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April 2, 2009, 04:38 |
totalPressre in OpenFOAM
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#1 |
New Member
Oli
Join Date: Apr 2009
Posts: 27
Rep Power: 17 |
Hi there!
I want to compare a STAR-CD Simulation with OpenFOAM. It's a simple incompressible flow through a duct. In STAR you can define the inlet: total pressure p=75Pa. So i used the totalPressure boundary condition in OpenFOAM: for p: inlet { type totalPressure; U U; phi phi; rho none; psi none; gamma 1; p0 uniform 62.2406639; value uniform 0; } because it's an incompressible flow i used p/density for the value p0. 75Pa/1.205 kg/m³ = 62.2406639 m²/s² EnSight is used for the interpretation of the results. Instead of the 62.2406639 there is an another, smaller value present at the inlet. Questions: - Is a smaller value defined because of p=p0 - 0.5*U² - Is it possible in OpenFOAM to define a total Pressure boundary condition with an fixed Value (like in STAR-CD) ? greetings |
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