August 4, 2020 at 6:38 pm

SaiD

Ansys Employee

Hi,nHeat transfer rate due to Convection is given by Q = h*A*(Ts - Tb), where Q=rate of heat transfer, h=film coefficient, A=Area of body in contact with fluid, Ts=Surface temperature (of the surface in contact with the fluid) and Tb=bulk fluid temperature.nNote the A in the equation, which implies that you need a surface area to be defined. Since an edge has zero area, convection boundary condition cannot be applied to it. In the Edx lectures, are you sure it wasn't a 2D problem with a fixed thickness defined in the third direction?.Hope this helps,nSain