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-   -   SIBS step size underflow (http://www.cfd-online.com/Forums/openfoam-solving/97066-sibs-step-size-underflow.html)

Abhishekd18 February 8, 2012 07:15

SIBS step size underflow
 
Hello all,

I am running dieselEngineFoam with spray. I am getting following error some time after spray injection. I checked the chemistryProperties file and tried using different solvers for ODESolver. But it didn't help. Can anyone help me on this?

Thanks.

--> FOAM FATAL ERROR:
step size underflow

From function ODES::SIBS
in file ODESolvers/SIBS/SIBS.C at line 155.

FOAM exiting

Abhishekd18 February 15, 2012 04:42

Ok. I got the reason. The solution becomes unstable after layer addition. Very high velocity (7783 m/s). Can anyone suggest how to control the solution after layer addition?


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