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multi-component mixture of gases/ boundary condition
Posted 2010年6月29日 GMT-4 13:27 0 Replies
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I am trying to simulate the movement of a multi-component gas mixture in a landfill with a gas extraction well built in the middle. With the assumption that the mixture is flowing out from the landfill to the extraction well with a constant volumetric flow rate, I have set up the boundary conditions at the well screen as c_ch4*-0.25[m/s], c_co2*-0.25[m/s], c_o2*-0.25[m/s], and c_n2*-0.25[m/s]
c_ch4, c_co2, c_o2, c_n2 = concentration of each gas component in mol/m^3
-0.25[m/s] is the mixture's flow rate
This gives me the flux of each individual gas component in the unit of [mol/(m^2*s)].
However, I am not exactly sure how the software would read the boundary conditions I have there. The concentration of each individual gas component varies across the subdomain, so when I set the boundary condition " c_ch4*-0.25[m/s] " at the well screen, is the software taking the concentration of methane right at the well screen?
I have tried many times but failed to get any results.
I really appreciate any help that you might be able to give me.
Thanks,
Ken
Hello Ken Wang
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