Feser's New Lineup

[meanmoe]

it's power per unit of length per unit temperature.... where the length is the distance through the material. IIRC unless you assume 1D like Kaldskryke was talking about it becomes a differential. The heat equation you'd end up with a dA and a dT or dx and dT. If you want to look at 1D conduction, you can follow the link on the bottom of that page... http://www.engineeringtoolbox.com/co...fer-d_428.html That'll get you 1D conduction to the surfaces of the boundary materials. Then it becomes a different problem though because of the convection from the surface to the fluid boundary layer and then to the fluid freestream. As Kaldskryke said. The freestream isn't as tough, but the boundary layer part is. You could assume no boundary layer, but I really don't know how good of an assumption that is. I'm hoping that Kaldskryke tosses us an example.

the equation caller Fourier's Law in that link assumes a single material... for the conduction problem the conductive heat flow is equal to the total delta T / the sum of the resistences in the case of multiple materials... where the resistances are each dx/(k * A) ... The numbers you threw out are 'k's and A is area. Assume dx to be linear distance.