Dittus-Boelter equation used for the determination of heat transfer co-efficient is valid ___________________?
Correct answer: C. For fluids in turbulent flow
- A. For fluids in laminar flow
- B. When Grashoff number is very important
- C. For fluids in turbulent flow
- D. For liquid metals
Explanation
The Dittus-Boelter correlation is an empirical relation for forced convection in fully developed turbulent flow, commonly for smooth tubes. It is not a laminar-flow or natural-convection correlation.
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