered into the chamber via four penstocks, and water was pumped out of the tank via seven 90 o downward pipes with a bellmouth. Not all the penstocks were opened, and not all the pumps were in operation all the time. Figure 4: Pump Suction Chamber The ACUSIM model was set up using the setting as shown in the outfall model (section 2). The outlets (the bellmouth openings) were specified as fixed mesh displacement types. Because the flow entered the tank in various directions, horizontal flow circulation was expected. At low water level (<1D pipe above the bellmouth), the downward flow caused the vortex to form from the flow circulation in the vicinity. The result of the simulation indicated that the water surface was lowered in some areas but the vortex was not observed. Figure 5 shows the formation of the vortex in a different arrangement. The vortex caused the air to enter the pump. It is observed that the water surface is essentially flat and, for this experiment, the flow velocity is low. The local flow circulation could hardly be seen without the vortex. Once the air was sucked into the outlet pipe, the vortex disappeared and then formed later. Altair Engineering 2011 Free Surface Flow Simulation with ACUSIM in Water the Industry 5

6 Figure 5: Vortex Formation The current ACUSIM model showed clear indication of the water levels and the flow circulation but simulation of the vortex has not been achieved yet by the author. To investigate further, an experiment has been set up (Figure 6). The cylindrical tank was used with the inlet pipe being tangential to the circumference and the outlet was an opening at the bottom. Initially the tank was fed from partially full to full with closed outlet. The feed was then stopped to leave the circulation to slow down with flat water surface. The outlet was then opened to observe the vortex formation. In the early stage, the vortex was simulated, the visual agreement with the observation is shown the figure. In the later stage, the simulation was stopped because of severe mesh distortion error. The vortex, however, was observed to continue to develop (Figure 6 B) to form an air column at the centre of the tank. Figure 6: Simple Arrangement to check the Vortex Simulation Altair Engineering 2011 Free Surface Flow Simulation with ACUSIM in Water the Industry 6

7 4.0 Service Reservoir A service reservoir is used by the water industry for the storage of drinking water. The arrangement is simply a tank with a few inlet and outlet pipes (Figure 7). The water level in the tank rises when the tank is filled and falls when the tank is emptied. Figure 7: Geometry of a Service Reservoir The tank must be mixed to ensure that there is no flow stagnation zone causing excessive water age. Mixed condition is also required during the disinfection boosting. The mixing of the reservoir depends on the inlet arrangement and is encouraged by the movement of the water level. For most tanks, the inlets and outlets are submerged and the water surface is a moving (up and down) flat surface. CFD modelling of these tanks is carried out either using the deforming mesh approach or the ACUSIM free surface model. For some tanks, the inlet is at the high level (Figure 7). The inlet with a ball valve delivers flow as a downward jet onto the bulk water. For other tanks, the inlet is a vertical pipe with a bellmouth, which causes the flow to cascade downward along the pipe when the inlet is not submerged. These inlet geometries are to be modelled using the free surface simulation. For design calculation purposes, single phase modelling can only be used by assuming the inlet of appropriate area at the water surface. Figure 8 shows the ACUSIM simulation of a downward water jet on a water tank. Initially the jet was a cylindrical pipe with a pipe wall specified as free surface. The setting was the same as in sections 2 and 3. Visual agreement with simple experimental arrangement (not shown) was observed. Validation experiment is in progress. Altair Engineering 2011 Free Surface Flow Simulation with ACUSIM in Water the Industry 7

8 Figure 8: Simulation of Jet onto a Water Tank 5.0 Conclusions In comparison with VOF model, the free surface option of the ACUSIM software gives a clear indication of the water surface, which is required to determine the height of the outfall walls. It has been demonstrated that ACUSIM is a solution for simulating free surface flow problems. Altair Engineering 2011 Free Surface Flow Simulation with ACUSIM in Water the Industry 8

Computer Simulation Helps Improve Vertical Column Induced Gas Flotation (IGF) System

Computer Simulation Helps Improve Vertical Column Induced Gas Flotation (IGF) System JOURNAL ARTICLES BY FLUENT SOFTWARE USERS JA187 Computer Simulation Helps Improve Vertical Column Induced Gas Flotation (IGF) System Computer simulation has helped NATCO engineers make dramatic improvements

More information

OIL SUPPLY SYSTEMS ABOVE 45kW OUTPUT 4.1 Oil Supply

OIL SUPPLY SYSTEMS ABOVE 45kW OUTPUT 4.1 Oil Supply OIL SUPPLY SYSTEMS ABOVE 45kW OUTPUT 4.1 Oil Supply 4.1.1 General The primary function of a system for handling fuel oil is to transfer oil from the storage tank to the oil burner at specified conditions

More information

AIRFLOW GENERATION IN A TUNNEL USING A SACCARDO VENTILATION SYSTEM AGAINST THE BUOYANCY EFFECT PRODUCED BY A FIRE

AIRFLOW 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 information

Ermenek 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 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 information

International Journal of Technical Research and Applications e-issn: , Volume 4, Issue 3 (May-June, 2016), PP.

