hi everybody... i am trying to simulate a forced convection heat transfer problem with air trying to cool a solid block heat generator. i am having trouble giving the condition at the solid fluid interface..... i want to know wat boundary condition has to be given at this boundary.... if i give it as wall it will ask for heat flux or temperature or heat transfer coeff. nothing is known as of now.... i want a temp. continuity condition... please help me.... thanks in advance guys...