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December 1, 2012, 11:58 |
Boundary Contitions/Mass fraction
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#1 |
Member
Join Date: Dec 2012
Posts: 81
Rep Power: 13 |
Hey,
can someone help me please? I had to simulate a combustion in a simple tube (diameter 25mm and length 500mm). Propane Air is used for the combustion. I used a transient (0.2s time steps 0.002s) solution and a Eddy Disserpation Model and activated Eddy disserpation coefficient B=0.5 I think the problem is either in my boundary conditions or in the mass fraction. But maybe sth else is wrong cause i never get a combustion Boundary Conditions I tried were: -Inlet at one end of the tube and the rest as a wall (free slip wall) -Outlet at one end and the rest as a wall (the "in" wall is a hot free slip wall) -Everything a wall (the "in" wall is a hot free slip wall) My mass fractions are: C3H8: 0.06 H20: 0.01 CO2:0.01 O2:0.232 |
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