Computational Fluid Dynamics Mcqs Online Exam Quiz
Computational Fluid Dynamics Mcqs GK Quiz. Question and Answers related to Computational Fluid Dynamics Mcqs. MCQ (Multiple Choice Questions with answers about Computational Fluid Dynamics Mcqs
The Reynolds number of a 3-D turbulent flow is 104. What is the number of time-steps needed?
Options
A : 100
B : 1000
C : 104
D : 105
The Reynolds number of a 3-D turbulent flow is 104. What is the number of grid points needed?
Options
A : 103
B : 104
C : 106
D : 109
Which of these methods which are used for time advance discretization in DNS needs more computation per time step?
Options
A : Adams-Bashforth
B : Runge-Kutta method
C : Leapfrog
D : Newton Raphson method
DNS method is applicable for __________
Options
A : Complex geometry and low Reynolds number
B : Simple geometry and low Reynolds number
C : Simple geometry and high Reynolds number
D : Complex geometry and high Reynolds number
Which of these equations is the starting point of the DNS method?
Options
A : Continuity and momentum equations of homogeneous turbulent flow
B : Continuity and momentum equations of incompressible turbulent flow
C : Momentum and energy equations of incompressible turbulent flow
D : Momentum and energy equations of homogeneous turbulent flow
For which of these purposes, the DNS method is not suitable?
Options
A : Designing
B : Simulation of the production of aerodynamic noise
C : Effects of compressibility on turbulence
D : To understand the mechanism of turbulence
When is the DNS method apt?
Options
A : For complex flows
B : For design purposes
C : For precise details
D : For economic simulation
Which of these is the simplest type of turbulent flows?
Options
A : Homogeneous anisotropic turbulence
B : Incompressible turbulent flows
C : Homogeneous isotropic turbulence
D : Compressible turbulent flows
The grid size and time-step size of the DNS method depends upon the _____________
Options
A : Schmidt number
B : Peclet number
C : Nusselt number
D : Reynolds number
DNS can solve _____________
Options
A : transient 3-D equations
B : steady-state 3-D equations
C : transient 2-D equations
D : steady-state 2-D equations
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