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surface species absorption

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Old   February 7, 2012, 12:00
Default surface species absorption
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Hello !

I want to model an oxygen gas jet impacting a wall where a big part of the oxygen is absorbed (I also have other gaseous species in the system).
The wall boundary condition is the limit of my system so the idea is to set a kind off 'negative mass flow inlet'
First I tried writing a UDF where I applied (with define_adjust) a sink term on the cells near the surface
I also tried setting a negative mass flow inlet while setting the 02 mass fraction to 1. This did not work either because other gases were also absorbed.

Did any of you model this kind of problem before ?
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