International 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 information

CFD for Ballast Water & Bio-fouling Management

CFD for Ballast Water & Bio-fouling Management CFD for Ballast Water & Bio-fouling Management Vivek V. Ranade Catalysis, Reactors & Separation Unit (CReST) Chemical Engineering Division National Chemical Laboratory Pune 411008 vv.ranade@ncl.res.in

More information

OPTIMIZATION OF INERT GAS FLOW INSIDE LASER POWDER BED FUSION CHAMBER WITH COMPUTATIONAL FLUID DYNAMICS. Abstract. Introduction

OPTIMIZATION OF INERT GAS FLOW INSIDE LASER POWDER BED FUSION CHAMBER WITH COMPUTATIONAL FLUID DYNAMICS. Abstract. Introduction Solid Freeform Fabrication 2018: Proceedings of the 29th Annual International Solid Freeform Fabrication Symposium An Additive Manufacturing Conference OPTIMIZATION OF INERT GAS FLOW INSIDE LASER POWDER

More information

NUMERICAL INVESTIGATION OF PRESSURE DROP IN HYDRAULIC SPOOL VALVE

NUMERICAL 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 information

Wind Flow Model of Area Surrounding the Case Western Reserve University Wind Turbine

Wind Flow Model of Area Surrounding the Case Western Reserve University Wind Turbine Wind Flow Model of Area Surrounding the Case Western Reserve University Wind Turbine Matheus C. Fernandes 1, David H. Matthiesen PhD *2 1 Case Western Reserve University Dept. of Mechanical Engineering,

More information

Numerical and Experimental Investigation of the Possibility of Forming the Wake Flow of Large Ships by Using the Vortex Generators

Numerical 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 information

A STUDY OF THE LOSSES AND INTERACTIONS BETWEEN ONE OR MORE BOW THRUSTERS AND A CATAMARAN HULL

A STUDY OF THE LOSSES AND INTERACTIONS BETWEEN ONE OR MORE BOW THRUSTERS AND A CATAMARAN HULL A STUDY OF THE LOSSES AND INTERACTIONS BETWEEN ONE OR MORE BOW THRUSTERS AND A CATAMARAN HULL L Boddy and T Clarke, Austal Ships, Australia SUMMARY CFD analysis has been conducted on a 100m catamaran hull

More information

Workshop 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. 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 information

Wind tunnel effects on wingtip vortices

Wind tunnel effects on wingtip vortices 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition 4-7 January 2010, Orlando, Florida AIAA 2010-325 Wind tunnel effects on wingtip vortices Xin Huang 1, Hirofumi

More information

Numerical Simulations of a Train of Air Bubbles Rising Through Stagnant Water

Numerical Simulations of a Train of Air Bubbles Rising Through Stagnant Water Numerical Simulations of a Train of Air Bubbles Rising Through Stagnant Water Hong Xu, Chokri Guetari ANSYS INC. Abstract Transient numerical simulations of the rise of a train of gas bubbles in a liquid

More information

The 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 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 information

A Study on the Effects of Wind on the Drift Loss of a Cooling Tower

A Study on the Effects of Wind on the Drift Loss of a Cooling Tower A Study on the Effects of Wind on the Drift Loss of a Cooling Tower Wanchai Asvapoositkul 1* 1 Department of Mechanical Engineering, Faculty of Engineering, King Mongkut s University of Technology Thonburi

More information

Flow transients in multiphase pipelines

Flow transients in multiphase pipelines Flow transients in multiphase pipelines David Wiszniewski School of Mechanical Engineering, University of Western Australia Prof. Ole Jørgen Nydal Multiphase Flow Laboratory, Norwegian University of Science

More information

Development 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 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 information

Figure 1. Outer dimensions of the model trucks.

