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Forum: Main CFD Forum

April 15, 2012, 22:02

Replies: 8

Recirculation region in streamline plot?

Views: 5,111

Posted By mettler

an eddy is a vortex. It just dissipates. Think...

an eddy is a vortex. It just dissipates. Think of a tiny whirlpool. The next time you are by a small creek you can see them caused by the rocks or sticks..

Forum: Main CFD Forum

April 14, 2012, 16:56

Replies: 8

Recirculation region in streamline plot?

Views: 5,111

Posted By mettler

a recirculation zone will not move..it will...

a recirculation zone will not move..it will always be there. I think you just have an eddy. The eddy should travel with the flow and dissipate. But, if the zone doesn't move and continuously...

Forum: Main CFD Forum

April 13, 2012, 10:11

Replies: 8

Recirculation region in streamline plot?

Views: 5,111

Posted By mettler

a recirculation zone will be due to the physics...

a recirculation zone will be due to the physics of the flow. If you look at the step flow (flwo is from left to right), when the fluid goes over the step it will begin to curve up towards the top...

Forum: Main CFD Forum

April 12, 2012, 08:22

Replies: 8

Recirculation region in streamline plot?

Views: 5,111

Posted By mettler

your recirculation zone is going to be concentric...

your recirculation zone is going to be concentric circles.

this is flow over a backwards facing step:

http://i53.photobucket.com/albums/g76/andrewmettlerhayes/deadzone.jpg

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