Boundary Conditions - Inlet

Size: px
Start display at page:

Download "Boundary Conditions - Inlet"

Transcription

1 Boundary Conditions - Inlet

2 Boundary Conditions Need? What is physical and mathematical significance of a boundary condition? The boundary conditions of any problem is used to define the upper and lower limits of the field variables (albeit in absence of any source or sink). Basically, they are the operating conditions which governs both the micro- and macro behavior of these variables. A suitable choice of boundary conditions is as good as a good test set-up! There are different (combination) of boundary conditions. For example, in a structural simulation, the number of boundary conditions can be varied to ensure the force- and moment balance of the entire system. This can be achieved by applying boundary condition at just one node or at 6 different nodes! Similarly, in any fluid problem, there must be an entry and an exit for the fluid (as an exception buoyancy-driven flow can be omitted for the time being). This most basic condition is termed as Inlet and Outlet boundary conditions in CFD parlance, though the choice of field variables such as velocity, pressure, temperature, mass flow rate, may vary as per problem set-up.

3 Boundary Condition - Inlet Inlet This is the 1 st member of the pair of boundary conditions which are must for any CFD calculations. The primary consideration of an inlet B.C. is to select between the Mass Flow, Static Pressure and Total Pressure based on the actual information available about the operating conditions of the system and robustness of the solver, (the matrix inversion) algorithm which keeps running till solution is achieved. While tempting to use velocity inlet B.C. care needs to be taken to account for change in cross-sectional area when an arc is represented by a set of connected lines. Some other considerations during application of Inlet B.C. is Fully Developed Flow Vs Developing Flow. For example, if you are a beginner learning tips and trick of CFD by trying to simulate HTC and correlating it with Dittus-Boelter equation, make sure that the flow regime is fully developed. Sometimes, the inlet of the problem set-up is moved upstream the actual location to get the flow a bit developed. Specification of turbulence parameters (turbulent kinetic energy, TKE and turbulent eddy dissipation, TED) should be based on actual measurement of as far as possible. When there are any source of momentum such as centrifugal fan in

4 Boundary Condition - Inlet the computation domain or sharp edges, the overall result gets affected by the turbulence set at the inlet. Followings are the method to specify turbulence: 1. Specify TKE [m 2 /s 2 ] and TED [m 2 /s 3 ] explicitly 2. Turbulent Intensity [%] and Turbulent Viscosity Ratio (TVR) [-] 3. Hydraulic Diameter [m] and Turbulent Intensity [%] 4. Turbulent Intensity [%] and Length Scale [m] These requirements on turbulent parameters further depends on flow type: external or internal External Flow Internal Flow Length Scale: 0.07 x L ~ Hydraulic Diam. Turbulent Intensity: Based on upstream condition 0.16 x Re -1/8 Turbulent Viscosity Ratio: 1 < TVR < 10 1 < TVR < 10 L: For external flows, it is typical length scales along the flow direction

5 Boundary Condition - Classification Dirichlet Boundary Condition: When value of field variable is known on the boundary Newmann Boundary Condition: When derivative of field variable is known on the boundary Mixed: A combination of Dirichlet and Newmann.

6 Boundary Condition - CFX CFX Recommendation: Behaviour Inlet Outlet Most Robust Velocity / Mass Flow Static Pressure Robust Total Pressure Velocity / Mass Flow Sensitive to Guess Total Pressure Static Pressure Very Unreliable Static Pressure Static Pressure Not Possible Any Total Pressure

7 Boundary Condition - Fluent Fluent B.C. Combinations for Inlet & Outlet Behaviour Inlet Outlet Most Robust Mass Flow Inlet / Velocity Inlet Static Pressure Robust Mass Flow Inlet / Velocity Inlet Outflow / Outlet-vent Sensitive to Guess Total Pressure Static Pressure [With Target m] Only for Incompressible Velocity Inlet Outflow Not Available Any Mass Flow Outlet Not for Compressible Velocity Inlet Any

Tutorial for the heated pipe with constant fluid properties in STAR-CCM+

Tutorial for the heated pipe with constant fluid properties in STAR-CCM+ Tutorial for the heated pipe with constant fluid properties in STAR-CCM+ For performing this tutorial, it is necessary to have already studied the tutorial on the upward bend. In fact, after getting abilities

More information

Numerical solution of the flow in the gas transfer system of an industrial unit

Numerical solution of the flow in the gas transfer system of an industrial unit Technical Journal of Engineering and Applied Sciences Available online at www.tjeas.com 213 TJEAS Journal-213-3-24/3688-3694 ISSN 251-853 213 TJEAS Numerical solution of the flow in the gas transfer system

More information

COMPUTATIONAL SIMULATION OF THE FLOW PAST AN AIRFOIL FOR AN UNMANNED AERIAL VEHICLE

COMPUTATIONAL SIMULATION OF THE FLOW PAST AN AIRFOIL FOR AN UNMANNED AERIAL VEHICLE COMPUTATIONAL SIMULATION OF THE FLOW PAST AN AIRFOIL FOR AN UNMANNED AERIAL VEHICLE L. Velázquez-Araque 1 and J. Nožička 2 1 Division of Thermal fluids, Department of Mechanical Engineering, National University

More information

CHAPTER 7 NUMERICAL MODELLING OF A SPIRAL HEAT EXCHANGER USING CFD TECHNIQUE

CHAPTER 7 NUMERICAL MODELLING OF A SPIRAL HEAT EXCHANGER USING CFD TECHNIQUE CHAPTER 7 NUMERICAL MODELLING OF A SPIRAL HEAT EXCHANGER USING CFD TECHNIQUE In this chapter, the governing equations for the proposed numerical model with discretisation methods are presented. Spiral

More information

Calculating equation coefficients

Calculating equation coefficients Fluid flow Calculating equation coefficients Construction Conservation Equation Surface Conservation Equation Fluid Conservation Equation needs flow estimation needs radiation and convection estimation

