Adjoint Solver Workshop
|
|
- Vanessa Hicks
- 6 years ago
- Views:
Transcription
1 Adjoint Solver Workshop
2 Why is an Adjoint Solver useful? Design and manufacture for better performance: e.g. airfoil, combustor, rotor blade, ducts, body shape, etc. by optimising a certain characteristic CFD has the capability to explore the design space Sensitivity analysis may be used to provide insight into how best to optimise the design
3 How can we explore a design space? STAR-CCM+ already used for sensitivity and optimisation using DOE approaches with surface response and optimum search Coupled with ISIGHT, modefrontier, Heeds, Optimus, and Optimate Pros: Straightforward generation of information by solving multiple design points to find optimal set of parameters for given objectives Cons: Prohibitively expensive when the number of parameters goes up i.e. for CCD: 1p-> 5 dp / 2p-> 9 dp / 5p-> 27 dp / 20 -> 553 dp STAR-CCM+ adjoint method provides a more efficient approach to sensitivity analysis where cost is independent of the number of design parameters Gradient method based on differentiating the primal equation Can be used in shape optimisation, flow field insight, uncertainty quantification, and inverse problems
4 What is the Adjoint Method? Helps understand influence of parameter variations on the solution Examples If I change the shape of my duct, what happens to the pressure drop? If I change my inlet conditions, will flow uniformity improve at the outlet? If I change my airfoil shape will it produce more lift? How sensitive is my flow to changes due to manufacturing tolerances The pressure loss of my system is too high, what are the main drivers of this?
5 Traditional Analysis Workflow How do I know the effect on solution if Geometry changes? Mesh changes? Boundary/physics variation? Traditional answer ends up in running many cases N configurations = N Cases Effects of parameter changes only understood after multiple iterations of analysis cycle Setup geometry, physics Run flow solver Analyze results Setup geometry, physics Run flow solver Analyze results Setup geometry, physics Run flow solver Analyze results
6 Adjoint Method Workflow Adjoint provides design insight Offers guidance towards improving system s performance Gives insight into relative influence of variables on objective Adjoint is effective for problems with many design variables Far fewer design iterations needed Faster route to optimised design Setup geometry, physics Run flow solver Analyze results Set Cost Functions Run adjoint solver Analyze results Update model Run flow solver Analyze results STAR-CCM+ Adjoint Solver
7 What the Adjoint Method Provides Input User Data Initial geometry, Surface/volume mesh Physical conditions (boundaries, flow models) Choose how to modify our simulation Deform shape, change boundaries etc Run Flow Solver Provides output data for given inputs Pressures, Velocities, Forces, Drag, Pressure Drop Solve Adjoint Flow & Mesh Take flow solution and provide sensitivity of objectives to flow & geometry parameters Choose Simulation Objectives Reduce pressure drop, maximize lift, velocity uniformity etc Objectives become adjoint cost functions
8 Examples of typical uses Shape optimisation Part design Determine best design based on shape modifications Drive the parametric changes Leverage external optimisation code Coupled with gradient-based optimisation method Examples 1. Car-body shape analysis to improve external aerodynamics behavior 2. Optimise the geometry of three-way catalyst pipes optimisation for satisfying (A) Velocity uniformity in front of catalyst and (B) Velocity value at the specific point conditions Maximizing A, B, A and B Maximizing A and minimizing B Maximizing B and minimizing A
9 STAR-CCM+ Adjoint Solver Available in STAR-CCM+ v8.04 onwards Delivered as a standard feature No additional license Aggressive development schedule lots of new features
10 Compatibility with Primal Flow Solution Adjoint solver provides sensitivities based on the following models: Coupled implicit flow and fluid energy solvers Steady State Moving Reference Frame Multi-region Inviscid, laminar and frozen turbulence Single component gas and liquid Ideal gas (compressible) or constant density (incompressible) Constant material properties Use of the double precision version of STAR-CCM+ is recommended
11 Adjoint Solver Capabilities Flow and mesh adjoint solvers Fully parallel 1st or 2nd order spatial discretisation solution Defect correction solver method GMRES Krylov solver method Optional method for tough to converge cases Arbitrary number of cost functions Force (drag, lift), Moment Pressure drop Flow uniformity Sensitivities of cost functions with respect to Flow residuals Momentum equations, continuity, etc Design points Gradients with respect to user defined design points Mesh morphing based on design point relocation
12 Adjoint Cost Functions Cost functions represent the engineering objectives of the simulation An arbitrary number may be setup It is possible to view the flow and mesh adjoints for each cost function They may be created on physical boundaries or interfaces Force (e.g. Lift, Drag) & Moment Takes information from force or moment report with usual inputs Pressure drop Difference of mass flow averaged total pressure between two groups of boundary surfaces Specify high and low pressure boundaries Uniformity ratio Deviation of local normal velocity from mass flow averaged value
13 Adjoint Outputs Adjoint flow data Sensitivity of cost functions with respect to x, y and z momentum Allows us to understand how a change in the velocity field affects the cost function of interest E.G. Will increasing inlet velocities of my duct harm the uniformity at the outlet? Continuity Sensitivity of cost functions to changes in the mass of the system E.G. if I insert a boundary layer suction device will my drag change? Energy Effects of changing thermal properties on the cost function E.G. How will energy affect my pressure drop as a result of changing my fluid s density?
