[Getdp] Heat of fusion
david at felsenthal.org
Thu Feb 23 21:51:48 CET 2006
I am doing a non-linear thermal model. The heat of fusion is of course a
large non-linearity. When doing a dynamic model I can do a crude
approximation with a jump in the sensible heat over a small temperature
range. It's kind of ugly though. To get reasonable results I need to
have the rho*c vary by about 300:1 over a range of 1 degree for a
problem whose range is 20 degrees.
I can make it work but I have convergence problems due (I think) to the
large variations in the value of rhoc over temperature.
Is there a better way of dealing with this issue, or should I just
accept long computation times?
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