CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   CFX (http://www.cfd-online.com/Forums/cfx/)
-   -   problem in convergence (http://www.cfd-online.com/Forums/cfx/97535-problem-convergence.html)

shaswat February 20, 2012 01:15

problem in convergence
 
1 Attachment(s)
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

ghorrocks February 20, 2012 01:52

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".


All times are GMT -4. The time now is 04:50.