A vertical pipe of 10 cm diameter and 3 m long, at a surface temperature of 100°C, is in a room where the air is at 20°C. What is the rate of heat loss per unit length of the pipe ? Explain velocity...

A vertical pipe of 10 cm diameter and 3 m long, at a surface temperature of 100°C, is in a room where the air is at 20°C. What is the rate of heat loss per unit length of the pipe ?

Explain velocity developing region and hydrodynamic entry length for flow in a circular tube.