Computational Fluid Dynamics Turbulent Flow Structure Online Exam Quiz
Computational Fluid Dynamics Turbulent Flow Structure GK Quiz. Question and Answers related to Computational Fluid Dynamics Turbulent Flow Structure. MCQ (Multiple Choice Questions with answers about Computational Fluid Dynamics Turbulent Flow Structure
For a turbulent flow, which of these is correct?
Options
A : Fluctuating pressure is equal everywhere
B : Fluctuating velocity and pressure are not equal everywhere
C : Fluctuating velocity and pressure are equal everywhere
D : Fluctuating velocity is equal everywhere
Methods of time-averaging statistics are applicable only to ___________
Options
A : Free turbulent structures
B : Boundary layer turbulent structures
C : Coherent turbulent structures
D : Incoherent turbulent structures
Dissipation in turbulent flows converts ____________ energy to ____________ energy.
Options
A : kinetic, internal
B : internal, kinetic
C : kinetic, viscous
D : viscous, kinetic
The structure of free turbulent flow is controlled by ___________
Options
A : Only the local environment
B : The source
C : The sink
D : The source along with the local environment
According to Kolmogorov, the structure of the smallest eddies depends on ___________
Options
A : rate of dissipation of kinetic energy
B : rate of dissipation of turbulent energy
C : rate of convection of kinetic energy
D : rate of convection of turbulent energy
The details about the structure of the fluctuations are contained in ___________
Options
A : sum of different variables
B : sum of different pairs of variables
C : moments of different pairs of variables
D : moments of different variables
Consider the turbulent structure of thin shear layers. Which of these statements is correct?
Options
A : The rates of change of the flow variables are very high in every direction
B : Flow variables do not vary much in any direction
C : The rates of change of the flow variables in the cross-sectional direction are smaller than that of the flow direction
D : The rates of change of the flow variables in the flow direction are smaller than that of the cross-sectional direction
The rotational flow structure of turbulent flows is termed as ___________
Options
A : Turbulent eddies
B : Haida eddies
C : Whirlpool
D : Wake turbulence
The various fluid parcels come into contact in turbulent flow by ___________
Options
A : Turbulent energy transfer
B : Turbulent vorticity
C : Turbulent dissipation
D : Turbulent diffusion
Direct Numerical Simulation of turbulent flows become difficult because of ____________
Options
A : Viscosity scales
B : Time and length scales
C : Energy scales
D : Velocity scales
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