COMPUTATIONAL FLUID DYNAMICS [AE _]
Course objectives:
- Introduction to CFD (4 hours)
- What is computational fluid dynamics?
- Basic principles of CFD
- Stages in a CFD simulation
- Fluid-flow equations
- The main discretisation methods
- Exercises
- Fluid-Flow Equations (6 hours)
- Introduction
- Conservative differential equations
- Non-conservative differential equations
- Non-dimensionalisation
- Exercises (Numerical Problems)
- Approximations and Simplified Equations (8 hours)
- Steady-state vstime-dependent flow
- Two-dimensional vs three-dimensional flow
- Incompressible vs compressible flow
- Inviscidvs viscous flow
- Hydrostatic vs non-hydrostatic flow
- Boussinesq approximation for density
- Depth-averaged (shallow-water) equations
- Reynolds-averaged equations (turbulent flow)
- Examples
- The Scalar-Transport Equation (8 hours)
- Control-volume notation
- The steady-state 1-d advection-diffusion equation
- Discretising diffusion
- Discretising the source term
- The matrix equation
- Discretising advection (part 1)
- Extension to 2 and 3 dimensions
- Discretisation properties
- Discretising advection (part 2)
- Implementation of advanced advection schemes
- Boundary conditions
- Solution of matrix equations
- Examples (Numerical Problems)
- Pressure and Velocity (6 hours)
- The momentum equation
- Pressure-velocity coupling
- Pressure-correction methods
- Exercise (CFD Simulation in Software _ Tutorial Exercise)
- Turbulence (8 hours)
- What is turbulence?
- Momentum transfer in laminar and turbulent flow
- Turbulence notation
- Effect of turbulence on the mean flow
- Turbulence generation and transport
- Important shear flows
- Exercise (CFD Simulation in Software _ Design Problem)
- Pre- and Post-processing (5 hours)
- Stages of a CFD analysis
- The computational mesh
- Boundary conditions
- Flow visualization
Laboratories:
CFD Analysis in OpenFoam / Ansys
- Simulation of vortex shredding over a cylinder
- Simulation of air flow over an airfoil
- Use of UPWIND, CENTRAL Difference scheme for scalar advection-diffusion problem.
References:
- An introduction to Computational Fluid Dynamics – The Finite Volume Method, H. K. Versteeg and W. Malalasekera
- Computational Methods for Fluid Dynamics – Joel H. Ferziger / MilovanPeric
- Computational Fluid Dynamics: Principles and Applications, J. Blazek
- Computational Fluid Dynamics – The Basics with Applications, John D. Anderson, Jr.
- The Physics of Fluid Turbulence – W. D. Mc COMB
Text Book:
- Computational Fluid Dynamics – The basics and applications, Anderson J.D. Jr, (1995), Mcgraw-Hill, New York.
- An introduction to CFD, H. Versteeg and W. Malalasekra, Pearson, Education, 2nd Edition, 2008. Reference Book
- Computational Fluid Dynamic – a practical approach, Jiyuan Tu, Guan Heng Yeoh and Chaoqun Liu, Butterworth -
Heinemann (ELSEVIER), 2008.
- Introduction to Computational Fluid Dynamics, Pradip Niyogi, S.K. Chakrabarthy and M.K. Laha, Pearson Education,
2006.
Evaluation Scheme:
There will be questions covering all the chapters in the syllabus. The evaluation scheme for the question will be as indicated in the table below:
Chapter |
Hours |
Mark distribution* |
1 & 2 |
4 + 6 |
16 |
3 |
8 |
16 |
4 |
8 |
16 |
5 & 7 |
6 + 5 |
16 |
6 |
8 |
16 |
Total |
45 |
80 |
*Note: There may be minor deviation in mark distribution.
|