Figure 1. Outer dimensions of the model trucks. 1 Standardisation of test method for salt spreader: Air flow experiments Report 3: Simulations of airflow patterns by Jan S. Strøm, Consultant Aarhus University, Engineering Centre Bygholm, Test and Development

More information

Determination of the wind pressure distribution on the facade of the triangularly shaped high-rise building structure

Determination of the wind pressure distribution on the facade of the triangularly shaped high-rise building structure Determination of the wind pressure distribution on the facade of the triangularly shaped high-rise building structure Norbert Jendzelovsky 1,*, Roland Antal 1 and Lenka Konecna 1 1 STU in Bratislava, Faculty

More information

Vortex valve Karel Adámek 1,*, Jan Kolář 1, and Pavel Peukert 1 1 VÚTS Liberec, a.s., Department of Flow Simulations, Svárovská 619, 46001 Liberec, Czech Republic Abstract. The paper deals with a flow

More information

OPTIMIZATION OF SINGLE STAGE AXIAL FLOW COMPRESSOR FOR DIFFERENT ROTATIONAL SPEED USING CFD

OPTIMIZATION 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 information

Akasison Flow phenomena of a siphonic roof outlet

Akasison Flow phenomena of a siphonic roof outlet Akasison Flow phenomena of a siphonic roof outlet Ir. Marc Buitenhuis MTD Hydraulic research engineer Akatherm BV, Panningen, The Netherlands 06-01-2011 Abstract So far the investigations on siphonic roof

More information

Computational Analysis of the S Airfoil Aerodynamic Performance

Computational 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 information

Design a grit chamber for population with water consumption of 135 LPCD.

Design a grit chamber for population with water consumption of 135 LPCD. 1 Example:1 Design a grit chamber for population 50000 with water consumption of 135 LPCD. Solution Average quantity of sewage, considering sewage generation 80% of water supply, is = 135 x 50000 x 0.8

More information

Module 15 : Grit Chamber. Lecture 20 : Grit Chamber

Module 15 : Grit Chamber. Lecture 20 : Grit Chamber 1 P age Module 15 : Grit Chamber Lecture 20 : Grit Chamber 2 P age 15.6 Square Grit Chamber The horizontal flow rectangular grit chamber faces the problem of sedimentation of organic matter along with

More information

Numerical Simulation of Fluid-Structure Interaction in the Design Process for a New Axial Hydraulic Pump

Numerical Simulation of Fluid-Structure Interaction in the Design Process for a New Axial Hydraulic Pump Numerical Simulation of Fluid-Structure Interaction in the Design Process for a New Axial Hydraulic Pump Bettina Landvogt¹, Leszek Osiecki², Tomasz Zawistowski³, Bartek Zylinski 4 1 Fraunhofer SCAI, Germany,

More information

Aerodynamics of a wind turbine

Aerodynamics of a wind turbine Aerodynamics of a wind turbine Author: Kosmacheva Anna Supervisor: Jari Hämäläinen Lappeenranta University of Technology Technomatematics Introduction Wind turbine is a device that converts kinetic energy

More information

CFD Analysis ofwind Turbine Airfoil at Various Angles of Attack

CFD 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 information

Application of CFD for Improved Vertical Column Induced Gas Flotation (IGF) System Development

Application of CFD for Improved Vertical Column Induced Gas Flotation (IGF) System Development Application of CFD for Improved Vertical Column Induced Gas Flotation (IGF) System Development Chang-Ming Lee and Ted Frankiewicz NATCO Group, Inc., 2950 North Loop West, Suite 750, Houston, TX 77092 Prepared

More information

NUMERICAL INVESTIGATION OF THE FLOW BEHAVIOUR IN A MODERN TRAFFIC TUNNEL IN CASE OF FIRE INCIDENT

NUMERICAL 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 information

COMPUTATIONAL 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 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 information

Aerodynamic study of a cyclist s moving legs using an innovative approach

Aerodynamic study of a cyclist s moving legs using an innovative approach Aerodynamic study of a cyclist s moving legs using an innovative approach Francesco Pozzetti 30 September 2017 Abstract During a period of four weeks in September, I completed a research project in fluid

More information

Transient Analyses In Relief Systems

Transient Analyses In Relief Systems Transient Analyses In Relief Systems Dirk Deboer, Brady Haneman and Quoc-Khanh Tran Kaiser Engineers Pty Ltd ABSTRACT Analyses of pressure relief systems are concerned with transient process disturbances

More information

A numerical Euler-Lagrange method for bubble tower CO2 dissolution modeling

A 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 information

Analyzing a Malfunctioning Clarifier with COMSOL s Mixture Model

Analyzing a Malfunctioning Clarifier with COMSOL s Mixture Model Excerpt from the Proceedings of the COMSOL Conference 2008 Hannover Analyzing a Malfunctioning Clarifier with COMSOL s Mixture Model Arie C. de Niet,1, Arjen F. van Nieuwenhuijzen 1, and Arthur J. Geilvoet

