Computational Fluid Dynamics K Omega Model Online Exam Quiz
Computational Fluid Dynamics K Omega Model GK Quiz. Question and Answers related to Computational Fluid Dynamics K Omega Model. MCQ (Multiple Choice Questions with answers about Computational Fluid Dynamics K Omega Model
Which of these is an advantage of the k-? model over the k-? model?
Options
A : Does not depend on the ? value
B : Easier to integrate
C : Can be applied for turbulent boundary layers
D : Has only two extra equations
Using k-? model is difficult for ____________
Options
A : free stream
B : boundary layer flows
C : jet flows
D : mixing layer flows
The values of k and ? must be specified in ___________
Options
A : the inlet boundary conditions
B : the outlet boundary conditions
C : the wall boundary conditions
D : the symmetry boundary conditions
The k-? model adds ___________ to the RANS equations.
Options
A : three variables
B : three equations
C : two variables
D : two equations
What does the variable ? in the k-? model stand for?
Options
A : Turbulence eddy size
B : Turbulence eddy wavelength
C : Turbulence frequency
D : Turbulence large length scale
What is the unit of turbulence frequency?
Options
A : Turbulence frequency is dimensionless
B : 1/s2
C : s
D : 1/s
Which of these could not be modelled using the k-? model, but can be modelled using the k-? model?
Options
A : Turbulent jet flows
B : Adverse pressure gradients in turbulent flows
C : Boundary layer on turbulent flows
D : Turbulent free flows
Represent the turbulent dynamic viscosity in terms of k and ?.
Options
A : ? ?/k
B : ? k/?
C : ? k2/?
D : ? ?/k2
Represent the length scale in terms of k and ?.
Options
A : ?/k
B : k/?
C : ?k/?
D : ?/?k
If k is the turbulent kinetic energy, what is the relationship between the turbulence frequency (?) and dissipation rate of the turbulent kinetic energy (?)?
Options
A : ?=?/k
B : ?=k/?
C : ?=?2/k
D : ?=k2/?
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