Reynold's analogy states that (where, St = Stanton number f = friction factor) ?
Correct answer: A. St = f/2
- A. St = f/2
- B. St = f/4
- C. St = 4f
- D. St = f1/2
Explanation
Reynolds analogy equates heat and momentum transfer as St = f/2 when f denotes the Fanning friction factor. If a Darcy friction factor were used, the numerical form would differ, which is why the friction-factor convention matters.
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