14 Adjoint Outputs Adjoint mesh data The adjoint mesh solver provides sensitivities with respect to mesh coordinates This allows you to better understand the affect of mesh structure on the cost function of interest E.G. Which areas of mesh have the greatest effect on my lift force and where should I pay attention to adequately capturing flow structures Boundary parameter sensitivity reports These reports return the gradient of the cost function with respect to changes in boundary inputs Gradients are only returned for inputs for the boundary type specified This allows you to better understand the influence of boundary conditions values on the cost function of interest E.G. If I change the velocity on my inlet, how will my uniformity change?
15 Example Case
16 Front Wing optimisation Goal: Increase the downforce on race car front wing Case Details: 100 kph 700k polyhedra Cost function based on force report on lower element
17 Solution Method Unconstrained steepest decent method used 524 design points created in a net around the wing Gradients calculated at design points Displacements calculated by scaling gradients by an alpha of 5e-5 Run Primal Flow Solution Run Adjoin Flow Solution Calculate Mesh Sensitivities Scale Gradients to Calculate Offset Positions Morph Mesh
18 Results Wing Profile
19 Results - Downforce 480 Front Wing Lower Element Downforce Downforce [N] % Improvement in Downforce Across 10 Design Iterations Design Iteration
20 Using the STAR-CCM+ Adjoint Solver
21 Running an Adjoint Analysis Run primal flow solution Attention must be paid to convergence Enable adjoint flow solver Selection via physics continua model selector Choose cost functions Available via right click on Adjoint cost functions Run adjoint flow solver Right click on adjoint flow model to step or run Run adjoint mesh solver Right click on adjoint mesh compute mesh sensitivity to run Visualize results Scalars and vectors grouped under Adjoint then by cost function
22 Demonstration
23 Summary Sensitivity analysis may be used to provide insight into how best to optimise a design STAR-CCM+ provides an integrated adjoint solver The solver provides both 1st and 2nd order adjoints for improved accuracy Requires no additional licenses Extensive documentation and tutorials CD-adapco is actively involved with our partners to integrate adjoint with optimisation tools Aggressive adjoint development schedule will be maintained, delivering new features
24 Thank You
Shape optimisation using breakthrough technologies
Shape optimisation using breakthrough technologies Compiled by Mike Slack Ansys Technical Services 2010 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary Introduction Shape optimisation technologies
More informationMesh Morphing and the Adjoint Solver in ANSYS R14.0. Simon Pereira Laz Foley
Mesh Morphing and the Adjoint Solver in ANSYS R14.0 Simon Pereira Laz Foley 1 Agenda Fluent Morphing-Optimization Feature RBF Morph with ANSYS DesignXplorer Adjoint Solver What does an adjoint solver do,
More informationVerification and Validation of Turbulent Flow around a Clark-Y Airfoil
Verification and Validation of Turbulent Flow around a Clark-Y Airfoil 1. Purpose 58:160 Intermediate Mechanics of Fluids CFD LAB 2 By Tao Xing and Fred Stern IIHR-Hydroscience & Engineering The University
More informationAdjoint Solver Advances, Tailored to Automotive Applications
Adjoint Solver Advances, Tailored to Automotive Applications Stamatina Petropoulou s.petropoulou@iconcfd.com 1 Contents 1. Icon s Principal Work in FlowHead 2. Demonstration Cases 3. Icon s Further Development
More informationIntroduction to ANSYS CFX
Workshop 03 Fluid flow around the NACA0012 Airfoil 16.0 Release Introduction to ANSYS CFX 2015 ANSYS, Inc. March 13, 2015 1 Release 16.0 Workshop Description: The flow simulated is an external aerodynamics
More informationRBF Morph An Add-on Module for Mesh Morphing in ANSYS Fluent
RBF Morph An Add-on Module for Mesh Morphing in ANSYS Fluent Gilles Eggenspieler Senior Product Manager 1 Morphing & Smoothing A mesh morpher is a tool capable of performing mesh modifications in order
More informationIntroduction to Computational Fluid Dynamics Mech 122 D. Fabris, K. Lynch, D. Rich
Introduction to Computational Fluid Dynamics Mech 122 D. Fabris, K. Lynch, D. Rich 1 Computational Fluid dynamics Computational fluid dynamics (CFD) is the analysis of systems involving fluid flow, heat
More informationIntroduction to CFX. Workshop 2. Transonic Flow Over a NACA 0012 Airfoil. WS2-1. ANSYS, Inc. Proprietary 2009 ANSYS, Inc. All rights reserved.
Workshop 2 Transonic Flow Over a NACA 0012 Airfoil. Introduction to CFX WS2-1 Goals The purpose of this tutorial is to introduce the user to modelling flow in high speed external aerodynamic applications.
