CFD Online Discussion Forums

CFD Online Discussion Forums (
-   Main CFD Forum (
-   -   Getting error when using bicgstab (

gerardosrez July 23, 2012 11:14

Getting error when using bicgstab
Hi cfd colleagues,

I'm using bicgstab method with ILU preconditioning to solve my linear systems on my CVFEM code.

When I solved the lid driven cavity flow the code worked fine, but now that I'm solving an inflow outflow problem I'm getting this error:

??? Error using ==> ilu
There is a pivot equal to zero. Consider decreasing the drop tolerance or
consider using the 'udiag' option.

I dropped the tolerance like MATLAB suggested without success...

Any idea about this issue???

Thanks in advance.....

All times are GMT -4. The time now is 16:50.