More information

FACULTY OF CHEMICAL & ENERGY ENGINEERING FLUID MECHANICS LABORATORY TITLE OF EXPERIMENT: MINOR LOSSES IN PIPE (E4)

FACULTY OF CHEMICAL & ENERGY ENGINEERING FLUID MECHANICS LABORATORY TITLE OF EXPERIMENT: MINOR LOSSES IN PIPE (E4) FACULTY OF CHEMICAL & ENERGY ENGINEERING FLUID MECHANICS LABORATORY TITLE OF EXPERIMENT: MINOR LOSSES IN PIPE (E4) 1 1.0 Objectives The objective of this experiment is to calculate loss coefficient (K

More information

CFD and Thermal Stress Analysis of Helium-Cooled Divertor Concepts

CFD and Thermal Stress Analysis of Helium-Cooled Divertor Concepts CFD and Thermal Stress Analysis of Helium-Cooled Divertor Concepts Presented by: X.R. Wang Contributors: R. Raffray and S. Malang University of California, San Diego ARIES-TNS Meeting Georgia Institute

More information

AN UNCERTAINTY ESTIMATION EXAMPLE FOR BACKWARD FACING STEP CFD SIMULATION. Abstract

AN UNCERTAINTY ESTIMATION EXAMPLE FOR BACKWARD FACING STEP CFD SIMULATION. Abstract nd Workshop on CFD Uncertainty Analysis - Lisbon, 19th and 0th October 006 AN UNCERTAINTY ESTIMATION EXAMPLE FOR BACKWARD FACING STEP CFD SIMULATION Alfredo Iranzo 1, Jesús Valle, Ignacio Trejo 3, Jerónimo

More information

Express Introductory Training in ANSYS Fluent Lecture 2 Boundary Conditions & Solver Settings

Express Introductory Training in ANSYS Fluent Lecture 2 Boundary Conditions & Solver Settings Express Introductory Training in ANSYS Fluent Lecture 2 Boundary Conditions & Solver Settings Dimitrios Sofialidis Technical Manager, SimTec Ltd. Mechanical Engineer, PhD PRACE Autumn School 2013 - Industry

More information

CFD ANALYSIS OF CD NOZZLE AND EFFECT OF NOZZLE PRESSURE RATIO ON PRESSURE AND VELOCITY FOR SUDDENLY EXPANDED FLOWS. Kuala Lumpur, Malaysia

CFD ANALYSIS OF CD NOZZLE AND EFFECT OF NOZZLE PRESSURE RATIO ON PRESSURE AND VELOCITY FOR SUDDENLY EXPANDED FLOWS. Kuala Lumpur, Malaysia International Journal of Mechanical and Production Engineering Research and Development (IJMPERD) ISSN(P): 2249-6890; ISSN(E): 2249-8001 Vol. 8, Issue 3, Jun 2018, 1147-1158 TJPRC Pvt. Ltd. CFD ANALYSIS

More information

Performance characteristics of turbo blower in a refuse collecting system according to operation conditions

Performance characteristics of turbo blower in a refuse collecting system according to operation conditions Journal of Mechanical Science and Technology 22 (2008) 1896~1901 Journal of Mechanical Science and Technology www.springerlink.com/content/1738-494x DOI 10.1007/s12206-008-0729-6 Performance characteristics

More information

Investigation of Flow Profile in Open Channels using CFD

Investigation of Flow Profile in Open Channels using CFD Investigation of Flow Profile in Open Channels using CFD B. K. Gandhi 1, H.K. Verma 2 and Boby Abraham 3 Abstract Accuracy of the efficiency measurement of a hydro-electric generating unit depends on the

More information

Explicit algebraic Reynolds stress models for internal flows

Explicit algebraic Reynolds stress models for internal flows 5. Double Circular Arc (DCA) cascade blade flow, problem statement The second test case deals with a DCA compressor cascade, which is considered a severe challenge for the CFD codes, due to the presence

More information

Nodalization. The student should be able to develop, with justification, a node-link diagram given a thermalhydraulic system.

Nodalization. The student should be able to develop, with justification, a node-link diagram given a thermalhydraulic system. Nodalization 3-1 Chapter 3 Nodalization 3.1 Introduction 3.1.1 Chapter content This chapter focusses on establishing a rationale for, and the setting up of, the geometric representation of thermalhydraulic

More information

Advances in Environmental Biology, 8(10) June 2014, Pages: AENSI Journals Advances in Environmental Biology ISSN: EISSN:

Advances in Environmental Biology, 8(10) June 2014, Pages: AENSI Journals Advances in Environmental Biology ISSN: EISSN: AENSI Journals Advances in Environmental Biology ISSN:1995-0756 EISSN: 1998-1066 Journal home page: http://www.aensiweb.com/aeb.html PAIDEffect of Sudden Area Expansion on Formation of Cross-Waves in Downstream

More information

Prediction of Performance Characteristics of Orifice Plate Assembly for Non-Standard Conditions Using CFD

Prediction of Performance Characteristics of Orifice Plate Assembly for Non-Standard Conditions Using CFD International Journal of Engineering and Technical Research (IJETR) ISSN: 2321-0869, Volume-3, Issue-5, May 2015 Prediction of Performance Characteristics of Orifice Plate Assembly for Non-Standard Conditions

More information

INTERNATIONAL JOURNAL OF SCIENTIFIC & TECHNOLOGY RESEARCH VOLUME 5, ISSUE 09, SEPTEMBER 2016 ISSN

INTERNATIONAL JOURNAL OF SCIENTIFIC & TECHNOLOGY RESEARCH VOLUME 5, ISSUE 09, SEPTEMBER 2016 ISSN Numerical Analysis Of Heat Transfer And Fluid Flow Characteristics In Different V-Shaped Roughness Elements On The Absorber Plate Of Solar Air Heater Duct Jitesh Rana, Anshuman Silori, Rohan Ramola Abstract:

