Turbulent Boundary Layer - MCQs with Answers

Turbulent Boundary Layer – MCQs with Answers

1. Assume a turbulent flow of a fluid on a flat plate. A very thin region near the plate surface is called as

a. laminar buffer layer
b. laminar sublayer
c. laminar turbulent layer
d. none of the above

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2. The layer above the laminar sublayer with some turbulence and still having importance of viscous action is called as

a. sub-sublayer
b. turbulent layer
c. buffer layer
d. none of the above

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3. The layer through which the momentum and energy transfer take place via the movement of macroscopic lumps of matter from one region to another is called as

a. the laminar sublayer
b. the buffer layer
c. the turbulent layer
d. none of the above

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4. What is used instead of ν, in turbulent boundary layer condition?

a. eddy diffusivity for momentum
b. eddy diffusivity for force
c. eddy diffusivity for heat
d. none of the above

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5. The eddy properties are used in turbulent boundary layer condition because

a. the eddy properties may be small compared to molecular properties
b. the eddy properties may be large compared to molecular properties
c. the eddy properties may be small or may be large compared to molecular properties, but never equals to molecular properties
d. none of the above

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