how to implement a boundary conditions on multiphase boundary in fluent?
I'm having a bucket filled with water and oil on top of the water at high temperatures. That makes the problem with 3 phases (water, oil, and air). oil on top of the water and subsequently air on top of the oil. Schematic as shown below ( Phase ID: Blue = air, red = oil, green = water )
I use 'patch' for marking different phases on the cell zone.
I want to apply a boundary condition on the top surface of the oil layer, i.e at the oil-air interface.
e.g = Temperature radiation BC, air above is at 300K and Oil is at 500K.
Thus a mixed temperature boundary condition : (I) Radiation with external emissivity 0.7, so that heat dissipates to the ambient air, (ii) Convection with h= 20 W/m2 on the oil-air interface.