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OpenFOAM Test – Spoken Tutorial Quiz Answers
Q1. Consider the following single block wedge with vertices 0 to 5 which have been numbered randomly Which of the following is the right way to define the vertices of the block in a blockmeshdict file ?
- (A) hex (0 1 4 3 5 2 2 5)
- (B) hex (0 1 2 3 4 5)
- (C) (0 3 4 1 5 5 2 2)
- (D) None of these
Answer:- (A) hex (0 1 4 3 5 2 2 5)
Q2. For faces in geometry omitted from boundary list in a blockMeshDict file ?
- (A) blockMesh defines them in patch defaultFaces of type patch
- (B) blockMesh defines them in patch defaultFaces of type wallblock
- (C) Mesh defines them in patch defaultFaces of type empty.
- (D) User needs to define separate patch for faces omitted
Answer:- (C) Mesh defines them in patch defaultFaces of type empty.
Q3. ParaView application is based on which of the following library/ies?
- (A) ITK
- (B) VTK
- (C) KTK
- (D) None of these
Answer:- (B) VTK
Q4. Which of the following solvers are not used as combustion solvers ?
- (A) XiFoam
- (B) reactingFoam
- (C) engineFoam
- (D) mdFoam
Answer:- (D) mdFoam
Q5. What is the command to view the content inside a folder using command terminal in Linux?
- (A) ls
- (B) ls -h
- (C) ls – l
- (D) ls -l
Ans:- (D) ls -l
Q6. What does OpenFOAM stand for ?
- (A) Open Source Field Operation And Manipulation
- (B) Open Field Operations And Manipulation
- (C) Open Source Fluid Operation And Manipulation
- (D) Open Source Fluid Optimization And Management
Ans:- (A) Open Source Field Operation And Manipulation
Q7. Where is the kinematic viscosity of a fluid in a solver defined in OpenFOAM?
- (A) Transportproperties file
- (B) Turbulentproperties file
- (C) Nu file
- (D) None of these
Ans:- (A) Transportproperties file
Q8. Entering the points for boundary patches in OpenFOAM should be in
- (A) clockwise
- (B) anticlockwise
- (C) both clockwise and anticlockwise
- (D) None of these
Ans:- (C) both clockwise and anticlockwise
Q9. renumberMesh command _________.
- (A) Compute Mesh
- (B) To reduce the bandwidth, reading and renumbering all fields from all the time directories
- (C) Calculates number of cells
- (D) Gives appropriate number to mesh
Answer:- (B) To reduce the bandwidth, reading and renumbering all fields from all the time directories
Q10. What are the shortcut keys to open a command terminal/command prompt in Linux?
- (A) CTRL + ALT + DEL
- (B) CTRL + ALT + K
- (C) CTRL + ALT + T
- (D) None of these
Ans:- (C) CTRL + ALT + T
OpenFOAM Test – Spoken Tutorial Quiz Answers – All the Answers Provided on this page are Correct if you think there is any mistake, Please comment, we will update it soon.
Q11. In which of the following cases can the no slip condition be used for boundary ?
- (A) To fix the velocity to zero at walls
- (B) When mesh size is much bigger than the boundary layer thickness
- (C) Symmetry surfaces
- (D) To fix the patch-normal component to a fixed value
To fix the patch-normal component to a fixed value
Ans:- (A) To fix the velocity to zero at walls
Q12. Measurement of temperature is based on which law of thermodynamics?
- (A) Zeroth law of thermodynamics
- (B) First law of thermodynamics
- (C) Second law of thermodynamics
- (D) Third law of thermodynamics
Ans:- (A) Zeroth law of thermodynamics
Q13. For a 2D geometry in OpenFOAM, we need to give a unit thickness value in the z-axis.
- (A) True
- (B) False
Ans:- (A) True
Q14. Can OpenFOAM run on Windows platform?
- (A) True
- (B) False
(A) True
Q15. Can structured mesh be created using Gmsh alone? How?
- (A) No. External software is required
- (B) Yes. Using transfinite lines and surfaces
- (C) Yes. By extruding the 2D mesh
- (D) Yes. By using symmetry elements
Ans:- (B) Yes. Using transfinite lines and surfaces
Q16. How do we specify the convergence criteria in the fvSolution file?
Select one:
- (A) residualControl
{
p 1e-7;
U 1e-8;
} - (B) convergenceControl
{
p 1e-7;
U 1e-8;
} - (C) solutionControl
{
p 1e-7;
U 1e-8;
} - (D) toleranceControl
{
p 1e-7;
U 1e-8;
}
Ans:- (A)
Q17. Why do we use Paraview?
- (A) Visualize the results obtained from OpenFOAM
- (B) Save the results obtained from OpenFOAM
- (C) Delete the results obtained from OpenFOAM
- (D) None of these
Ans:- (A) Visualize the results obtained from OpenFOAM
Q18. Which of these is not true about PyFoam Template Files?
- (A) They can be substitute variables in any OpenFOAM Files
- (B) They can only be used to substitute variables in OpenFOAM files like p and U.
- (C) Python code can be executed inside a template file
- (D) Template files are converted to final files from the command line
Ans:- (B) They can only be used to substitute variables in OpenFOAM files like p and U.
Q19. What does fvSolution file in system folder contain?
- (A) Under-relaxation controls
- (B) Mesh controls
- (C) Solving method
- (D) None of these
Ans:- (C) Solving method
Q20. For creating edges in OpenFOAM, in the blockmeshdict file, the edges are kept empty.
- (A) True
- (B) False
Ans:- (A) True
Q21. What does fvschemes file in system folder contain?
- (A) Solver schemes
- (B) Schemes for skewness correction
- (C) Limited schemes for scalars
- (D) None of these
Ans:-
OpenFOAM Test – Spoken Tutorial Quiz Answers – All the Answers Provided on this page are Correct if you think there is any mistake, Please comment, we will update it soon.
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