I am applying fluent5.4 to simulate the burning of solid fuel .The solid fuel is vaporized to gas,which will react with O2 on boundary layer.My task is to get the fuel surface regression rate. Vaporizing of the fuel is primarily sustained by the rate of heat transfering from gas to the surface by conduction and radiation. The surface regression rate depends on the fuel surface tmperature.
Now I don't how to define the boundary condition of the interface between the compressible fluid and fuel. I tried to use two-side wall boundary between the compressible fluid and fuel.But the result is not good. How can I get the fuel surface temperature? If I want to use one energy conversation equation as boundary condition between the compressible fluid and fuel. can Fluent do it? Thank you.
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