More information

COMPUTATIONAL ANALYSIS OF LAMINAR FORCED CONVECTION IN RECTANGULAR ENCLOSURES OF DIFFERENT ASPECT RATIOS

COMPUTATIONAL ANALYSIS OF LAMINAR FORCED CONVECTION IN RECTANGULAR ENCLOSURES OF DIFFERENT ASPECT RATIOS HEFAT214 1 th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics 14 16 July 214 Orlando, Florida COMPUTATIONAL ANALYSIS OF LAMINAR FORCED CONVECTION IN RECTANGULAR ENCLOSURES

More information

CFD SIMULATIONS OF THE SPENT FUEL POOL IN THE LOSS OF COOLANT ACCIDENT

CFD SIMULATIONS OF THE SPENT FUEL POOL IN THE LOSS OF COOLANT ACCIDENT HEFAT2012 9 th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics 16 18 July 2012 Malta CFD SIMULATIONS OF THE SPENT FUEL POOL IN THE LOSS OF COOLANT ACCIDENT Lin Y.T., Chiu

More information

PART 1B EXPERIMENTAL ENGINEERING. SUBJECT: FLUID MECHANICS & HEAT TRANSFER LOCATION: HYDRAULICS LAB (Gnd Floor Inglis Bldg) BOUNDARY LAYERS AND DRAG

PART 1B EXPERIMENTAL ENGINEERING. SUBJECT: FLUID MECHANICS & HEAT TRANSFER LOCATION: HYDRAULICS LAB (Gnd Floor Inglis Bldg) BOUNDARY LAYERS AND DRAG 1 PART 1B EXPERIMENTAL ENGINEERING SUBJECT: FLUID MECHANICS & HEAT TRANSFER LOCATION: HYDRAULICS LAB (Gnd Floor Inglis Bldg) EXPERIMENT T3 (LONG) BOUNDARY LAYERS AND DRAG OBJECTIVES a) To measure the velocity

More information

Initial and Boundary Conditions

Initial and Boundary Conditions Initial and Boundary Conditions Initial- and boundary conditions are needed For a steady problems correct initial conditions is important to reduce computational time and reach convergence Boundary conditions

More information

Stratified scavenging in two-stroke engines using OpenFOAM

Stratified scavenging in two-stroke engines using OpenFOAM Stratified scavenging in two-stroke engines using OpenFOAM Håkan Nilsson, Chalmers / Applied Mechanics / Fluid Dynamics 1 Acknowledgements I would like to thank Associate Professor Håkan Nilsson at the

More information

Manhar Dhanak Florida Atlantic University Graduate Student: Zaqie Reza

Manhar Dhanak Florida Atlantic University Graduate Student: Zaqie Reza REPRESENTING PRESENCE OF SUBSURFACE CURRENT TURBINES IN OCEAN MODELS Manhar Dhanak Florida Atlantic University Graduate Student: Zaqie Reza 1 Momentum Equations 2 Effect of inclusion of Coriolis force

More information

3. FORMS OF GOVERNING EQUATIONS IN CFD

3. FORMS OF GOVERNING EQUATIONS IN CFD 3. FORMS OF GOVERNING EQUATIONS IN CFD 3.1. Governing and model equations in CFD Fluid flows are governed by the Navier-Stokes equations (N-S), which simpler, inviscid, form is the Euler equations. For

More information

NUMERICAL SIMULATION OF STATIC INFLOW DISTORTION ON AN AXIAL FLOW FAN

NUMERICAL SIMULATION OF STATIC INFLOW DISTORTION ON AN AXIAL FLOW FAN Int. J. Mech. Eng. & Rob. Res. 2014 Arun Raj S and Pal Pandian P, 2014 Research Paper ISSN 2278 0149 www.ijmerr.com Vol. 3, No. 2, April 2014 2014 IJMERR. All Rights Reserved NUMERICAL SIMULATION OF STATIC

More information

NUMERICAL SIMULATION ON RECTANGULAR CONVERGENT AND DIVERGENT RIBBED CHANNELS

NUMERICAL SIMULATION ON RECTANGULAR CONVERGENT AND DIVERGENT RIBBED CHANNELS NUMERICAL SIMULATION ON RECTANGULAR CONVERGENT AND DIVERGENT RIBBED CHANNELS K. Sivakumar 1, E. Natarajan and N. Kulasekharan 3 1 Valliammai Engineering College, Chennai, India Institute of Energy Studies,

More information

CFD Analysis for Thermal Behavior of Turbulent Channel Flow of Different Geometry of Bottom Plate

CFD Analysis for Thermal Behavior of Turbulent Channel Flow of Different Geometry of Bottom Plate International Journal Of Engineering Research And Development e-issn: 2278-067X, p-issn: 2278-800X, www.ijerd.com Volume 13, Issue 9 (September 2017), PP.12-19 CFD Analysis for Thermal Behavior of Turbulent

More information

Wall treatments and wall functions

Wall treatments and wall functions Wall treatments and wall functions A wall treatment is the set of near-wall modelling assumptions for each turbulence model. Three types of wall treatment are provided in FLUENT, although all three might

More information

Analysis of Flow over a Convertible

Analysis of Flow over a Convertible 69 Analysis of Flow over a Convertible Aniket A Kulkarni 1, S V Satish 2 and V Saravanan 3 1 PES Institute of Technology, India, aniket260919902@gmail.com 2 PES Institute of Technology, India, svsatish@pes.edu

More information

A Computational Fluid Dynamics Investigation of Solar Air Heater Duct Provided with Inclined Circular Ribs as Artificial Roughness

A Computational Fluid Dynamics Investigation of Solar Air Heater Duct Provided with Inclined Circular Ribs as Artificial Roughness Bonfring International Journal of Industrial Engineering and Management Science, Vol. 4, No. 3, August 2014 115 A Computational Fluid Dynamics Investigation of Solar Air Heater Duct Provided with Inclined