More information

ANALYSIS OF AERODYNAMIC CHARACTERISTICS OF A SUPERCRITICAL AIRFOIL FOR LOW SPEED AIRCRAFT

ANALYSIS 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 information

Investigation on Divergent Exit Curvature Effect on Nozzle Pressure Ratio of Supersonic Convergent Divergent Nozzle

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 information

ZIN Technologies PHi Engineering Support. PHi-RPT CFD Analysis of Large Bubble Mixing. June 26, 2006

ZIN Technologies PHi Engineering Support. PHi-RPT CFD Analysis of Large Bubble Mixing. June 26, 2006 ZIN Technologies PHi Engineering Support PHi-RPT-0002 CFD Analysis of Large Bubble Mixing Proprietary ZIN Technologies, Inc. For nearly five decades, ZIN Technologies has provided integrated products and

More information

FLOW CONSIDERATIONS IN INDUSTRIAL SILENCER DESIGN

FLOW CONSIDERATIONS IN INDUSTRIAL SILENCER DESIGN FLOW CONSIDERATIONS IN INDUSTRIAL SILENCER DESIGN George Feng, Kinetics Noise Control, Inc., 3570 Nashua Drive, Mississauga, Ontario Vadim Akishin, Kinetics Noise Control, Inc., 3570 Nashua Drive, Mississauga,

More information

OIL AND GAS INDUSTRY

OIL AND GAS INDUSTRY This case study discusses the sizing of a coalescer filter and demonstrates its fouling life cycle analysis using a Flownex model which implements two new pressure loss components: - A rated pressure loss

More information

PERFORMANCE OF A FLAPPED DUCT EXHAUSTING INTO A COMPRESSIBLE EXTERNAL FLOW

PERFORMANCE 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 information

Fluid-Structure Interaction Analysis of a Flow Control Device

Fluid-Structure Interaction Analysis of a Flow Control Device Abaqus Technology Brief Fluid-Structure Interaction Analysis of a Control Device TB-06-FSI-2 Revised: April 2007. Summary The Vernay VernaFlo flow controls are custom-designed fluid flow management devices

More information

Evaluation of Cavitation in Hydraulic Turbomachinery Using STAR-CCM+

Evaluation of Cavitation in Hydraulic Turbomachinery Using STAR-CCM+ Evaluation of Cavitation in Hydraulic Turbomachinery Using STAR-CCM+ Dr. Edward M. Bennett Vice President of Fluids Engineering Mechanical Solutions, Inc. Whippany, NJ07981 USA emb@mechsol.com 7 March,

More information

A Computational Assessment of Gas Jets in a Bubbly Co-Flow 1

A Computational Assessment of Gas Jets in a Bubbly Co-Flow 1 A Computational Assessment of Gas Jets in a Bubbly Co-Flow 1 Melissa Fronzeo*, 1 Michael Kinzel 1 The Pennsylvania State University, University Park, PA, USA Abstract In this effort, Computational Fluid

More information

Lecture 10 : Sewer Appurtenances

Lecture 10 : Sewer Appurtenances 1 P age Module 8 : Sewer Appurtenances Lecture 10 : Sewer Appurtenances 2 P age The structures, which are constructed at suitable intervals along the sewerage system to help its efficient operation and

More information

White Paper. Electrical control valve actuators on oil and gas production separators

White Paper. Electrical control valve actuators on oil and gas production separators White Paper Electrical control valve actuators on oil and gas production separators Electrical control valve actuators on oil and gas production separators White Paper 18 th August 2014 Electrical control

More information

SIMULATION OF ENTRAPMENTS IN LCM PROCESSES

SIMULATION OF ENTRAPMENTS IN LCM PROCESSES Douai, FRANCE - July 6 SIMULATION OF ENTRAPMENTS IN LCM PROCESSES René Arbter, Paolo Ermanni Centre of Structure Technologies ETH Zurich, Leonhardstr. 7, 89 Zurich, Switzerland: rarbter@ethz.ch ABSTRACT:

More information

An Impeller Blade Analysis of Centrifugal Gas Compressor Using CFD

An 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 information

HYDRAULICS. H89.8D - Hydraulic Bench

HYDRAULICS. H89.8D - Hydraulic Bench HYDRAULICS H89.8D - Hydraulic Bench 1. General The H89.8D and ancillary equipment have been developed to provide a comprehensive range of experiments in fluid mechanics. The bench is of robust construction

More information

Air Eliminators and Combination Air Eliminators Strainers

Air Eliminators and Combination Air Eliminators Strainers Description Air Eliminators and Combination Air Eliminator Strainers are designed to provide separation, elimination and prevention of air in piping systems for a variety of installations and conditions.

