Computational Fluid Dynamics Objective Online Exam Quiz
Computational Fluid Dynamics Objective GK Quiz. Question and Answers related to Computational Fluid Dynamics Objective. MCQ (Multiple Choice Questions with answers about Computational Fluid Dynamics Objective
If we are solving a k-? model, the values of k and ? _________
Options
A : are either specified or estimated at the inlet
B : are either specified or estimated at the outlet
C : need not be specified or estimated anywhere
D : are not estimated
The convective fluxes in the inlet boundary layer _________
Options
A : are specified
B : can be calculated
C : should be approximated
D : are not necessary
The diffusive fluxes in the inlet boundary conditions _________
Options
A : are specified
B : can be calculated
C : are not necessary
D : should be approximated
The mass flux out should be equal to the mass flux in. This is in accordance with _________
Options
A : energy conservation
B : momentum conservation
C : continuity condition
D : flux conservation
_________ is fixed at one inlet node and pressure correction is set to _________ in that node.
Options
A : Gauge pressure, one
B : Absolute pressure, one
C : Gauge pressure, zero
D : Absolute pressure, zero
Usually, in the inlet boundary conditions ___________ are known.
Options
A : gradients of flow properties
B : diffusive fluxes of properties
C : convective fluxes of properties
D : flow properties
Which of these is the best practice regarding outlet boundaries?
Options
A : Outlet boundaries should be at the exact outlet of the geometry
B : Outlet boundaries should be set as close as possible to the inlet boundaries
C : Outlet boundaries should be set as far as possible to the physical geometry
D : Outlet boundaries should be set as close as possible to the physical geometry
Which of these statements is false regarding the pressure correction at boundaries?
Options
A : Pressure reference is set at the inlet boundaries
B : Pressure reference is set at the outlet boundaries
C : The link to the inlet boundary side is suppressed
D : The link to the outlet boundary side is suppressed
An extra grid is used before the physical boundary. What is the use of this grid?
Options
A : To store the inlet boundary values
B : To solve the discretized equation
C : To calculate the inlet boundary values
D : To solve the system analytically
Which of these following is used to match the outlet and inlet flow velocities?
Options
A : uN,j = uN-1,j×frac{M_{in}}{M_{out}}
B : uN-1,j = uN,j×frac{M_{in}}{M_{out}}
C : uN-1,j = uN,j×frac{M_{out}}{M_{in}}
D : uN,j = uN-1,j×frac{M_{out}}{M_{in}}
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