More information

A Computational Investigation of a Turbulent Flow Over a Backward Facing Step with OpenFOAM

A Computational Investigation of a Turbulent Flow Over a Backward Facing Step with OpenFOAM 206 9th International Conference on Developments in esystems Engineering A Computational Investigation of a Turbulent Flow Over a Backward Facing Step with OpenFOAM Hayder Al-Jelawy, Stefan Kaczmarczyk

More information

Effect of radius ratio on pressure drop across a 90 bend for high concentration coal ash slurries

Effect of radius ratio on pressure drop across a 90 bend for high concentration coal ash slurries This paper is part of the Proceedings of the 11 International Conference th on Engineering Sciences (AFM 2016) www.witconferences.com Effect of radius ratio on pressure drop across a 90 bend for high concentration

More information

Project #1 Internal flow with thermal convection

Project #1 Internal flow with thermal convection Project #1 Internal flow with thermal convection MAE 494/598, Fall 2017, Project 1 (20 points) Hard copy of report is due at the start of class on the due date. The rules on collaboration will be released

More information

Numerical investigation of swirl flow inside a supersonic nozzle

Numerical investigation of swirl flow inside a supersonic nozzle Advances in Fluid Mechanics IX 131 Numerical investigation of swirl flow inside a supersonic nozzle E. Eslamian, H. Shirvani & A. Shirvani Faculty of Science and Technology, Anglia Ruskin University, UK

More information

Investigation of Jet Impingement on Flat Plate Using Triangular and Trapezoid Vortex Generators

Investigation of Jet Impingement on Flat Plate Using Triangular and Trapezoid Vortex Generators ISSN 2395-1621 Investigation of Jet Impingement on Flat Plate Using Triangular and Trapezoid Vortex Generators #1 Sonali S Nagawade, #2 Prof. S Y Bhosale, #3 Prof. N K Chougule 1 Sonalinagawade1@gmail.com

More information

Numerical investigation of the buoyancy-induced flow field and heat transfer inside solar chimneys

Numerical investigation of the buoyancy-induced flow field and heat transfer inside solar chimneys Numerical investigation of the buoyancy-induced flow field and heat transfer inside solar chimneys E. BACHAROUDIS, M.GR. VRACHOPOULOS, M.K. KOUKOU, A.E. FILIOS Mechanical Engineering Department, Environmental

More information

Performance of Elliptical Pin Fin Heat Exchanger with Three Elliptical Perforations

Performance of Elliptical Pin Fin Heat Exchanger with Three Elliptical Perforations www.cfdl.issres.net Vol. 3 (2) June 2011 Performance of Elliptical Pin Fin Heat Exchanger with Three Elliptical Perforations Monoj Baruah 1, Anupam Dewan 2c and P. Mahanta 1 1 Department of Mechanical

More information

Application of COMSOL Multiphysics in Transport Phenomena Educational Processes

Application of COMSOL Multiphysics in Transport Phenomena Educational Processes Application of COMSOL Multiphysics in Transport Phenomena Educational Processes M. Vasilev, P. Sharma and P. L. Mills * Department of Chemical and Natural Gas Engineering, Texas A&M University-Kingsville,

More information

DESIGN AND CFD ANALYSIS OF A CENTRIFUGAL PUMP

DESIGN AND CFD ANALYSIS OF A CENTRIFUGAL PUMP DESIGN AND CFD ANALYSIS OF A CENTRIFUGAL PUMP 1 CH.YADAGIRI, 2 P.VIJAYANAND 1 Pg Scholar, Department of MECH, Holymary Institute of Technology, Ranga Reddy, Telangana, India. 2 Assistant Professor, Department

More information

"C:\Program Files\ANSYS Inc\v190\CFX\bin\perllib\cfx5solve.pl" -batch -ccl runinput.ccl -fullname "Fluid Flow CFX_002"

C:\Program Files\ANSYS Inc\v190\CFX\bin\perllib\cfx5solve.pl -batch -ccl runinput.ccl -fullname Fluid Flow CFX_002 This run of the CFX Release 19.0 Solver started at 19:06:17 on 05 Jun 2018 by user ltval on DESKTOP-JCG0747 (intel_xeon64.sse2_winnt) using the command: "C:\Program Files\ANSYS Inc\v190\CFX\bin\perllib\cfx5solve.pl"

More information

Computational fluid dynamics study of flow depth in an open Venturi channel for Newtonian fluid

Computational fluid dynamics study of flow depth in an open Venturi channel for Newtonian fluid Computational fluid dynamics study of flow depth in an open Venturi channel for Newtonian fluid Prasanna Welahettige 1, Bernt Lie 1, Knut Vaagsaether 1 1 Department of Process, Energy and Environmental

More information

SIMULATION OF THERMAL CHARACTERISTICS OF RADIATORS USING A POROUS MODEL. YETSAN Auto Radiator Co. Inc Çorum, Turkey NOMENCLATURE

SIMULATION OF THERMAL CHARACTERISTICS OF RADIATORS USING A POROUS MODEL. YETSAN Auto Radiator Co. Inc Çorum, Turkey NOMENCLATURE Proceedings of CONV-14: Int. Symp. on ConvectiveHeatandMass Transfer June8 13, 2014, Turkey CONV-14 176 SIMULATION OF THERMAL CHARACTERISTICS OF RADIATORS USING A POROUS MODEL Kadir G. Güler 1,2 and BarbarosÇetin

More information

Civil aeroengines for subsonic cruise have convergent nozzles (page 83):

Civil aeroengines for subsonic cruise have convergent nozzles (page 83): 120 Civil aeroengines for subsonic cruise have convergent nozzles (page 83): Choked convergent nozzle must be sonic at the exit A N. Consequently, the pressure (p 19 ) at the nozzle exit will be above

