Computational Fluid Dynamics Exam Online Exam Quiz
Computational Fluid Dynamics Exam GK Quiz. Question and Answers related to Computational Fluid Dynamics Exam. MCQ (Multiple Choice Questions with answers about Computational Fluid Dynamics Exam
What is the equivalent of (?C ?C)t+?t/2 using the Crank-Nicolson scheme for finite volume approach?
Options
A : frac{1}{2}(?C ?C)t+frac{1}{2}(?C ?C)t+? t
B : (?C ?C)t+(?C ?C)t+?t
C : (?C ?C)t-(?C ?C)t+?t
D : frac{1}{2}(?C ?C)t–frac{1}{2}(?C ?C)t+?t
What is the equivalent of (?C ?C)t+?t/2 using the second-order upwind Euler scheme for finite volume approach?
Options
A : frac{3}{2} (?C ?C)t+(?C ?C)t-?t
B : (?C ?C)t+frac{1}{2} (?C ?C)t-?t
C : frac{3}{2} (?C ?C)t+frac{1}{2} (?C ?C)t-? t
D : frac{1}{2}(?C ?C)t+frac{1}{2} (?C ?C)t-? t
Which of these terms cause instability in the Crank-Nicolson scheme when used for finite volume approach?
Options
A : Anti-diffusion term
B : Anti-dispersive term
C : Diffusion term
D : Dispersive term
The stability of the Crank-Nicolson scheme for finite volume approach is constrained by ________
Options
A : CFL number
B : Peclet number
C : Time-step size
D : Spatial grid size
The results using the Crank-Nicolson scheme for finite volume approach can be reformulated using the ________
Options
A : implicit first-order Euler scheme
B : implicit and explicit first-order Euler schemes
C : explicit first-order Euler scheme
D : central difference scheme
How many numerical diffusion terms does the second-order upwind Euler scheme have?
Options
A : Infinity
B : No diffusion term
C : One term
D : Two terms
Which of these time-steps are used to approximate the value at time-step t-frac{Delta t}{2} using the Crank-Nicolson scheme for finite volume approach?
Options
A : t and t+? t
B : t and t-? t
C : t and t-frac{Delta t}{2}
D : t and t+frac{Delta t}{2}
Which of these time-steps are needed to approximate the value at time-step frac{Delta t}{2} using the second-order upwind Euler scheme for finite volume approach?
Options
A : t-frac{Delta t}{2} and t-2? t
B : t and t-? t
C : t-? t and t-2? t
D : t and t-2? t
The numerical dispersion term of the second-order upwind Euler scheme is of ____________
Options
A : third-order
B : second-order
C : first-order
D : no dispersion
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