The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe, where the wall heat flux is constant, is__________________?
Correct answer: B. 4.36
- A. 2.36
- B. 4.36
- C. 120.36
- D. Dependent on NRe only
Explanation
For fully developed laminar flow in a circular tube with constant wall heat flux, the standard Nusselt number is Nu = 4.36. The value 3.66 applies to the constant wall-temperature condition.
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