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March 31, 2010, 11:08 |
Velocity and Pressure boundary setup
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#1 |
New Member
trackeras
Join Date: Apr 2009
Posts: 4
Rep Power: 16 |
Hi, Foamers
I want to simulation turbulent flow combustion using reactingFoam It has 2 inlet & 1 outlet. Basically, It is partially-premixed combustion inlet 1 : CH4 + Air inlet 2 : Air I have some problems about P and U boundary condition setup. Known information (attached below) U of inlet 1 and 2 P of outlet Current my boundary setup boundaryField --------------------->> "U" { inle_1 { type fixedValue; value uniform (-20 0 0); inle_2 { type fixedValue; value uniform (-20 0 0); } wall_3 { type fixedValue; value uniform (0 0 0); } outl_4 { type zeroGradient; } } boundaryField --------------------->> "P" { inle_1 { type zeroGradient; } inle_2 { type zeroGradient; } wall_3 { type zeroGradient; } outl_4 { type fixedValue; value uniform 100000; } } When I run my case using this boundary set, I can see inflow at outlet. (The calculated pressure of my domain is lower than outlet boundary pressure. I don't know how It can happen.) Is there anybody who knows appropriate boundary conditions? |
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May 18, 2010, 09:19 |
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#2 |
New Member
mediode
Join Date: Mar 2009
Posts: 27
Rep Power: 17 |
Try
outl_4 { type fixedValue; value uniform 0; } |
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