More informationIntroduction to C omputational F luid Dynamics. D. Murrin
Introduction to C omputational F luid Dynamics D. Murrin Computational fluid dynamics (CFD) is the science of predicting fluid flow, heat transfer, mass transfer, chemical reactions, and related phenomena
More informationCFD Optimisation case studies with STAR-CD and STAR-CCM+
CFD Optimisation case studies with STAR-CD and STAR-CCM+ Summary David J. Eby, Preetham Rao, Advanced Methods Group, Plymouth, MI USA Presented by Fred Mendonça, CD-adapco London, UK Outline Introduction
More informationAerodynamic optimization using Adjoint methods and parametric CAD models
Aerodynamic optimization using Adjoint methods and parametric CAD models ECCOMAS Congress 2016 P. Hewitt S. Marques T. Robinson D. Agarwal @qub.ac.uk School of Mechanical and Aerospace Engineering Queen
More informationState of the art at DLR in solving aerodynamic shape optimization problems using the discrete viscous adjoint method
DLR - German Aerospace Center State of the art at DLR in solving aerodynamic shape optimization problems using the discrete viscous adjoint method J. Brezillon, C. Ilic, M. Abu-Zurayk, F. Ma, M. Widhalm
More informationTutorial 17. Using the Mixture and Eulerian Multiphase Models
Tutorial 17. Using the Mixture and Eulerian Multiphase Models Introduction: This tutorial examines the flow of water and air in a tee junction. First you will solve the problem using the less computationally-intensive
More informationTHE EFFECTS OF THE PLANFORM SHAPE ON DRAG POLAR CURVES OF WINGS: FLUID-STRUCTURE INTERACTION ANALYSES RESULTS
March 18-20, 2013 THE EFFECTS OF THE PLANFORM SHAPE ON DRAG POLAR CURVES OF WINGS: FLUID-STRUCTURE INTERACTION ANALYSES RESULTS Authors: M.R. Chiarelli, M. Ciabattari, M. Cagnoni, G. Lombardi Speaker:
More informationCFD Topological Optimization of a Car Water-Pump Inlet using TOSCA Fluid and STAR- CCM+
CFD Topological Optimization of a Car Water-Pump Inlet using TOSCA Fluid and STAR- CCM+ Dr. Anselm Hopf Dr. Andrew Hitchings Les Routledge Ford Motor Company CONTENTS Introduction/Motivation Optimization
More informationCoupled Analysis of FSI
Coupled Analysis of FSI Qin Yin Fan Oct. 11, 2008 Important Key Words Fluid Structure Interface = FSI Computational Fluid Dynamics = CFD Pressure Displacement Analysis = PDA Thermal Stress Analysis = TSA
More informationSolution Recording and Playback: Vortex Shedding
STAR-CCM+ User Guide 6663 Solution Recording and Playback: Vortex Shedding This tutorial demonstrates how to use the solution recording and playback module for capturing the results of transient phenomena.
More informationHigh-Lift Aerodynamics: STAR-CCM+ Applied to AIAA HiLiftWS1 D. Snyder
High-Lift Aerodynamics: STAR-CCM+ Applied to AIAA HiLiftWS1 D. Snyder Aerospace Application Areas Aerodynamics Subsonic through Hypersonic Aeroacoustics Store release & weapons bay analysis High lift devices
More informationIsotropic Porous Media Tutorial
STAR-CCM+ User Guide 3927 Isotropic Porous Media Tutorial This tutorial models flow through the catalyst geometry described in the introductory section. In the porous region, the theoretical pressure drop
More informationComputational Study of Laminar Flowfield around a Square Cylinder using Ansys Fluent
MEGR 7090-003, Computational Fluid Dynamics :1 7 Spring 2015 Computational Study of Laminar Flowfield around a Square Cylinder using Ansys Fluent Rahul R Upadhyay Master of Science, Dept of Mechanical
More informationStreamlining Aircraft Icing Simulations. D. Snyder, M. Elmore
Streamlining Aircraft Icing Simulations D. Snyder, M. Elmore Industry Analysis Needs / Trends Fidelity Aircraft Ice Protection Systems-Level Modeling Optimization Background Ice accretion can critically
More informationDebojyoti Ghosh. Adviser: Dr. James Baeder Alfred Gessow Rotorcraft Center Department of Aerospace Engineering
Debojyoti Ghosh Adviser: Dr. James Baeder Alfred Gessow Rotorcraft Center Department of Aerospace Engineering To study the Dynamic Stalling of rotor blade cross-sections Unsteady Aerodynamics: Time varying
More informationAccurate and Efficient Turbomachinery Simulation. Chad Custer, PhD Turbomachinery Technical Specialist
Accurate and Efficient Turbomachinery Simulation Chad Custer, PhD Turbomachinery Technical Specialist Outline Turbomachinery simulation advantages Axial fan optimization Description of design objectives
More informationSteady Flow: Lid-Driven Cavity Flow
STAR-CCM+ User Guide Steady Flow: Lid-Driven Cavity Flow 2 Steady Flow: Lid-Driven Cavity Flow This tutorial demonstrates the performance of STAR-CCM+ in solving a traditional square lid-driven cavity
More informationRecent & Upcoming Features in STAR-CCM+ for Aerospace Applications Deryl Snyder, Ph.D.
