Recent content by plata_o_plomo

Exactly, BvU! Here's a derivation of the heat diffusion equation:

Sorry, BvU. Didn't expect anyone to care about my solution. My solution for a) and c) below. The easy part: Temperature profile in A and B is linear, thus heat flux through A and B is the same. The harder part: Heat flux through C? According to the heat equation, for a steady state problem...

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Thanks, Chet! Does this mean that a) Heat flux in C can never be equal to heat flux in A or B. b) Heat flux in C is always greater than heat flux in B. Furthermore, shouldn't heat flux be the same in all three materials according to conservation of energy?

Fixed the notation, thanks! So, q'' = dq/dx? I thought it was dq/dt. Heat flux is in the direction of the arrows. Not sure about your other question.

1. State the problem A plane wall consisting of three different materials, each of constant thermal conductivity k. Assume steady-state temperature distribution. a) Comment on relative magnitudes of q(dot)''2 and q(dot)''3 and of q(dot)''3 and q(dot)''4. b) Comment on the relative...