List of possible questions ay 2023 20024

Pagina 1

Question 1 Introduce the Reynolds -Averaged Navier -Stokes methodology and the Boussinesq hypothesis. The k-epsilon family turbulence model. Discuss the origin of k-epsilon transport equations and the boundary conditions. Present its range of applicability, strengthens and weakness. Question 2 Introduce the Reynolds-Averaged Navier-Stokes methodology and the Boussinesq hypothesis. The RSM turbulence model. Discuss the rational of RSM transport equations and the boundary conditions. Present its range of applicability, strengthens and weakness. Question: 3 Finite volume method for 1-D steady-state convection diffusion equation with source contribution. Applied the central difference schemes to obtain the algebraic system of equations. Discuss the issues related to conservativeness, boundedness and transportiveness. Question: 4 Properties of discretisation schemes: Conservativeness, Boundedness and Transportiveness. The properties of Central differencing scheme versus Upwind differencing scheme. Question: 5 Solution algorithms for pressure velocity coupling. Present (in detail) SIMPLE or PISO algorithm. Discuss about the guidelines for application of these algorithms. Question: 6 Error and uncertainty in CFD modelling. How to manage them. Present and discuss the Grid Convergence Index method. Question: 7 Discuss the numerical diffusion in unstructured grid. Present the cross-diffusion term. Question: 8 Finite volume method for 1-D un-steady convection equation. Recall the discretized form and discuss the diffusion and dispersion issues. Question: 9 Governing equations for reacting flow. Define the reaction rate. The combustion modelling with focus on fast chemistry model. Question: 10 Governing equations for radiative heat transfer. Present the different models and their…