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June 6, 2012, 17:25
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Open boundary condition
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#1 |
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Member
Soroush
Join Date: Mar 2010
Posts: 52
Rep Power: 16  |
Hello,
I want to simulate an oscillating flow in a duct. I set the inlet as velocity inlet with a oscillating (sinusoidal) velocity profile. In outlet I have tried both pressure inlet and pressure outlet but in both cases I encounter reverse flow warning in the outlet faces. -Is it normal? -Which one (pressure inlet or outlet) is more suitable for my case? -Is there any other type of boundary condition more suitable for the zone with bi-directional flow? Thanks... 
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June 8, 2012, 00:41
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#2 |
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Member
Soroush
Join Date: Mar 2010
Posts: 52
Rep Power: 16 |
still waiting for the answer, Thansk...
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June 8, 2012, 06:39
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#3 |
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Senior Member
Join Date: Mar 2009
Location: Indiana, US
Posts: 186
Rep Power: 17 |
There is nothing abnormal about reversed flow, if everything else is correct with your simulation
There is also nothing wrong with getting a reversed flow warning at your outlet, it depends what you need out of your simulation To get rid of the warning extend your domain further away from your domain outlet and set the outlet BC there. Regards Luke |
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