2. Consider a black 60X60 cm plate that has 0°C atmospheric air forced over it at a velocity of 0.50 m/s.

The plate is placed in a large room whose walls are at 30°C, and the backside of the plate is perfectly

insulated. You may consider the plate to be a blackbody for thermal radiation.

a. Calculate the plate temperature in the case of tangential airflow over the plate, for which the average

Nusselt number can be estimated from Nu, = 0.664 Re Pr

1/2Pr¹/3, where L is the length of the plate in the

flow direction.

b.

Calculate the plate temperature for airflow normal to the plate.

c. Plot the plate temperature as a function of the free stream velocity in the two cases.