Recent & Upcoming Features in STAR-CCM+ for Aerospace Applications Deryl Snyder, Ph.D. Outline Introduction Aerospace Applications Summary New Capabilities for Aerospace Continuity Convergence Accelerator
More informationModeling Flow Through Porous Media
Tutorial 7. Modeling Flow Through Porous Media Introduction Many industrial applications involve the modeling of flow through porous media, such as filters, catalyst beds, and packing. This tutorial illustrates
More informationSTAR-CCM+: Wind loading on buildings SPRING 2018
STAR-CCM+: Wind loading on buildings SPRING 2018 1. Notes on the software 2. Assigned exercise (submission via Blackboard; deadline: Thursday Week 3, 11 pm) 1. NOTES ON THE SOFTWARE STAR-CCM+ generates
More informationCommercial Implementations of Optimization Software and its Application to Fluid Dynamics Problems
Commercial Implementations of Optimization Software and its Application to Fluid Dynamics Problems Szymon Buhajczuk, M.A.Sc SimuTech Group Toronto Fields Institute Optimization Seminar December 6, 2011
More informationSpeed and Accuracy of CFD: Achieving Both Successfully ANSYS UK S.A.Silvester
Speed and Accuracy of CFD: Achieving Both Successfully ANSYS UK S.A.Silvester 2010 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary Content ANSYS CFD Introduction ANSYS, the company Simulation
More informationI. Introduction. Optimization Algorithm Components. Abstract for the 5 th OpenFOAM User Conference 2017, Wiesbaden - Germany
An Aerodynamic Optimization Framework for the Automotive Industry, based on Continuous Adjoint and OpenFOAM E. Papoutsis-Kiachagias 1, V. Asouti 1, K. Giannakoglou 1, K. Gkagkas 2 1) National Technical
More informationFluent User Services Center
Solver Settings 5-1 Using the Solver Setting Solver Parameters Convergence Definition Monitoring Stability Accelerating Convergence Accuracy Grid Independence Adaption Appendix: Background Finite Volume
More informationMulti-objective adjoint optimization of flow in duct and pipe networks
Multi-objective adjoint optimization of flow in duct and pipe networks Eugene de Villiers Thomas Schumacher 6th OPENFOAM Workshop PennState University, USA 13-16 June, 2011 info@engys.eu Tel: +44 (0)20
More informationValidation of an Unstructured Overset Mesh Method for CFD Analysis of Store Separation D. Snyder presented by R. Fitzsimmons
Validation of an Unstructured Overset Mesh Method for CFD Analysis of Store Separation D. Snyder presented by R. Fitzsimmons Stores Separation Introduction Flight Test Expensive, high-risk, sometimes catastrophic
More informationCalculate a solution using the pressure-based coupled solver.
Tutorial 19. Modeling Cavitation Introduction This tutorial examines the pressure-driven cavitating flow of water through a sharpedged orifice. This is a typical configuration in fuel injectors, and brings
More informationANSYS FLUENT. Airfoil Analysis and Tutorial
ANSYS FLUENT Airfoil Analysis and Tutorial ENGR083: Fluid Mechanics II Terry Yu 5/11/2017 Abstract The NACA 0012 airfoil was one of the earliest airfoils created. Its mathematically simple shape and age
More informationSTAR-CCM+ User Guide 6922
STAR-CCM+ User Guide 6922 Introduction Welcome to the STAR-CCM+ introductory tutorial. In this tutorial, you explore the important concepts and workflow. Complete this tutorial before attempting any others.
