|June 16, 2009, 18:18||
Join Date: Mar 2009
Posts: 18Rep Power: 9
When do you know that a system of coupled equation will generate a stable solution??
I've noticed that the source term plays a huge part during the solution of the differential equation. If it is too large, then there is a good chance that the system will be difficult to solve (or the solution will diverge).
My problem is too define how large can it be??
For example, if i am calculating temperatures, the source term can be in the order of thousands, whereas with concentration, the source term is usually a fraction.
I know that if I split the source term into Sc and Sp (like Patankar suggests) that is a good way to improve the stability. But in some cases, this is not enough.
Could anyone share some of his/hers experiences with this issue?
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