Heat transfer in the laminar sub-layer in case of a liquid flowing through a pipe, is mostly by__________________?
Correct answer: B. Conduction
- A. Eddies current
- B. Conduction
- C. Convection
- D. None of these
Explanation
The laminar sub-layer is a very thin region near the pipe wall where turbulent mixing is strongly suppressed. Heat crosses this layer mainly by molecular conduction rather than by eddy motion.
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