More informationMcNair Scholars Research Journal
McNair Scholars Research Journal Volume 2 Article 1 2015 Benchmarking of Computational Models against Experimental Data for Velocity Profile Effects on CFD Analysis of Adiabatic Film-Cooling Effectiveness
More informationMulti-Mesh CFD. Chris Roy Chip Jackson (1 st year PhD student) Aerospace and Ocean Engineering Department Virginia Tech
Multi-Mesh CFD Chris Roy Chip Jackson (1 st year PhD student) Aerospace and Ocean Engineering Department Virginia Tech cjroy@vt.edu May 21, 2014 CCAS Program Review, Columbus, OH 1 Motivation Automated
More informationCo-Simulation von Flownex und ANSYS CFX am Beispiel einer Verdrängermaschine
Co-Simulation von Flownex und ANSYS CFX am Beispiel einer Verdrängermaschine Benoit Bosc-Bierne, Dr. Andreas Spille-Kohoff, Farai Hetze CFX Berlin Software GmbH, Berlin Contents Positive displacement compressors
More informationCompressible Flow in a Nozzle
SPC 407 Supersonic & Hypersonic Fluid Dynamics Ansys Fluent Tutorial 1 Compressible Flow in a Nozzle Ahmed M Nagib Elmekawy, PhD, P.E. Problem Specification Consider air flowing at high-speed through a
More informationA B C D E. Settings Choose height, H, free stream velocity, U, and fluid (dynamic viscosity and density ) so that: Reynolds number
Individual task Objective To derive the drag coefficient for a 2D object, defined as where D (N/m) is the aerodynamic drag force (per unit length in the third direction) acting on the object. The object
More informationAutomated Design Exploration and Optimization. Clinton Smith, PhD CAE Support and Training PADT April 26, 2012
Automated Design Exploration and Optimization Clinton Smith, PhD CAE Support and Training PADT April 26, 2012 1 Agenda The path to robust design A closer look at what DX offers Some examples 2 The Path
More informationTurbomachinery Applications with STAR-CCM+ Turbomachinery Sector Manager
Turbomachinery Applications with STAR-CCM+ Fred Mendonça Fred Mendonça Turbomachinery Sector Manager An Integrated Solution The applications of the software seem to be infinite. The user-friendly A single
More informationShape optimization and active flow control for improved aerodynamic properties Siniša Krajnovic
Shape optimization and active flow control for improved aerodynamic properties Siniša Krajnovic HPC resources used Computer resources at C3SE at Chalmers in Göteborg Computer cluster: Neolith NSC Linköping
More informationShape Optimization for Aerodynamic Efficiency Using Adjoint Methods
White Paper Shape Optimization for Aerodynamic Efficiency Using Adjoint Methods Adjoint solvers take a Computational Fluid Dynamics (CFD) flow solution and calculate the sensitivity of performance indicators
More informationStudies of the Continuous and Discrete Adjoint Approaches to Viscous Automatic Aerodynamic Shape Optimization
Studies of the Continuous and Discrete Adjoint Approaches to Viscous Automatic Aerodynamic Shape Optimization Siva Nadarajah Antony Jameson Stanford University 15th AIAA Computational Fluid Dynamics Conference
More informationAnalysis Comparison between CFD and FEA of an Idealized Concept V- Hull Floor Configuration in Two Dimensions
2010 NDIA GROUND VEHICLE SYSTEMS ENGINEERING AND TECHNOLOGY SYMPOSIUM MODELING & SIMULATION, TESTING AND VALIDATION (MSTV) MINI-SYMPOSIUM AUGUST 17-19 DEARBORN, MICHIGAN Analysis Comparison between CFD
More informationANSYS Fluid Structure Interaction for Thermal Management and Aeroelasticity
ANSYS Fluid Structure Interaction for Thermal Management and Aeroelasticity Phil Stopford Duxford Air Museum 11th May 2011 2011 2010 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary Fluid Structure
More informationAero-Vibro Acoustics For Wind Noise Application. David Roche and Ashok Khondge ANSYS, Inc.
Aero-Vibro Acoustics For Wind Noise Application David Roche and Ashok Khondge ANSYS, Inc. Outline 1. Wind Noise 2. Problem Description 3. Simulation Methodology 4. Results 5. Summary Thursday, October
More informationSimulation of Turbulent Flow in an Asymmetric Diffuser
Simulation of Turbulent Flow in an Asymmetric Diffuser 1. Purpose 58:160 Intermediate Mechanics of Fluids CFD LAB 3 By Tao Xing and Fred Stern IIHR-Hydroscience & Engineering The University of Iowa C.
More information김태희, 권형일 1, 최성임 2* T.H. Kim, H.I. Kwon, and S.I. Choi
김태희, 권형일 1, 최성임 2* A STUDY ON INVERSE DESIGN OF AIRFOIL USING e-science BASED AERODYNAMICS DESIGN OPTIMIZATION FRAMEWORK T.H. Kim, H.I. Kwon, and S.I. Choi Recently, with advanced computational performance,
More informationFlow in an Intake Manifold
