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Old   July 23, 2012, 11:14
Default Getting error when using bicgstab
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G. S.
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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.....
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