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How to smooth sharp gradient across element
Posted 11 giu 2015, 00:40 GMT-4 Version 5.0 0 Replies
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I am running a transient heat conduction simulation where the heat source is a function of a variable W, where W is solved using the Domain ODE. The condition for the heat source is such that"
Q > 0 if W<=1
Q<0 if W > 1
I tried implementing it by keying in:
Q*(W<=1)
into my heat source term but I couldn't get convergence. I believe this may be due to the sharp change in Q over the element so I tried smoothing it using a piecewise function but that doesn't help either.
Is there any way to overcome this? In FeNics, an open source software, it is possible to project onto the elements such that a C0 continuity is prescribed to allow for the jump in Q. Is such a thing possible with COMSOL?
Best wishes,
Ean Hin
Hello EH Ooi
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