I just start working on PCM model and I found there a a few reliable PCM in literature (e.g. Hamid Ei Quarnia 2009). Can someone explain to me why the following boundary condition is the case:
dT/dx(at x= 0,r) = 0 AND dT/dx(at x= L, r) = 0; where 'x' is axial dimension and 'r' is radial dimension.
The paper that used the above conditions is attached here (see equation 4-c).
Thanks you for helping me !
James Leigh
It would seem that these boundary conditions just reflect the fact that the tubes are of length L and outside the range x = 0-L they are not surrounded by phase change material, hence no heat transfer in x axis.
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