Chapter 7, Problem 7.62P

Determine the convection heat loss from both the top and the bottom of a flat plate at $T_s=80°\text{C}$ with air in parallel flow at $T_{\infty }=25°\text{C,}{u}_{\infty }=3\text{m/s}\text{.}$ The plate is $t=1\text{mm}$ thick, $L=25\text{mm}$ long, and of depth $w=50\text{mm}\text{.}$ Neglect the heat loss from the edges of the plate. Compare the convection heat loss from the plate to the convection heat loss from an $L_c=50\text{-mm-}$ long cylinder of the same volume that of the plate. The convective conditions associated with the cylinder are the same as those associated with the plate