More information

DAV - P. Product Catalogue DAV - P. Air release & Vacuum Break Valves. (Plastic Air Valves) DAV - P. Edition 2012

DAV - P. Product Catalogue DAV - P. Air release & Vacuum Break Valves. (Plastic Air Valves) DAV - P. Edition 2012 Product Catalogue DAV - P DAV - P Air release & Vacuum Break Valves Edition 1 DAV - P (Plastic Air Valves) DAV Series Overview General The presence of trapped air in a pressurized pipeline can have serious

More information

THEORETICAL EVALUATION OF FLOW THROUGH CENTRIFUGAL COMPRESSOR STAGE

THEORETICAL 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 information

Experiment Instructions

Experiment Instructions Experiment Instructions Syphon Spillway Experiment Instructions Please read and follow the instructions before the first installation! Publication-no.: 917.000 36 A 160 02 (A) 01/2000, (DTP_2), 05/1999

More information

Gerald D. Anderson. Education Technical Specialist

Gerald D. Anderson. Education Technical Specialist Gerald D. Anderson Education Technical Specialist The factors which influence selection of equipment for a liquid level control loop interact significantly. Analyses of these factors and their interactions

More information

THE PERFORMANCE OF PLANING HULLS IN TRANSITION SPEEDS

THE PERFORMANCE OF PLANING HULLS IN TRANSITION SPEEDS THE PERFORMANCE OF PLANING HULLS IN TRANSITION SPEEDS BY DOYOON KIM UNIVERSITY OF SOUTHAMPTON LIST OF CONTENTS AIM & OBJECTIVE HYDRODYNAMIC PHENOMENA OF PLANING HULLS TOWING TANK TEST RESULTS COMPUTATIONAL

More information

TROUBLESHOOTING GUIDELINES

TROUBLESHOOTING GUIDELINES TROUBLESHOOTING GUIDELINES PROBLEM: Performance 1. The most common problem in this area comes from inadequate flow to the LAKOS Separator(s). All LAKOS Separators operate within a prescribed flow range

More information

Two-way Fluid Structure Interaction (FSI) Analysis on the Suction Valve Dynamics of a Hermetic Reciprocating Compressor

Two-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 information

Numerical Simulation of Wave Loads on Static Offshore Structures

Numerical Simulation of Wave Loads on Static Offshore Structures Numerical Simulation of Wave Loads on Static Offshore Structures Hrvoje Jasak, Inno Gatin, Vuko Vukčević Wikki Ltd, United Kingdom Faculty of Mechanical Engineering and Naval Architecture University of

More information

INTERNATIONAL JOURNAL OF CIVIL AND STRUCTURAL ENGINEERING Volume 3, No 1, 2012

INTERNATIONAL JOURNAL OF CIVIL AND STRUCTURAL ENGINEERING Volume 3, No 1, 2012 INTERNATIONAL JOURNAL OF CIVIL AND STRUCTURAL ENGINEERING Volume 3, No 1, 2012 Copyright by the authors - Licensee IPA- Under Creative Commons license 3.0 Research article ISSN 0976 4399 ABSTRACT Scour

More information

THE INFLOW OF UNWANTED AIR

THE INFLOW OF UNWANTED AIR IN PRESSURIZED PIPES The main reason for the inflow of air in public water distribution systems is excessive water velocity. Air traveling with water in pressurized pipes can result in high turbulence

More information

ANSWERS TO QUESTIONS IN THE NOTES AUTUMN 2018

ANSWERS TO QUESTIONS IN THE NOTES AUTUMN 2018 ANSWERS TO QUESTIONS IN THE NOTES AUTUMN 2018 Section 1.2 Example. The discharge in a channel with bottom width 3 m is 12 m 3 s 1. If Manning s n is 0.013 m -1/3 s and the streamwise slope is 1 in 200,

More information

IMPROVING PLANT AERATION USING GAS INFUSION TECHNOLOGY

IMPROVING PLANT AERATION USING GAS INFUSION TECHNOLOGY IMPROVING PLANT AERATION USING GAS INFUSION TECHNOLOGY AERATION IN WASTEWATER Municipal sewer collection systems-odor Mgmt. Lift and transfer stations Lagoons / Retention Ponds BOD / COD treatment Enhanced

More information

OPTIMIZING 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 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 information

Application of Computational Fluid Dynamics to Compressor Efficiency Improvement

Application of Computational Fluid Dynamics to Compressor Efficiency Improvement Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 1994 Application of Computational Fluid Dynamics to Compressor Efficiency Improvement J.