More information

Numerical Analysis of Tube-Fin Heat Exchanger using Fluent

Numerical Analysis of Tube-Fin Heat Exchanger using Fluent Numerical Analysis of Tube-Fin Heat Exchanger using Fluent M. V. Ghori & R. K. Kirar Patel college of Science and Technology, Rajiv Gandhi Proudyogiki Vishwavidhyalaya, Ratibad, Bhopal- 462036, India E-mail

More information

Numerical Simulation of Turbulent Flow inside the Electrostatic Precipitator of a Power Plant

Numerical Simulation of Turbulent Flow inside the Electrostatic Precipitator of a Power Plant Numerical Simulation of Turbulent Flow inside the Electrostatic Precipitator of a Power Plant S.M.E. Haque 1*, M.G. Rasul 2, A. Deev 1, M.M.K. Khan 2 and J. Zhou 3 1 Process Engineering & Light Metals

More information

vector H. If O is the point about which moments are desired, the angular moment about O is given:

vector H. If O is the point about which moments are desired, the angular moment about O is given: The angular momentum A control volume analysis can be applied to the angular momentum, by letting B equal to angularmomentum vector H. If O is the point about which moments are desired, the angular moment

More information

EFFECT OF FORCED ROTATING VANELESS DIFFUSERS ON CENTRIFUGAL COMPRESSOR STAGE PERFORMANCE

EFFECT OF FORCED ROTATING VANELESS DIFFUSERS ON CENTRIFUGAL COMPRESSOR STAGE PERFORMANCE Journal of Engineering Science and Technology Vol. 6, No. 5 (2011) 558-574 School of Engineering, Taylor s University EFFECT OF FORCED ROTATING VANELESS DIFFUSERS ON CENTRIFUGAL COMPRESSOR STAGE PERFORMANCE

More information

Performance Investigation of High Pressure Ratio Centrifugal Compressor using CFD

Performance Investigation of High Pressure Ratio Centrifugal Compressor using CFD International Journal of Ignited Minds (IJIMIINDS) Performance Investigation of High Pressure Ratio Centrifugal Compressor using CFD Manjunath DC a, Rajesh b, Dr.V.M.Kulkarni c a PG student, Department

More information

Flow analysis in centrifugal compressor vaneless diffusers

Flow analysis in centrifugal compressor vaneless diffusers 348 Journal of Scientific & Industrial Research J SCI IND RES VOL 67 MAY 2008 Vol. 67, May 2008, pp. 348-354 Flow analysis in centrifugal compressor vaneless diffusers Ozturk Tatar, Adnan Ozturk and Ali

More information

Numerical Investigation of Convective Heat Transfer in Pin Fin Type Heat Sink used for Led Application by using CFD

Numerical Investigation of Convective Heat Transfer in Pin Fin Type Heat Sink used for Led Application by using CFD GRD Journals- Global Research and Development Journal for Engineering Volume 1 Issue 8 July 2016 ISSN: 2455-5703 Numerical Investigation of Convective Heat Transfer in Pin Fin Type Heat Sink used for Led

More information

Numerical Investigation of Secondary Flow In An Axial Flow Compressor Cascade

Numerical Investigation of Secondary Flow In An Axial Flow Compressor Cascade Numerical Investigation of Secondary Flow In An Axial Flow Compressor Cascade 1 T. Suthakar, 2 Akash Dhurandhar 1 Associate Professor, 2 M.Tech. Scholar, Department of Mechanical Engineering National Institute

More information

International Journal of Advanced Engineering Technology E-ISSN

International Journal of Advanced Engineering Technology E-ISSN Research Article EFFECT OF ROUGHNESS ELEMENT PITCH ON HEAT TRANSFER AND FRICTION CHARACTERISTICS OF ARTIFICIALLY ROUGHENED SOLAR AIR HEATER DUCT Aman Soi*, Ranjit Singh, Brij Bhushan Address for Correspondence

More information

150A Review Session 2/13/2014 Fluid Statics. Pressure acts in all directions, normal to the surrounding surfaces

150A Review Session 2/13/2014 Fluid Statics. Pressure acts in all directions, normal to the surrounding surfaces Fluid Statics Pressure acts in all directions, normal to the surrounding surfaces or Whenever a pressure difference is the driving force, use gauge pressure o Bernoulli equation o Momentum balance with

More information

Numerical investigation on the effect of inlet conditions on the oblique shock system in a high-speed wind tunnel

Numerical investigation on the effect of inlet conditions on the oblique shock system in a high-speed wind tunnel American Journal of Physics and Applications 2013; 1(3): 91-98 Published online November 30, 2013 (http:// www.sciencepublishinggroup.com/j/ajpa) doi: 10.11648/j.ajpa.20130103.16 Numerical investigation

More information

Best Practice Guidelines for Combustion Modeling. Raphael David A. Bacchi, ESSS

Best Practice Guidelines for Combustion Modeling. Raphael David A. Bacchi, ESSS Best Practice Guidelines for Combustion Modeling Raphael David A. Bacchi, ESSS PRESENTATION TOPICS Introduction; Combustion Phenomenology; Combustion Modeling; Reaction Mechanism; Radiation; Case Studies;

More information

ASSESSMENT OF DESIGN METHODOLOGY AND THREE DIMENSIONAL NUMERICAL (CFD) ANALYSIS OF CENTRIFUGAL BLOWER

ASSESSMENT OF DESIGN METHODOLOGY AND THREE DIMENSIONAL NUMERICAL (CFD) ANALYSIS OF CENTRIFUGAL BLOWER ASSESSMENT OF DESIGN METHODOLOGY AND THREE DIMENSIONAL NUMERICAL (CFD) ANALYSIS OF CENTRIFUGAL BLOWER D. R. Chaudhari 1, H. N. Patel 2 1,2 Mechanical Department, Government Engineering College Dahod, (India)

More information

Computational Fluid Dynamic (CFD) Analysis of Gas and Liquid Flow Through a Modular Sample System