Tutorial 2. Flow in an Intake Manifold Introduction The purpose of this tutorial is to model turbulent flow in a simple intake manifold geometry. An intake manifold is a system of passages which carry
More informationExpress Introductory Training in ANSYS Fluent Workshop 04 Fluid Flow Around the NACA0012 Airfoil
Express Introductory Training in ANSYS Fluent Workshop 04 Fluid Flow Around the NACA0012 Airfoil Dimitrios Sofialidis Technical Manager, SimTec Ltd. Mechanical Engineer, PhD PRACE Autumn School 2013 -
More informationConstrained Aero-elastic Multi-Point Optimization Using the Coupled Adjoint Approach
www.dlr.de Chart 1 Aero-elastic Multi-point Optimization, M.Abu-Zurayk, MUSAF II, 20.09.2013 Constrained Aero-elastic Multi-Point Optimization Using the Coupled Adjoint Approach M. Abu-Zurayk MUSAF II
More informationAdvanced Applications of STAR- CCM+ in Chemical Process Industry Ravindra Aglave Director, Chemical Process Industry
Advanced Applications of STAR- CCM+ in Chemical Process Industry Ravindra Aglave Director, Chemical Process Industry Outline Notable features released in 2013 Gas Liquid Flows with STAR-CCM+ Packed Bed
More informationSPC 307 Aerodynamics. Lecture 1. February 10, 2018
SPC 307 Aerodynamics Lecture 1 February 10, 2018 Sep. 18, 2016 1 Course Materials drahmednagib.com 2 COURSE OUTLINE Introduction to Aerodynamics Review on the Fundamentals of Fluid Mechanics Euler and
More informationA study of Jumper FIV due to multiphase internal flow: understanding life-cycle fatigue. Alan Mueller & Oleg Voronkov
A study of Jumper FIV due to multiphase internal flow: understanding life-cycle fatigue Alan Mueller & Oleg Voronkov Case description Main structural dimensions [1]: deformable jumper [2] in Mixture on
More informationUse of CFD in Design and Development of R404A Reciprocating Compressor
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2006 Use of CFD in Design and Development of R404A Reciprocating Compressor Yogesh V. Birari
More informationOptimisationfor CFD. ANSYS R14 Fluids Update Seminar. Milton Park, February 16 th, 2012 Sheffield, February 29 th, 2012 Aberdeen, March 8 th, 2012
Optimisationfor CFD ANSYS R14 Fluids Update Seminar David Mann, ANSYS UK Ltd. Milton Park, February 16 th, 2012 Sheffield, February 29 th, 2012 Aberdeen, March 8 th, 2012 1 Agenda Optimisation Tools for
More informationImpact of STAR-CCM+ v7.0 in the Automotive Industry Frederick J. Ross, CD-adapco Director, Ground Transportation
Impact of STAR-CCM+ v7.0 in the Automotive Industry Frederick J. Ross, CD-adapco Director, Ground Transportation Vehicle Simulation Components Vehicle Aerodynamics Design Studies Aeroacoustics Water/Dirt
More informationMissile External Aerodynamics Using Star-CCM+ Star European Conference 03/22-23/2011
Missile External Aerodynamics Using Star-CCM+ Star European Conference 03/22-23/2011 StarCCM_StarEurope_2011 4/6/11 1 Overview 2 Role of CFD in Aerodynamic Analyses Classical aerodynamics / Semi-Empirical
More informationUsing a Single Rotating Reference Frame
Tutorial 9. Using a Single Rotating Reference Frame Introduction This tutorial considers the flow within a 2D, axisymmetric, co-rotating disk cavity system. Understanding the behavior of such flows is
More informationModeling External Compressible Flow
Tutorial 3. Modeling External Compressible Flow Introduction The purpose of this tutorial is to compute the turbulent flow past a transonic airfoil at a nonzero angle of attack. You will use the Spalart-Allmaras
More informationNUMERICAL 3D TRANSONIC FLOW SIMULATION OVER A WING
Review of the Air Force Academy No.3 (35)/2017 NUMERICAL 3D TRANSONIC FLOW SIMULATION OVER A WING Cvetelina VELKOVA Department of Technical Mechanics, Naval Academy Nikola Vaptsarov,Varna, Bulgaria (cvetelina.velkova1985@gmail.com)
More informationSimulating Sinkage & Trim for Planing Boat Hulls. A Fluent Dynamic Mesh 6DOF Tutorial
Simulating Sinkage & Trim for Planing Boat Hulls A Fluent Dynamic Mesh 6DOF Tutorial 1 Introduction Workshop Description This workshop describes how to perform a transient 2DOF simulation of a planing
More informationApplication of Wray-Agarwal Turbulence Model for Accurate Numerical Simulation of Flow Past a Three-Dimensional Wing-body
Washington University in St. Louis Washington University Open Scholarship Mechanical Engineering and Materials Science Independent Study Mechanical Engineering & Materials Science 4-28-2016 Application
More informationStrömningslära Fluid Dynamics. Computer laboratories using COMSOL v4.4
UMEÅ UNIVERSITY Department of Physics Claude Dion Olexii Iukhymenko May 15, 2015 Strömningslära Fluid Dynamics (5FY144) Computer laboratories using COMSOL v4.4!! Report requirements Computer labs must
