# Computational Fluid Dynamics Questions and Answers

Our 1000+ Computational Fluid Dynamics questions and answers focuses on all areas of Computational Fluid Dynamics subject covering 100+ topics in Computational Fluid Dynamics. These topics are chosen from a collection of most authoritative and best reference books on Computational Fluid Dynamics. One should spend 1 hour daily for 2-3 months to learn and assimilate Computational Fluid Dynamics comprehensively. This way of systematic learning will prepare anyone easily towards Computational Fluid Dynamics interviews, online tests, examinations and certifications.

**Highlights**

– 1000+ Multiple Choice Questions & Answers in Computational Fluid Dynamics with explanations

– Every MCQ set focuses on a specific topic in Computational Fluid Dynamics Subject

**Who should Practice these Computational Fluid Dynamics Questions?**

– Anyone wishing to sharpen their knowledge of Computational Fluid Dynamics Subject

– Anyone preparing for aptitude test in Computational Fluid Dynamics

– Anyone preparing for interviews (campus/off-campus interviews, walk-in interview and company interviews)

– Anyone preparing for entrance examinations and other competitive examinations

– All – Experienced, Freshers and Students

**Here’s list of Questions & Answers on Computational Fluid Dynamics Subject covering 100+ topics:**

#### 1. Questions & Answers on Philosophy of Computational Fluid Dynamics

The section contains questions and answers on cfd philosophy, research and design tool, computational fluid dynamics applications, cfd advantages and disadvantages.

Philosophy Research and Design Tool Solution Procedure |
Applications Advantages and Disadvantages |

#### 2. Questions on Some Simple CFD Techniques

The section contains questions on cfd softwares and implicit techniques direction.

CFD Softwares | Alternating Direction Implicit Techniques |

#### 3. Questions & Answers on Governing Equations of Fluid Dynamics

The section contains questions and answers on reynolds transport theorem, state equations, flow models, eulerian and lagrangian conservation laws, velocity divergence, substantial derivative, continuity equations on finite control volume and infinitesimally small element, momentum equation, stress and strain tensor, energy equations on thermal properties, euler and navier stokes equation.

#### 4. Questions on Boundary Conditions

The section contains questions on boundary conditions, boundary conditions on inlet, outlet, symmetry, constant pressure and periodic.

Boundary Conditions Boundary Conditions (Inlet and Outlet) |
Boundary Conditions (Wall and Symmetry) Boundary Conditions (Constant Pressure and Periodic) |

#### 5. Questions & Answers on Mathematical Behaviour of Partial Differential Equations

The section contains questions and answers on partial differential equation, pde classification, well posed problems, behaviour of elliptic, parabolic and hyperbolic equations.

#### 6. Questions on Basic Aspects of Discretization, Grid Generation with Appropriate Transformation

The section contains questions on discretization, thomas algorithm, discretization consistency, stability and convergence, conservativeness, boundedness, grid generation, errors and stability analysis.

Discretization Thomas Algorithm Consistency Stability Convergence |
Conservativeness Boundedness Transportiveness Errors and Stability Analysis Grid Generation |

#### 7. Questions & Answers on Numerical Methods

The section contains questions and answers on numerical methods components, mesh topology, discretization approaches, variable arrangements and velocity components, direct and iterative solvers for discretized equations, coupled and non linear equations solution.

#### 8. Questions on Finite Difference Methods

The section contains questions on finite difference methods and its errors, explicit and implicit finite difference methods, spectral methods, lax-wendroff and macCormack’s techniques.

Finite Difference Method Explicit and Implicit Finite Difference Methods Spectral Methods |
Lax-Wendroff Technique MacCormack’s Technique Errors in Finite Difference Approximations |

#### 9. Questions & Answers on Finite Volume Methods

The section contains questions and answers on finite volume method, accuracy order, fvm arrangement, fvm structured and unstructured grids, fvm elements types and geometry.

Finite Volume Method Order of Accuracy Variable Arrangement in FVM Structured Grids in FVM |
Unstructured Grids in FVM Types of FVM Elements The Geometry of FVM Elements |

#### 10. Questions on Turbulence Modelling

The section contains questions on turbulence modelling, turbulent flows characteristics and structure, turbulent scale, kolmogorov energy spectrum, free and wall turbulence, turbulent viscosity, turbulent schmidt number, turbulent boundary layer, averaging rules and methods, large eddy simulation, reynolds averaged navier-stokes model, k-epsioln and k-omega model, spalart allmaras model, rng k epsilon, realizable k epsilon, shear stress transport model, y+ concept, turbulence model boundary conditions, filtering and sub grid models.

#### 11. Questions & Answers on High Resolution Schemes

The section contains questions and answers on high resolution schemes, normalized variable formulation, convection boundedness criterion, tvd framework, high resolution schemes correction, downwind and normalized weighing factor.

High-Resolution Schemes Normalized Variable Formulation Convection Boundedness Criterion |
TVD Framework Deferred Correction for High-Resolution Schemes Downwind and Normalized Weighing Factor |

#### 12. Questions on Diffusion Problem

The section contains questions on 1-d steady state diffusion, multi dimensional steady state diffusion, discretization equation rules, orthogonal and non-orthogonal grids, green gauss and least square gradient for cartesian grids.

#### 13. Questions & Answers on Convection-Diffusion Problems

The section contains questions and answers on upwind and downwind schemes, central and hybrid difference schemes, second order upwind scheme, error sources, quick and fromm scheme.

Upwind and Downwind Schemes Central Difference Schemes Hybrid Differencing Scheme Second Order Upwind Scheme |
QUICK Scheme FROMM Scheme Error Sources |

#### 14. Questions on Incompressible Flows & Compressible Flows

The sections covers questions on staggered grid, navier stokes equation special features, pressure calculations, rhie-chow interpolation, conservation equation, simple, simpler, simplec and piso algorithms.

#### 15. Questions & Answers on Transient Flows

The section contains questions and answers on two level methods, predictor corrector and multipoint methods, runge kutta method, transient simple and piso algorithms, crank nicolson and adams moulton schemes, non uniform time steps approaches, first and second order finite volume schemes.

#### 16. Questions on Discretization of the Source Term & Relaxation

The section contains questions on source term discretization, under relaxation and residuals.

Source Term Discretization Under-Relaxation |
Residuals |

Here’s the list of Best Reference Books in Computational Fluid Dynamics.

**Wish you the best in your endeavor to learn and master Computational Fluid Dynamics!**