Computational Fluid Dynamic (CFD) Analysis of Gas and Liquid Flow Through a Modular Sample System Computational Fluid Dynamic (CFD) Analysis of Gas and Liquid Flow Through a Modular Sample System Tony Y. Bougebrayel, PE, PhD John J. Wawrowski Swagelok Solon, Ohio IFPAC 2003 Scottsdale, Az January 21-24,

More information

CFD as a Tool for Thermal Comfort Assessment

CFD as a Tool for Thermal Comfort Assessment CFD as a Tool for Thermal Comfort Assessment Dimitrios Koubogiannis dkoubog@teiath.gr G. Tsimperoudis, E. Karvelas Department of Energy Technology Engineering Technological Educational Institute of Athens

More information

I. INTRODUCTION. JMESTN

I. INTRODUCTION.   JMESTN Numerical Study Of Incompressible Flow Characteristics Through Butterfly Valve H. F. Elbakhshawangy 1, O. S. Abd El-Kawi 1 and H. H. Sarhan 2 (1): Reactors department, Atomic Energy Authority of Egypt,

More information

Numerical analysis of fluid flow and heat transfer in 2D sinusoidal wavy channel

Numerical analysis of fluid flow and heat transfer in 2D sinusoidal wavy channel Numerical analysis of fluid flow and heat transfer in 2D sinusoidal wavy channel Arunanshu Chakravarty 1* 1 CTU in Prague, Faculty of Mechanical Engineering, Department of Process Engineering,Technická

More information

Computational Fluid Dynamics Based Analysis of Angled Rib Roughened Solar Air Heater Duct

Computational Fluid Dynamics Based Analysis of Angled Rib Roughened Solar Air Heater Duct Research Article International Journal of Thermal Technologies ISSN 2277-4114 2013 INPRESSCO. All Rights Reserved. Available at http://inpressco.com/category/ijtt Computational Fluid Dynamics Based Analysis

More information

Axial length impact on high-speed centrifugal compressor flow

Axial length impact on high-speed centrifugal compressor flow Fluid Structure Interaction VII 263 Axial length impact on high-speed centrifugal compressor flow P. Le Sausse 1,2,P.Fabrie 1 & D. Arnou 2 1 Université de Bordeaux, IPB, UMR5251, ENSEIRB-MATMECA, Talence,

More information

Chapter 3. CFD Analysis of Radiator

Chapter 3. CFD Analysis of Radiator Chapter 3 CFD Analysis of Radiator 3.1 COMPUTATIONAL FLUID DYNAMICS MODELING Computational fluid dynamics modeling was developed to predict the characteristics and performance of flow systems. Overall

More information

Model Studies on Slag-Metal Entrainment in Gas Stirred Ladles

Model Studies on Slag-Metal Entrainment in Gas Stirred Ladles Model Studies on Slag-Metal Entrainment in Gas Stirred Ladles Anand Senguttuvan Supervisor Gordon A Irons 1 Approach to Simulate Slag Metal Entrainment using Computational Fluid Dynamics Introduction &

More information

Mechanical Engineering Research Journal NUMERICAL MODELING OF TURBULENT FLOW THROUGH BEND PIPES

Mechanical Engineering Research Journal NUMERICAL MODELING OF TURBULENT FLOW THROUGH BEND PIPES Dept. of Mech. Eng. CUET Published Online April 17 (http://www.cuet.ac.bd/merj/index.html) Mechanical Engineering Research Journal Vol.1, pp. 14-19, 16 M E R J ISSN: 199-5491 NUMERICAL MODELING OF TURBULENT

More information

NUMERICAL AND WIND TUNNEL INVESTIGATION ON AERODYNAMIC COEFFICIENTS OF A THREE BLADED SAVONIUS WIND TURBINE WITH AND WITHOUT OVERLAP BETWEEN BLADES

NUMERICAL AND WIND TUNNEL INVESTIGATION ON AERODYNAMIC COEFFICIENTS OF A THREE BLADED SAVONIUS WIND TURBINE WITH AND WITHOUT OVERLAP BETWEEN BLADES NUMERICAL AND WIND TUNNEL INVESTIGATION ON AERODYNAMIC COEFFICIENTS OF A THREE BLADED SAVONIUS WIND TURBINE WITH AND WITHOUT OVERLAP BETWEEN BLADES Mosfequr Rahman, Khandakar N. Morshed 2, Mahbub K. Ahmed

More information

Applied Fluid Mechanics

Applied 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 information

Analysis of flow characteristics of a cam rotor pump

Analysis of flow characteristics of a cam rotor pump IOP Conference Series: Materials Science and Engineering OPEN ACCESS Analysis of flow characteristics of a cam rotor pump To cite this article: Y Y Liu et al 2013 IOP Conf. Ser.: Mater. Sci. Eng. 52 032023

More information

Principles of Convection

Principles of Convection Principles of Convection Point Conduction & convection are similar both require the presence of a material medium. But convection requires the presence of fluid motion. Heat transfer through the: Solid

More information

CFD STUDIES IN THE PREDICTION OF THERMAL STRIPING IN AN LMFBR

CFD STUDIES IN THE PREDICTION OF THERMAL STRIPING IN AN LMFBR CFD STUDIES IN THE PREDICTION OF THERMAL STRIPING IN AN LMFBR K. Velusamy, K. Natesan, P. Selvaraj, P. Chellapandi, S. C. Chetal, T. Sundararajan* and S. Suyambazhahan* Nuclear Engineering Group Indira

More information

Effects of inlet radius and bell mouth radius on flow rate and sound quality of centrifugal blower

Effects of inlet radius and bell mouth radius on flow rate and sound quality of centrifugal blower Journal of Mechanical Science and Technology 26 (5) (2012) 1531~1538 www.springerlink.com/content/1738-494x DOI 10.1007/s12206-012-0311-0 Effects of inlet radius and bell mouth radius on flow rate and

More information

Numerical Heat Transfer Study of Turbulent Square Duct Flow through W-Type Turbulators

