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Time-dependent transport parameter

Posted 31.07.2014, 09:02 GMT-4 Heat Transfer & Phase Change, Chemical Reaction Engineering 0 Replies

brc
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Dear all,

I am solving a PDE of the type dC/dt = -D (dc^2/dx^2) and everything works fine when D is constant.

However, if I replace D with an ad hoc time dependent expression, D(t), although the PDE is actually solved, I start having serious mass conservation problems.

Does anyone have experience with time-dependent diffusion constants or conductivity? Any advice?

Thanks in advance!

0 Replies Last Post 31.07.2014, 09:02 GMT-4
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