More information

Full scale measurements and simulations of the wind speed in the close proximity of the building skin

Full scale measurements and simulations of the wind speed in the close proximity of the building skin Full scale measurements and simulations of the wind speed in the close proximity of the building skin Radoslav Ponechal 1,* and Peter Juras 1 1 University of Zilina, Faculty of Civil Engineering, Department

More information

CYCLE ANALYSIS OF LINEAR COMPRESSORS USING THREE- DIMENSIONAL CFD

CYCLE 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 information

Methods The experiments were carried out in the wind tunnel in the Air physics laboratory at the Engineering Centre Bygholm as shown in figure 1.

Methods The experiments were carried out in the wind tunnel in the Air physics laboratory at the Engineering Centre Bygholm as shown in figure 1. 1 Standardisation of test method for salt spreader: Air flow experiments Report 2: Visualization of airflow patterns by Jan S. Strøm, Consultant Aarhus University, Engineering Centre Bygholm, Test and

More information

Numerical Fluid Analysis of a Variable Geometry Compressor for Use in a Turbocharger

Numerical 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 information

Flow and Mixing in the Liquid between Bubbles

Flow and Mixing in the Liquid between Bubbles Excerpt from the Proceedings of the COMSOL Conference 2009 Boston Flow and Mixing in the Liquid between Bubbles Bruce A. Finlayson, Professor Emeritus of Chemical Engineering Department of Chemical Engineering,

More information

A.J.C. Crespo, J.M. Domínguez, C. Altomare, A. Barreiro, M. Gómez-Gesteira

A.J.C. Crespo, J.M. Domínguez, C. Altomare, A. Barreiro, M. Gómez-Gesteira A.J.C. Crespo, J.M. Domínguez, C. Altomare, A. Barreiro, M. Gómez-Gesteira OUTLINE Oscillating Water Column - What OWC is? - Numerical modelling of OWC SPH functionalities - Wave generation (1 st order

More information

Surrounding buildings and wind pressure distribution on a high rise building

Surrounding buildings and wind pressure distribution on a high rise building Surrounding buildings and wind pressure distribution on a high rise building Conference or Workshop Item Accepted Version Luo, Z. (2008) Surrounding buildings and wind pressure distribution on a high rise

More information

CFD SIMULATIONS OF GAS DISPERSION IN VENTILATED ROOMS

CFD 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 information

Analysis of pressure losses in the diffuser of a control valve

Analysis 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 information

Effect of Inlet Clearance Gap on the Performance of an Industrial Centrifugal Blower with Parallel Wall Volute

Effect 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 information

The effect of back spin on a table tennis ball moving in a viscous fluid.

The effect of back spin on a table tennis ball moving in a viscous fluid. How can planes fly? The phenomenon of lift can be produced in an ideal (non-viscous) fluid by the addition of a free vortex (circulation) around a cylinder in a rectilinear flow stream. This is known as

More information

Numerical investigation of transition between free surface flow and pressurized flow for a circular pipe flowing full upstream

Numerical investigation of transition between free surface flow and pressurized flow for a circular pipe flowing full upstream Numerical investigation of transition between free surface flow and pressurized flow for a circular pipe flowing full upstream Tanjina Afrin 1, Abdul A. Khan 2, Nigel B. Kaye 3 AUTHORS: 1 Assistant Professor,

More information

Aerodynamic Performance of Trains with Different Longitudinal Section Lines under Crosswind

Aerodynamic Performance of Trains with Different Longitudinal Section Lines under Crosswind 2017 2nd International Conference on Industrial Aerodynamics (ICIA 2017) ISBN: 978-1-60595-481-3 Aerodynamic Performance of Trains with Different Longitudinal Section Lines under Crosswind Taizhong Xie

More information

SUMMARY PROBLEMS CAUSED BY BACKFLOW IN PIPE SYSTEMS.

