Computational Fluid Dynamics Characteristics Turbulent Flows Online Exam Quiz
Computational Fluid Dynamics Characteristics Turbulent Flows GK Quiz. Question and Answers related to Computational Fluid Dynamics Characteristics Turbulent Flows. MCQ (Multiple Choice Questions with answers about Computational Fluid Dynamics Characteristics Turbulent Flows
Transfer of kinetic energy from large eddies to smaller eddies is called as _________
Options
A : Energy cascade
B : Momentum cascade
C : Energy decomposition
D : Momentum decomposition
Large turbulent eddies extract energy from the mean flow by this process.
Options
A : Energy decomposition
B : Eddy extracting
C : Vortex stretching
D : Substantial variation
Eddies in turbulent flows result in _________
Options
A : high diffusion coefficients
B : less diffusion coefficients
C : high value of the source term
D : low value of the source term
Which of these is correct for large eddies?
Options
A : High viscosity and linear momentum are conserved
B : Low viscosity and linear momentum are conserved
C : High viscosity and angular momentum are conserved
D : Low viscosity and angular momentum are conserved
Which of these is highly energetic?
Options
A : Kolmogorov micro-scale eddies
B : Small eddies
C : Medium eddies
D : Large eddies
The mathematical technique used to represent the random nature of the turbulent flow.
Options
A : RANS
B : Reynolds decomposition
C : Parallel decomposition
D : DNS
Represent the velocity of turbulent flow using Reynolds decomposition.
Options
A : Steady velocity + Mean velocity
B : Steady velocity + Fluctuating component of velocity
C : Variation in velocity + Fluctuating component of velocity
D : Mean variation + Fluctuating component of velocity
What is Reynolds stress?
Options
A : Stress due to velocity fluctuations
B : Tangential component of pressure
C : Stress due to pressure fluctuations
D : Normal component of viscosity
Large eddies are _________
Options
A : two-dimensional and isotropic
B : two-dimensional and isotropic
C : three-dimensional and anisotropic
D : two-dimensional and anisotropic
Reynolds number gives the relative importance of __________
Options
A : viscous force and tangential force
B : inertia force and viscous force
C : inertia force and pressure force
D : pressure force and viscous force
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