Prandtl and Reynold's analogies are identical for Prandtl number value of__________________?
Correct answer: C. 1
- A. 0
- B. 0.5
- C. 1
- D. 5
Explanation
Prandtl's and Reynolds' heat-transfer analogies coincide when the Prandtl number is unity, because momentum and thermal diffusivities are then equal. This corresponds to equal rates of momentum and heat diffusion.
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