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Simple cavity, confusing result

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Old   November 8, 2012, 10:54
Default Simple cavity, confusing result
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David Gaden
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Location: Winnipeg, Canada
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Hey Foamers,

I have a simple 2D cavity with inlet / outlet flow. When I simulate in PISO, and PIMPLE, I get unusual pressure bands at the inlet. See attached images.

There is nothing unusual I can see in my boundary conditions!

p inlet is zero gradient
p outlet is fixed value, uniform 0

U inlet is fixed value, uniform, 0.05 directed inwards
U outlet is zero gradient.

Any assistance would be greatly appreciated.

-Dave
Attached Images
File Type: jpg velocityDrivenUInlet.jpg (64.2 KB, 9 views)
File Type: jpg velocityDrivenPFull.jpg (10.4 KB, 9 views)
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