More informationS-ducts and Nozzles: STAR-CCM+ at the Propulsion Aerodynamics Workshop. Peter Burns, CD-adapco
S-ducts and Nozzles: STAR-CCM+ at the Propulsion Aerodynamics Workshop Peter Burns, CD-adapco Background The Propulsion Aerodynamics Workshop (PAW) has been held twice PAW01: 2012 at the 48 th AIAA JPC
More informationAERODYNAMIC OPTIMIZATION OF A FORMULA STUDENT CAR
AERODYNAMIC OPTIMIZATION OF A FORMULA STUDENT CAR 1 Argyrios Apostolidis *, 2 Athanasios Mattas, 3 Aggelos Gaitanis, 4 Nikolaos Christodoulou 1 Aristotle Racing Team, Greece, 4 BETA CAE Systems S.A., Greece
More informationADJOINT OPTIMIZATION OF 2D-AIRFOILS IN INCOMPRESSIBLE FLOWS
11th World Congress on Computational Mechanics (WCCM XI) 5th European Conference on Computational Mechanics (ECCM V) 6th European Conference on Computational Fluid Dynamics (ECFD VI) E. Oñate, J. Oliver
More informationParameter based 3D Optimization of the TU Berlin TurboLab Stator with ANSYS optislang
presented at the 14th Weimar Optimization and Stochastic Days 2017 Source: www.dynardo.de/en/library Parameter based 3D Optimization of the TU Berlin TurboLab Stator with ANSYS optislang Benedikt Flurl
More informationAdjoint Optimization combined with mesh morphing for CFD applications
Adjoint Optimization combined with mesh morphing for CFD applications Alberto Clarich*, Luca Battaglia*, Enrico Nobile**, Marco Evangelos Biancolini, Ubaldo Cella *ESTECO Spa, Italy. Email: engineering@esteco.com
More informationAnalysis of an airfoil
UNDERGRADUATE RESEARCH FALL 2010 Analysis of an airfoil using Computational Fluid Dynamics Tanveer Chandok 12/17/2010 Independent research thesis at the Georgia Institute of Technology under the supervision
More informationSupersonic Flow Over a Wedge
SPC 407 Supersonic & Hypersonic Fluid Dynamics Ansys Fluent Tutorial 2 Supersonic Flow Over a Wedge Ahmed M Nagib Elmekawy, PhD, P.E. Problem Specification A uniform supersonic stream encounters a wedge
More informationUsing STAR-CCM+ for Catalyst Utilization Analysis
Using STAR-CCM+ for Catalyst Utilization Analysis Amsterdam Netherlands March 19-21 2012 W.U. A. Leong Dunton Technical Centre Ford Motor Company S. Eroglu and S. Guryuva Gebze Engineering Ford Otosan
More informationOptimization of under-relaxation factors. and Courant numbers for the simulation of. sloshing in the oil pan of an automobile
Optimization of under-relaxation factors and Courant numbers for the simulation of sloshing in the oil pan of an automobile Swathi Satish*, Mani Prithiviraj and Sridhar Hari⁰ *National Institute of Technology,
More informationTutorial: Hydrodynamics of Bubble Column Reactors
Tutorial: Introduction The purpose of this tutorial is to provide guidelines and recommendations for solving a gas-liquid bubble column problem using the multiphase mixture model, including advice on solver
More informationA COUPLED FINITE VOLUME SOLVER FOR THE SOLUTION OF LAMINAR TURBULENT INCOMPRESSIBLE AND COMPRESSIBLE FLOWS
A COUPLED FINITE VOLUME SOLVER FOR THE SOLUTION OF LAMINAR TURBULENT INCOMPRESSIBLE AND COMPRESSIBLE FLOWS L. Mangani Maschinentechnik CC Fluidmechanik und Hydromaschinen Hochschule Luzern Technik& Architektur
More informationSimulation of Flow Development in a Pipe
Tutorial 4. Simulation of Flow Development in a Pipe Introduction The purpose of this tutorial is to illustrate the setup and solution of a 3D turbulent fluid flow in a pipe. The pipe networks are common
More informationANSYS AIM Tutorial Turbulent Flow Over a Backward Facing Step
ANSYS AIM Tutorial Turbulent Flow Over a Backward Facing Step Author(s): Sebastian Vecchi, ANSYS Created using ANSYS AIM 18.1 Problem Specification Pre-Analysis & Start Up Governing Equation Start-Up Geometry
More informationSwapnil Nimse Project 1 Challenge #2
Swapnil Nimse Project 1 Challenge #2 Project Overview: Using Ansys-Fluent, analyze dependency of the steady-state temperature at different parts of the system on the flow velocity at the inlet and buoyancy-driven
More informationComputational Fluid Dynamics (CFD) Simulation in Air Duct Channels Using STAR CCM+
Available onlinewww.ejaet.com European Journal of Advances in Engineering and Technology, 2017,4 (3): 216-220 Research Article ISSN: 2394-658X Computational Fluid Dynamics (CFD) Simulation in Air Duct
More informationThe Continuous Adjoint Method for the Computation of First- and Higher-Order Sensitivities
NATIONAL TECHNICAL UNIVERSITY OF ATHENS Parallel CFD & Optimization Unit Laboratory of Thermal Turbomachines The Continuous Adjoint Method for the Computation of First- and Higher-Order Sensitivities (Activities,
More informationHow to Enter and Analyze a Wing