SUMMARY PROBLEMS CAUSED BY BACKFLOW IN PIPE SYSTEMS. Page 1 of 11 SUMMARY There are many problems derived from a reverse flow in a piping system. A solution presented in this paper is the WaStop inline check valve. The paper aims to explain some of the important

More information

CFD Analysis of Giromill Type Vertical Axis Wind Turbine

CFD 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 information

Study on Resistance of Stepped Hull Fitted With Interceptor Plate

Study on Resistance of Stepped Hull Fitted With Interceptor Plate 39 Study on Resistance of Stepped Hull Fitted With Interceptor Plate Muhamad Asyraf bin Abdul Malek, a, and J.Koto, a,b,* a) Department of Aeronautic, Automotive and Ocean Engineering, Faculty of Mechanical

More information

RESIDENTIAL WATER DISTRIBUTION

RESIDENTIAL WATER DISTRIBUTION RESIDENTIAL WATER DISTRIBUTION This case study demonstrates the steady-state simulation of the fresh water (drinking water) reticulation system in a small village. WATER RETICULATION Page1 WATER RETICULATION

More information

CFD Analysis and Experimental Study on Impeller of Centrifugal Pump Alpeshkumar R Patel 1 Neeraj Dubey 2

CFD 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 information

EFFECT OF CORNER CUTOFFS ON FLOW CHARACTERISTICS AROUND A SQUARE CYLINDER

EFFECT OF CORNER CUTOFFS ON FLOW CHARACTERISTICS AROUND A SQUARE CYLINDER EFFECT OF CORNER CUTOFFS ON FLOW CHARACTERISTICS AROUND A SQUARE CYLINDER Yoichi Yamagishi 1, Shigeo Kimura 1, Makoto Oki 2 and Chisa Hatayama 3 ABSTRACT It is known that for a square cylinder subjected

More information

NUMERICAL INVESTIGATION OF AERODYNAMIC CHARACTERISTICS OF NACA AIRFOIL WITH A GURNEY FLAP

NUMERICAL INVESTIGATION OF AERODYNAMIC CHARACTERISTICS OF NACA AIRFOIL WITH A GURNEY FLAP Int. J. Mech. Eng. & Rob. Res. 2012 MasoudJahanmorad Nouri et al., 2012 Research Paper ISSN 2278 0149 www.ijmerr.com Vol. 1, No. 3, October 2012 2012 IJMERR. All Rights Reserved NUMERICAL INVESTIGATION

More information

Transitional Steps Zone in Steeply Sloping Stepped Spillways

Transitional Steps Zone in Steeply Sloping Stepped Spillways Transitional Steps Zone in Steeply Sloping Stepped Spillways Jalal Attari 1 and Mohammad Sarfaraz 2 1- Assistant Professor, Power and Water University of Technology, Iran 2- Graduate Student, Department

More information

Injector Dynamics Assumptions and their Impact on Predicting Cavitation and Performance

Injector 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 information

Cavitation Bubbles in a Starting Submerged Water Jet

Cavitation Bubbles in a Starting Submerged Water Jet CAV21:sessionA7.5 1 Cavitation Bubbles in a Starting Submerged Water Jet K.Nakano, M.Hayakawa, S.Fujikawa and T.Yano Graduate School of Engineering, Hokkaido University, Sapporo, Japan Abstract The behavior

More information

ANALYSES OF THERMAL COMFORT AND INDOOR AIR QUALITY UNDER STRATUM, DISPLACEMENT, AND MIXING VENTILATION SYSTEMS

ANALYSES OF THERMAL COMFORT AND INDOOR AIR QUALITY UNDER STRATUM, DISPLACEMENT, AND MIXING VENTILATION SYSTEMS 3 rd International Conference on Energy Systems and Technologies 16 19 Feb. 2015, Cairo, Egypt ANALYSES OF THERMAL COMFORT AND INDOOR AIR QUALITY UNDER STRATUM, DISPLACEMENT, AND MIXING VENTILATION SYSTEMS

More information

UNIT 15 WATER HAMMER AND SURGE TANKS

UNIT 15 WATER HAMMER AND SURGE TANKS UNT 15 WATER HAMMER AND SURGE TANKS Structure 15.1 ntroduction Objectives 15.2 Water Hammer 15.2.1 Expression for Rise in Pressure 15.3 Rapid Acceleration of Flow 15.4 Surge Tanks 15.5 Summary 15.6 Keywords

More information

Write important assumptions used in derivation of Bernoulli s equation. Apart from an airplane wing, give an example based on Bernoulli s principle

Write important assumptions used in derivation of Bernoulli s equation. Apart from an airplane wing, give an example based on Bernoulli s principle HW#3 Sum07 #1. Answer in 4 to 5 lines in the space provided for each question: (a) A tank partially filled with water has a balloon well below the free surface and anchored to the bottom by a string. The

More information

THE BRIDGE COLLAPSED IN NOVEMBER 1940 AFTER 4 MONTHS OF ITS OPENING TO TRAFFIC!

