The discussion centers on the heat flux through a non-homogeneous bar with thermal conductivities k1 and k2 at two different temperatures. It is established that one can approximate the heat flux as if it were passing through a homogeneous bar with a weighted mean conductivity of k1 and k2. However, the configuration of the bar—whether the thermal conductivities are in series or parallel—must be clarified to fully validate this approximation.
PREREQUISITESThermal engineers, materials scientists, and students studying heat transfer principles will benefit from this discussion.
Yes, but you haven't told us whether they are in series or on parallel.AbreuEE said:When you have the both sides of a non-homogeneous bar with thermal conductivities k1 and k2 in contact to 2 different temperatures, can you consider it the same as if there was some flux going through a homogeneous bar with the weighted mean of k1 and k2 as the conductivity?