How to Enter and Analyze a Wing Entering the Wing The Stallion 3-D built-in geometry creation tool can be used to model wings and bodies of revolution. In this example, a simple rectangular wing is modeled
More informationAdjoint-Based Sensitivity Analysis for Computational Fluid Dynamics
Adjoint-Based Sensitivity Analysis for Computational Fluid Dynamics Dimitri J. Mavriplis Max Castagne Professor Department of Mechanical Engineering University of Wyoming Laramie, WY USA Motivation Computational
More informationFlow and Heat Transfer in a Mixing Elbow
Flow and Heat Transfer in a Mixing Elbow Objectives The main objectives of the project are to learn (i) how to set up and perform flow simulations with heat transfer and mixing, (ii) post-processing and
More informationCFD Simulation of a dry Scroll Vacuum Pump including Leakage Flows
CFD Simulation of a dry Scroll Vacuum Pump including Leakage Flows Jan Hesse, Rainer Andres CFX Berlin Software GmbH, Berlin, Germany 1 Introduction Numerical simulation results of a dry scroll vacuum
More informationComparison Between Numerical & PIV Experimental Results for Gas-Solid Flow in Ducts
Fabio Kasper Comparison Between Numerical & PIV Experimental Results for Gas-Solid Flow in Ducts Rodrigo Decker, Oscar Sgrott Jr., Henry F. Meier Waldir Martignoni Agenda Introduction The Test Bench Case
More informationResearch and Design working characteristics of orthogonal turbine Nguyen Quoc Tuan (1), Chu Dinh Do (2), Quach Thi Son (2)
GSJ: VOLUME 6, ISSUE 6, JUNE 018 116 Research and Design working characteristics of orthogonal turbine Nguyen Quoc Tuan (1), Chu Dinh Do (), Quach Thi Son () (1) Institute for hydro power and renewable
More informationCFD MODELING FOR PNEUMATIC CONVEYING
CFD MODELING FOR PNEUMATIC CONVEYING Arvind Kumar 1, D.R. Kaushal 2, Navneet Kumar 3 1 Associate Professor YMCAUST, Faridabad 2 Associate Professor, IIT, Delhi 3 Research Scholar IIT, Delhi e-mail: arvindeem@yahoo.co.in
More informationEXPERIMENTAL VALIDATION OF STAR-CCM+ FOR LIQUID CONTAINER SLOSH DYNAMICS
EXPERIMENTAL VALIDATION OF STAR-CCM+ FOR LIQUID CONTAINER SLOSH DYNAMICS Brandon Marsell a.i. solutions, Launch Services Program, Kennedy Space Center, FL 1 Agenda Introduction Problem Background Experiment
More informationOpenFOAM GUIDE FOR BEGINNERS
OpenFOAM GUIDE FOR BEGINNERS Authors This guide has been developed by: In association with: Pedro Javier Gamez and Gustavo Raush The Foam House Barcelona ETSEIAT-UPC June 2014 2 OPENFOAM GUIDE FOR BEGINNERS
More informationGrid. Apr 09, 1998 FLUENT 5.0 (2d, segregated, lam) Grid. Jul 31, 1998 FLUENT 5.0 (2d, segregated, lam)
Tutorial 2. Around an Airfoil Transonic Turbulent Flow Introduction: The purpose of this tutorial is to compute the turbulent flow past a transonic airfoil at a non-zero angle of attack. You will use the
More informationGradient-based Optimization of Parameterized CAD Geometries
11 th World Congress on Structural and Multidisciplinary Optimization 7 th - 12 th, June 2015, Sydney Australia Gradient-based Optimization of Parameterized CAD Geometries Timothée Leblond 1,2, Pierre
More informationRyian Hunter MAE 598
Setup: The initial geometry was produced using the engineering schematics provided in the project assignment document using the ANSYS DesignModeler application taking advantage of system symmetry. Fig.
More informationCD-adapco STAR Global Conference, Orlando, 2013, March 18-20
Transient Radial Blower Simulation as Part of the Development Process W. Kühnel, M. Weinmann, G. Apostolopoulos, S. Larpent Behr GmbH & Co. KG, Germany CD-adapco STAR Global Conference, Orlando, 2013,
More informationCFD Analysis of conceptual Aircraft body
CFD Analysis of conceptual Aircraft body Manikantissar 1, Dr.Ankur geete 2 1 M. Tech scholar in Mechanical Engineering, SD Bansal college of technology, Indore, M.P, India 2 Associate professor in Mechanical
More informationVerification and Validation of Turbulent Flow around a Clark-Y Airfoil
1 Verification and Validation of Turbulent Flow around a Clark-Y Airfoil 1. Purpose ME:5160 Intermediate Mechanics of Fluids CFD LAB 2 (ANSYS 19.1; Last Updated: Aug. 7, 2018) By Timur Dogan, Michael Conger,
More informationANSYS AIM Tutorial Compressible Flow in a Nozzle
ANSYS AIM Tutorial Compressible Flow in a Nozzle Author(s): Sebastian Vecchi Created using ANSYS AIM 18.1 Problem Specification Pre-Analysis & Start Up Pre-Analysis Start-Up Geometry Import Geometry Mesh
More informationModeling Unsteady Compressible Flow
Tutorial 4. Modeling Unsteady Compressible Flow Introduction In this tutorial, FLUENT s density-based implicit solver is used to predict the timedependent flow through a two-dimensional nozzle. As an initial
More information