Question

Air flows along a thin flat plate 1 m wide and 1.5m long at a velocity of 1 m/s. The free stream temperature is 4ºC. Calculate the amount of heat that must be supplied to plate in order to maintain it at a uniform temperature of 50ºC.​

Answer 1

Given:

Fluid temperature T¥ = 40°C

Length L = 0.9 m

Velocity U = 3 m/s.

Solution:

Properties of air at 40°C:

r=1.128 Kg/m3

n= 16.96 ´10-6 m2 / s Pr =0.699

K = 26.56 ´10-3 W/mK