THE BRIDGE COLLAPSED IN NOVEMBER 1940 AFTER 4 MONTHS OF ITS OPENING TO TRAFFIC! OUTLINE TACOMA NARROWS BRIDGE FLOW REGIME PAST A CYLINDER VORTEX SHEDDING MODES OF VORTEX SHEDDING PARALLEL & OBLIQUE FLOW PAST A SPHERE AND A CUBE SUMMARY TACOMA NARROWS BRIDGE, USA THE BRIDGE COLLAPSED

More information

Numerical Simulations of Bubbling Fluidized Beds

Numerical Simulations of Bubbling Fluidized Beds Numerical Simulations of Bubbling Fluidized Beds A. Busciglio, G. Micale, L.Rizzuti, G. Vella. Università degli Studi di Palermo Dipartimento di Ingegneria Chimica dei Processi e dei Materiali Viale delle

More information

DAIVÕES DAM SPILLWAY: A NOVEL SOLUTION FOR THE STILLING BASIN

DAIVÕES DAM SPILLWAY: A NOVEL SOLUTION FOR THE STILLING BASIN DAIVÕES DAM SPILLWAY: A NOVEL SOLUTION FOR THE STILLING BASIN Elsa Alves *, Felix Hernando and Rafael Chacón * Laboratório Nacional de Engenharia Civil (LNEC) Av. do Brasil, 101, 1700-066 Lisboa, Portugal

More information

This file was downloaded from Telemark Open Research Archive TEORA -

This file was downloaded from Telemark Open Research Archive TEORA - This file was downloaded from Telemark Open Research Archive TEORA - http://teora.hit.no/dspace/ Title: Computational study of fingering phenomenon in heavy oil reservoir with water drive Authors: Wijeratne,

More information

AIRFLOW AND TEMPERATURE FIELD CALCULATIONS FOR WINTER SPORTS FACILITIES

AIRFLOW AND TEMPERATURE FIELD CALCULATIONS FOR WINTER SPORTS FACILITIES AIRFLOW AND TEMPERATURE FIELD CALCULATIONS FOR WINTER SPORTS FACILITIES Andrea Frisque* Stantec Consulting, Vancouver BC V6B6A3, Canada Rowan, Williams, Davies & Irwin (RWDI), Vancouver, BC, V5Z 1K5, Canada**

More information

Effect of Argon Gas Distribution on Fluid Flow in the Mold Using Time-Averaged k-ε Models

Effect of Argon Gas Distribution on Fluid Flow in the Mold Using Time-Averaged k-ε Models Effect of Argon Gas Distribution on Fluid Flow in the Mold Using Time-Averaged k-ε Models B. G. Thomas, T. Shi and L. Zhang Department of Materials Science &. Engineering University of Illinois at Urbana-Champaign

More information

Irrigation &Hydraulics Department lb / ft to kg/lit.

Irrigation &Hydraulics Department lb / ft to kg/lit. CAIRO UNIVERSITY FLUID MECHANICS Faculty of Engineering nd Year CIVIL ENG. Irrigation &Hydraulics Department 010-011 1. FLUID PROPERTIES 1. Identify the dimensions and units for the following engineering

More information

A. M. Dalavi, Mahesh Jadhav, Yasin Shaikh, Avinash Patil (Department of Mechanical Engineering, Symbiosis Institute of Technology, India)

A. M. Dalavi, Mahesh Jadhav, Yasin Shaikh, Avinash Patil (Department of Mechanical Engineering, Symbiosis Institute of Technology, India) IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) ISSN(e) : 2278-1684, ISSN(p) : 2320 334X, PP : 45-49 www.iosrjournals.org Modeling, Optimization & Manufacturing of Vortex Tube and Application

More information

Centre for Offshore Renewable Energy Engineering, School of Energy, Environment and Agrifood, Cranfield University, Cranfield, MK43 0AL, UK 2

Centre for Offshore Renewable Energy Engineering, School of Energy, Environment and Agrifood, Cranfield University, Cranfield, MK43 0AL, UK 2 Fluid Structure Interaction Modelling of A Novel 10MW Vertical-Axis Wind Turbine Rotor Based on Computational Fluid Dynamics and Finite Element Analysis Lin Wang 1*, Athanasios Kolios 1, Pierre-Luc Delafin

More information