Advance Computational Fluid Dynamics — Winter 2025

Define CFD? Why it is widely used as a research tool now days?

Explain the steps for CFD Pre-processing and Post Processing.

Derive an energy equation in non-conservation form.

Difference between Structured and Unstructured grid.

Define Multi block structured grid generation.

Write a note on Experimental, Theoretical and Numerical approach in CFD.

Difference between FVM, FDM and FEM.

Explain adaptive grid.

Explain algebraic methods in grid formation.

Explain in detail about Elliptic, Parabolic and Hyperbolic partial differential equations.

Explain inlet and outlet boundary condition.

Explain in brief about Bowyer Algorithm.

Explain Delalunay triangulation method for unstructured grid generation.

Write a short note on important features of Turbulent flow.

Explain Dirichlet boundary condition with suitable example.

Explain in detail about the different boundary conditions applied to fluid flow domain.

What do you mean by Mixing length model?

Explain in brief Homogeneous turbulence and isotropic turbulence.

Explain K-ɛmodel and RANS model.

Write a note on the turbulence flow modeling.

Differentiate between explicit and implicit approach.

What is the step wise procedure for solving pressure based CFD problem?

How does CFD code works?

Explain importance of Eddy viscosity model.

Derive vorticity transport equation.