This set of Computational Fluid Dynamics Multiple Choice Questions & Answers (MCQs) focuses on “Relaxation – Residuals”. 1. Which of these equations can be written in the residual form? a) The discretized equations b) The governing equations c) The PDEs d) The ODEs 2. The standard form of the equations is solved for __________ and … Read more
This set of Computational Fluid Dynamics Multiple Choice Questions & Answers (MCQs) focuses on “Under-Relaxation”. 1. Relaxation techniques are used to ensure __________ a) convergence b) stability c) accuracy d) boundedness 2. The relaxation techniques slow down the __________ a) whole iterative process b) effect of the sources c) effect of the neighbouring elements and … Read more
This set of Computational Fluid Dynamics Multiple Choice Questions & Answers (MCQs) focuses on “Source Term Discretization”. 1. Which of these transport phenomena do not involve any source term? a) Heat conduction b) Heat radiation c) Turbulence models d) Chemical reactions 2. Which of these physical properties of the flow problems is affected by the … Read more
This set of Computational Fluid Dynamics Problems focuses on “Approaches for Non-uniform Time Steps”. 1. Discretization of the transient term is not affected by uniform or non-uniform grids when _________ a) the scheme is downwind b) the scheme is upwind c) the scheme is first-order d) the scheme is second-order 2. For which of these … Read more
This set of Computational Fluid Dynamics Questions & Answers for Exams focuses on “Transient Flows – Second Order Finite Volume Schemes”. 1. What is the equivalent of (ρC ΦC)t+Δt/2 using the Crank-Nicolson scheme for finite volume approach? a) (ρC ΦC)t+(ρC ΦC)t+Δ t b) (ρC ΦC)t+(ρC ΦC)t+Δt c) (ρC ΦC)t-(ρC ΦC)t+Δt d) (ρC ΦC)t-(ρC ΦC)t+Δt 2. … Read more
This set of Computational Fluid Dynamics Multiple Choice Questions & Answers (MCQs) focuses on “Transient Flows – First Order Finite Volume Schemes”. 1. The discretization of the transient term using the finite volume approach is more like the spatial discretization of __________ a) the convection term b) the diffusion term c) the source term d) … Read more
This set of Computational Fluid Dynamics Multiple Choice Questions & Answers (MCQs) focuses on “Transient Flows – Euler Schemes”. 1. Which of these equations give the derivative of the function T at time t as given by the Crank-Nicolson scheme? a) b) c) d) 2. The approximation of the derivative taken by the Crank-Nicolson scheme … Read more
This set of Computational Fluid Dynamics Multiple Choice Questions & Answers (MCQs) focuses on “Transient SIMPLE and PISO Algorithms”. 1. The SIMPLE algorithm used for transient problems is __________ a) implicit and iterative b) implicit and direct c) explicit and iterative d) explicit and direct 2. Which of these statements is correct about the transient … Read more
This set of Computational Fluid Dynamics Multiple Choice Questions & Answers (MCQs) focuses on “Transient Flows – Runge Kutta Method”. 1. The second-order Runge-Kutta method uses __________ as a predictor. a) backward order method b) forward Euler method c) midpoint rule d) multipoint method 2. Which of these correctors does the second-order Runge-Kutta method use? … Read more
This set of Computational Fluid Dynamics Multiple Choice Questions & Answers (MCQs) focuses on “Transient Flows – Predictor-Corrector and Multipoint Methods”. 1. The predictor-corrector method is a combination of ______________ a) midpoint and trapezoidal rules b) backward Euler method and Trapezoidal rule c) implicit and explicit methods d) forward and backward Euler methods 2. In … Read more