Numerical Heat Transfer Study of Turbulent Square Duct Flow through W-Type Turbulators search Article International Journal of Thermal Technologies E-ISSN 2277 4114 214 INPRESSCO, All Rights served Available at http://inpressco.com/category/ijtt/ merical Heat Transfer Study of Turbulent

More information

Flow characteristics of curved ducts

Flow characteristics of curved ducts Applied and Computational Mechanics 1 (007) 55-64 Flow characteristics of curved ducts P. Rudolf a *, M. Desová a a Faculty of Mechanical Engineering, Brno University of Technology,Technická,616 69 Brno,

More information

Objectives. Conservation of mass principle: Mass Equation The Bernoulli equation Conservation of energy principle: Energy equation

Objectives. Conservation of mass principle: Mass Equation The Bernoulli equation Conservation of energy principle: Energy equation Objectives Conservation of mass principle: Mass Equation The Bernoulli equation Conservation of energy principle: Energy equation Conservation of Mass Conservation of Mass Mass, like energy, is a conserved

More information

Numerical prediction of pressure loss of fluid in a T-junction

Numerical prediction of pressure loss of fluid in a T-junction INTERNATIONAL JOURNAL OF ENERGY AND ENVIRONMENT Volume 4, Issue, 03 pp.53-64 Journal homepage: www.ijee.ieefoundation.org Numerical prediction of pressure loss of fluid in a T-junction Mohammed Abdulwahhab,

More information

Lecture 22. Mechanical Energy Balance

Lecture 22. Mechanical Energy Balance Lecture 22 Mechanical Energy Balance Contents Exercise 1 Exercise 2 Exercise 3 Key Words: Fluid flow, Macroscopic Balance, Frictional Losses, Turbulent Flow Exercise 1 It is proposed to install a fan to

More information

Experimental and CFD analysis of flow through venturimeter to determine the coefficient of discharge

Experimental and CFD analysis of flow through venturimeter to determine the coefficient of discharge Experimental and CFD analysis of flow through venturimeter to determine the coefficient of discharge Nikhil Tamhankar Amar Pandhare Ashwinkumar Joglekar Vaibhav Bansode Abstract- The pressure distribution

More information

Ejector Pump CFD Model Validation and Performance Improvement Studies

Ejector Pump CFD Model Validation and Performance Improvement Studies Journal of Scientific & Industrial Research Vol. 77, June 2018, pp. 353-358 Ejector Pump CFD Model Validation and Performance Improvement Studies B H Arun 1, J Vyas 2 *, B M Gopalsamy 2 and M Chimmat 2

More information

FE Exam Fluids Review October 23, Important Concepts

FE Exam Fluids Review October 23, Important Concepts FE Exam Fluids Review October 3, 013 mportant Concepts Density, specific volume, specific weight, specific gravity (Water 1000 kg/m^3, Air 1. kg/m^3) Meaning & Symbols? Stress, Pressure, Viscosity; Meaning

More information

A numerical study of heat transfer and fluid flow over an in-line tube bank

A numerical study of heat transfer and fluid flow over an in-line tube bank Fluid Structure Interaction VI 295 A numerical study of heat transfer and fluid flow over an in-line tube bank Z. S. Abdel-Rehim Mechanical Engineering Department, National Research Center, Egypt Abstract

More information

Flow-Induced Vibration Modeling

Flow-Induced Vibration Modeling Flow-Induced Vibration Modeling Bin Zhu, Hector H. Mireles, and Aqib Qureshi Baker Hughes Abstract: The current work pertains to a re-closeable annular flow valve oil completion tool (X- AFV) with high

More information

Lesson 37 Transmission Of Air In Air Conditioning Ducts

Lesson 37 Transmission Of Air In Air Conditioning Ducts Lesson 37 Transmission Of Air In Air Conditioning Ducts Version 1 ME, IIT Kharagpur 1 The specific objectives of this chapter are to: 1. Describe an Air Handling Unit (AHU) and its functions (Section 37.1).

More information

PARAMETRIC STUDY PERFORMANCE OF A CENTRIFUGAL PUMP BASED ON SIMPLE AND DOUBLE-ARC BLADE DESIGN METHODS

PARAMETRIC STUDY PERFORMANCE OF A CENTRIFUGAL PUMP BASED ON SIMPLE AND DOUBLE-ARC BLADE DESIGN METHODS 3 rd International Conference on Experiments/Process/System Modeling/Simulation & Optimization 3 rd IC-EpsMsO Athens, 8- July, 2009 IC-EpsMsO PARAMETRIC STUDY PERFORMANCE OF A CENTRIFUGAL PUMP BASED ON

More information

COMPUTATIONAL FLOW ANALYSIS THROUGH A DOUBLE-SUCTION IMPELLER OF A CENTRIFUGAL PUMP

COMPUTATIONAL FLOW ANALYSIS THROUGH A DOUBLE-SUCTION IMPELLER OF A CENTRIFUGAL PUMP Proceedings of the Fortieth National Conference on Fluid Mechanics and Fluid Power December 12-14, 2013, NIT Hamirpur, Himachal Pradesh, India FMFP2013_141 COMPUTATIONAL FLOW ANALYSIS THROUGH A DOUBLE-SUCTION

More information

Keywords - Gas Turbine, Exhaust Diffuser, Annular Diffuser, CFD, Numerical Simulations.

