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Forum: Main CFD Forum

June 5, 2018, 03:15

Replies: 8

Oscillatory Behavior in Grid Convergence Studies

Views: 1,081

Posted By CellZone

Okay. But do you know where it comes from,...

Okay.

But do you know where it comes from, that the results vary (temperature goes up and down for finer grid).

Where do this phenomenon come from? What happens here numerically?

Thanks!

Forum: Main CFD Forum

June 4, 2018, 07:26

Replies: 8

Oscillatory Behavior in Grid Convergence Studies

Views: 1,081

Posted By CellZone

Yes, I am using k-omega sst. So you mean,...

Yes, I am using k-omega sst.

So you mean, instead of keeping the y+ at the walls constant, I should refine ALL cells, so not only the one in the core mesh?

So my idea was:
-- > keeping the...

Forum: Main CFD Forum

June 4, 2018, 06:49

Replies: 8

Oscillatory Behavior in Grid Convergence Studies

Views: 1,081

Posted By CellZone

Yes I do. Automated Mesh with StarCCM+

Yes I do. Automated Mesh with StarCCM+

Forum: Main CFD Forum

June 4, 2018, 03:28

Replies: 8

Oscillatory Behavior in Grid Convergence Studies

Views: 1,081

Posted By CellZone

Oscillatory Behavior in Grid Convergence Studies

Hello,

where does it come from, that I have an oscillatory behavior when I am doing a grid convergence study?

So when I pick for example the heat transfer coefficient, temperature and pressure...

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