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February 20, 2012, 00:15 |
problem in convergence
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#1 |
Senior Member
Shashwat
Join Date: Nov 2011
Posts: 107
Rep Power: 14 |
Dear friend
I am doing blood flow through stenosed artery. I consider the arterial wall as porous domain wall has multiple layers which has different porosity and permeability I have written permeabity and porosity as a function of r it is steady state analysis. I am facing the convergence problem .I need your help Thank you Regards Shashwat |
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February 20, 2012, 00:52 |
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#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,700
Rep Power: 143 |
Use a much smaller timestep to start off, and possibly local time scale factor (set it to about 5). Run that for a while until it starts to converge, then switch back to physical time scale with a larger time step to convergence.
These are all standard tricks for getting convergence, read the documentaton on "Obtaining Convergence". |
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