Keywords - Gas Turbine, Exhaust Diffuser, Annular Diffuser, CFD, Numerical Simulations. Numerical Investigations of PGT10 Gas Turbine Exhaust Diffuser Using Hexahedral Dominant Grid Vaddin Chetan, D V Satish, Dr. Prakash S Kulkarni Department of Mechanical Engineering, VVCE, Mysore, Department

More information

Engineering Fluid Mechanics

Engineering Fluid Mechanics Engineering Fluid Mechanics Eighth Edition Clayton T. Crowe WASHINGTON STATE UNIVERSITY, PULLMAN Donald F. Elger UNIVERSITY OF IDAHO, MOSCOW John A. Roberson WASHINGTON STATE UNIVERSITY, PULLMAN WILEY

More information

CFD ANALYSIS OF TURBULENCE EFFECT ON REACTION IN STIRRED TANK REACTORS

CFD ANALYSIS OF TURBULENCE EFFECT ON REACTION IN STIRRED TANK REACTORS CFD ANALYSIS OF TURBULENCE EFFECT ON REACTION IN STIRRED TANK REACTORS Udaya Bhaskar Reddy R*, Gopalakrishnan S, Ramasamy E Department of Chemical Engineering, Coimbatore Institute of Technology, Coimbatore-

More information

Fundamentals of Fluid Mechanics

Fundamentals of Fluid Mechanics Sixth Edition Fundamentals of Fluid Mechanics International Student Version BRUCE R. MUNSON DONALD F. YOUNG Department of Aerospace Engineering and Engineering Mechanics THEODORE H. OKIISHI Department

More information

Viscous Flow in Ducts

Viscous Flow in Ducts Dr. M. Siavashi Iran University of Science and Technology Spring 2014 Objectives 1. Have a deeper understanding of laminar and turbulent flow in pipes and the analysis of fully developed flow 2. Calculate

More information

NUMERICAL STUDY ON PRESSURE DROP FACTOR IN THE VENT-CAP OF CDQ SHAFT

NUMERICAL STUDY ON PRESSURE DROP FACTOR IN THE VENT-CAP OF CDQ SHAFT Fifth International Conference on CFD in the Process Industries CSIRO, Melbourne, Australia 13-1 December 6 NUMERICAL STUDY ON PRESSURE DROP FACTOR IN THE VENT-CAP OF CDQ SHAFT Bo SONG, Yanhui FENG, Xinxin

More information

Theory & Applications of Computational Fluid Dynamics CFD

Theory & Applications of Computational Fluid Dynamics CFD جمعية رواد الھندسة والتكنولوجيا Theory & Applications of Computational Fluid Dynamics CFD Prepared and Presented By: Hesham Sami Abdul Munem Mechanical Engineer Pressure Vessels Department ENPPI Contents:

More information

3D Numerical Simulation of Supercritical Flow in Bends of Channel

3D Numerical Simulation of Supercritical Flow in Bends of Channel 3D Numerical Simulation of Supercritical Flow in Bends of Channel Masoud. Montazeri-Namin, Reyhaneh-Sadat. Ghazanfari-Hashemi, and Mahnaz. Ghaeini- Hessaroeyeh Abstract An attempt has been made to simulate

More information

Numerical Investigation of Multijet Air Impingement on Pin Fin Heat Sink with Effusion Slots

Numerical Investigation of Multijet Air Impingement on Pin Fin Heat Sink with Effusion Slots , 23-25 October, 2013, San Francisco, USA Numerical Investigation of Multijet Air Impingement on Pin Fin Heat Sink with Effusion Slots N. K. Chougule G. V. Parishwad A. R. Nadgire Abstract The work reported

More information

Lecture 30 Review of Fluid Flow and Heat Transfer

Lecture 30 Review of Fluid Flow and Heat Transfer Objectives In this lecture you will learn the following We shall summarise the principles used in fluid mechanics and heat transfer. It is assumed that the student has already been exposed to courses in

More information

2Dimensional CFD Simulation of Gas Fired Furnace during Heat Treatment Process

2Dimensional CFD Simulation of Gas Fired Furnace during Heat Treatment Process 2Dimensional CFD Simulation of Gas Fired Furnace during Heat Treatment Process Vivekanand D. Shikalgar 1, Umesh C.Rajmane 2, Sanjay S. Kumbhar 3, Rupesh R.bidkar 4, Sagar M. Pattar 5, Ashwini P. Patil

More information

THERMAL ANALYSIS OF SECOND STAGE GAS TURBINE ROTOR BLADE

THERMAL ANALYSIS OF SECOND STAGE GAS TURBINE ROTOR BLADE Polymers Research Journal ISSN: 195-50 Volume 6, Number 01 Nova Science Publishers, Inc. THERMAL ANALYSIS OF SECOND STAGE GAS TURBINE ROTOR BLADE E. Poursaeidi, M. Mohammadi and S. S. Khamesi University

More information

William В. Brower, Jr. A PRIMER IN FLUID MECHANICS. Dynamics of Flows in One Space Dimension. CRC Press Boca Raton London New York Washington, D.C.

William В. Brower, Jr. A PRIMER IN FLUID MECHANICS. Dynamics of Flows in One Space Dimension. CRC Press Boca Raton London New York Washington, D.C. William В. Brower, Jr. A PRIMER IN FLUID MECHANICS Dynamics of Flows in One Space Dimension CRC Press Boca Raton London New York Washington, D.C. Table of Contents Chapter 1 Fluid Properties Kinetic Theory

More information

Chapter three. Two-dimensional Cascades. Laith Batarseh

Chapter three. Two-dimensional Cascades. Laith Batarseh Chapter three Two-dimensional Cascades Laith Batarseh Turbo cascades The linear cascade of blades comprises a number of identical blades, equally spaced and parallel to one another cascade tunnel low-speed,

More information

Comparison of two equations closure turbulence models for the prediction of heat and mass transfer in a mechanically ventilated enclosure

Comparison of two equations closure turbulence models for the prediction of heat and mass transfer in a mechanically ventilated enclosure Proceedings of 4 th ICCHMT May 17-0, 005, Paris-Cachan, FRANCE 381 Comparison of two equations closure turbulence models for the prediction of heat and mass transfer in a mechanically ventilated enclosure

More information

CHAPTER THREE FLUID MECHANICS

CHAPTER THREE FLUID MECHANICS CHAPTER THREE FLUID MECHANICS 3.1. Measurement of Pressure Drop for Flow through Different Geometries 3.. Determination of Operating Characteristics of a Centrifugal Pump 3.3. Energy Losses in Pipes under

More information