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Forum: OpenFOAM

October 30, 2016, 03:39

Replies: 13

Pressure instability with rhoSimpleFoam

Views: 5,930

Posted By hakolekar

Hi Bo, What is the relaxation factor of rho....

Hi Bo,

What is the relaxation factor of rho.
Make it around 0.01.

I was also experiencing a similar problem.

I reduced the relaxation factor of rho from 0.05 to 0.01 - everything converged...

Forum: OpenFOAM

October 29, 2016, 23:34

Replies: 13

Pressure instability with rhoSimpleFoam

Views: 5,930

Posted By hakolekar

Hi Bo, Please ensure that all the variables...

Hi Bo,

Please ensure that all the variables including h and e have relaxation factors defined for them in the fvSolutions file.

Also check your BCs - make sure you are using stagation pressure...

Forum: OpenFOAM

October 29, 2016, 23:31

Replies: 13

Pressure instability with rhoSimpleFoam

Views: 5,930

Posted By hakolekar

Hi Huangfei, Make sure that all the equation...

Hi Huangfei,

Make sure that all the equation variables have a relaxation factor defined for them.'

This could be one of the issues.

Please check it out.

Regards,
Harshal

Forum: OpenFOAM

October 27, 2016, 02:23

Replies: 13

Pressure instability with rhoSimpleFoam

Views: 5,930

Posted By hakolekar

Hi Phil, Thanks for your tip. My...

Hi Phil,

Thanks for your tip.

My simulation with rhoSimpleFoam was also behaving strangely - oscillating.
However, on reducing the residual of rho from 0.05 to 0.01 - the solution is...

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