
Quiz on Computational Fluid Dynamics
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary focus of the course mentioned in the text?
Thermodynamics
Computational Fluid Dynamics
Structural Analysis
Material Science
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the recommended y+ value for the first cell when using wall functions?
y+ = 1
30 < y+ < 300
y+ < 30
y+ > 300
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which turbulence model is recommended when resolving the viscous sublayer?
RNG k-ε model
SST k-ω model
k-ω model
k-ε model
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the effect of increasing the Reynolds number on the logarithmic region?
It decreases
It remains constant
It extends to higher values of y+
It becomes negligible
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of wall functions in CFD?
To resolve the entire flow field
To increase computational speed
To determine conditions at the wall
To simplify turbulence modeling
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the recommended first grid cell height for a y+ of approximately 50?
10 mm
0.5 mm
1 mm
0.1 mm
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should be done if the viscous sublayer is being resolved?
Ignore turbulence modeling
Use k-ω models with Enhanced Wall Treatment
Use k-ε models
Use wall functions
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