Prandtl number is a measure of the__________________?
Correct answer: A. Heat conduction to viscosity of a fluid
- A. Heat conduction to viscosity of a fluid
- B. Cp/Cv of a fluid
- C. Elastic force to pressure force in the fluid flow
- D. Inertial force to elastic force in the fluid flow
Explanation
The Prandtl number is Pr = mu Cp/k, the ratio of momentum diffusivity to thermal diffusivity, so it compares viscous transport with heat diffusion. Option a is the intended choice, although its wording reverses the usual ratio description.
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