- #1
chrishans
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I'm used to problems which ask me to find the heat flux for when, for example I have a very long cylinder covered with an insulator, each with their respective conductivity coefficient. I'd use the formula [itex]\frac{\partial Q} {\partial t} =\int -k\vec{\nabla} T \vec {ds}[/itex]. But now I have a situation where the cylinder is covered with two insulators, one on the left half of it, and the other one on the right. So I don't know how to use the previous formula here, as k doesn't vary with ρ only, but also with φ. I found this very same problem on a web but, it didn't use that formula. Instead, an electric-like circuit was built, and so on (I'm NOT supposed to solve it this way) Any advice?
Thanks
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