1. Explain the significance of heat transfer by convection between a rotating body and a surrounding fluid. How is the peripheral speed Reynolds number defi ned? What is its critical value? 2. What is...

1. Explain the significance of heat transfer by convection between a rotating body and a surrounding fluid. How is the peripheral speed Reynolds number defi ned? What is its critical value?

2. What is rotational Reynolds number for a disk? What is its critical value?