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Specify Outlet boundary condition for icoFoam p file |
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January 18, 2015, 03:01 |
Specify Outlet boundary condition for icoFoam p file
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#1 |
New Member
Tomladian Bucinara
Join Date: Jan 2015
Posts: 18
Rep Power: 11 |
Hi Everyone,
U-57: PressureInletOutletVelocity, which applies zeroGradient on all components, except where there is inflow, in which case a fixedValue condition is applied to the tangential component; U-137: PressureInletOutletVelocity Combination of pressureInletVelocity and inletOutlet PressurInletVelocity When p is known at inlet, U is evaluated from the flux, normal to the patch inletOutlet Switches U and p between fixedValue and zeroGraident depending on direction of U So, please explain what is the meaning of pressureInnletOutletVelocity? I would appreciated if you could explain or point me the right material. I know this is an entry-level question, but as a new user, I am really confused by it for a couple of days. GOD bless me, give me the answer! Tom Last edited by Tom123; January 18, 2015 at 14:41. |
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September 3, 2015, 13:14 |
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#2 |
Senior Member
Saideep
Join Date: Apr 2015
Location: INDIA
Posts: 203
Rep Power: 12 |
Hi Tom;
So, after some research i guess the definition in OF manual is not good enough. But what it says is that if you have a fixed value for your pressure at the boundary then based on the direction of flow the boundary for the velocity is automatically updated. If there is an outflow along a face then the velocity bc along the face becomes a zeroGradient whereas if you have an inflow from a face then the inflow is given a value based on the value of 'U' available from the internal cells. Saideep |
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