FEM ConstraintHeatflux

Description
Prescribes convective heat flux load to a surface at a temperature T with a film coefficient h and with the environment (sink) temperature T0. The convective heat flux q will satisfy: q = h(T -T0)

Usage

 * 1) There are several ways to invoke the command:
 * 2) * Press the button.
 * 3) * Select the option from the menu.
 * 4) In the 3D view select the face(s) the constraint should be applied to.
 * 5) Enter the desired surface temperature, heat transfer coefficient and environment temperature.