[Getdp] Heat of fusion
cag32 at case.edu
Sun Mar 5 01:44:57 CET 2006
David Felsenthal wrote:
> 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?
Do you simply use functional iteration (IterativeLoop), or do you use a
Newton-Raphson iteration (IterativeLoop + JacNL)?
> Thanks again,
> getdp mailing list
> getdp at geuz.org
Assistant Professor, Case Western Reserve University, Mathematics
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