[sinatahmooresi]

Hi FOAMers!
I'm facing with something weird during case running using k-epsilon

The problem:
When i pause the running in every arbitrary time (with saving of course) and i start to run the case from last saved time step, i get bounding error for k . This is not happen when the case is running non stopping. Only after make the case stop and start again! So how could it be explained?
Regards

[backscatter]

Originally Posted by sinatahmooresi

Hi FOAMers!
I'm facing with something weird during case running using k-epsilon

The problem:
When i pause the running in every arbitrary time (with saving of course) and i start to run the case from last saved time step, i get bounding error for k . This is not happen when the case is running non stopping. Only after make the case stop and start again! So how could it be explained?
Regards

Check your mesh. Usually non-orthogonality or the cells with very small determinant (too planar cells (drastic aspect ratio)) gives rise to these issues.

Try running:

checkMesh -allGeometry -allTopology

and see if your mesh is good enough.


If there is nothing wrong with the mesh, then you need to use bounded/limited div and grad schemes.


Thanks,

[sinatahmooresi]

Originally Posted by halo

Check your mesh. Usually non-orthogonality or the cells with very small determinant (too planar cells (drastic aspect ratio)) gives rise to these issues.

Try running:

checkMesh -allGeometry -allTopology

and see if your mesh is good enough.


If there is nothing wrong with the mesh, then you need to use bounded/limited div and grad schemes.


Thanks,

Hi!
Thank you very much, I Got the idea. your hints waas helpful.