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September 18, 2001, 10:07 |
Species Concentration
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#1 |
Guest
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Hi,
Is it possible to obtain a concentration of species directly from a solver for a UDF purposes? Michal |
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September 18, 2001, 18:16 |
Re: Species Concentration
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#2 |
Guest
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Yes, you can use C_YI(c,t,i), where c is the cell, t is the thread, and i the species index.
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September 19, 2001, 02:48 |
Re: Species Concentration
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#3 |
Guest
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Thanks for Your response! One mor question: How to check which species index "i" describe particular species? Michal
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September 20, 2001, 15:40 |
Re: Species Concentration
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#4 |
Guest
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It usually corresponds to the species list in the material panel starting with 0.
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September 24, 2001, 03:48 |
Re: Species Concentration
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#5 |
Guest
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Note C_YI returns the species mass fraction not concentration. You will need to convert to get concentration.
Greg |
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September 25, 2001, 03:32 |
Re: Species Concentration
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#6 |
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Thanks for Your advices!
Another question: How to get a mixture density for UDF directly from a solver? Is it correctly to obtain this value simply by C_R(c,t)? |
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September 25, 2001, 04:45 |
Re: Species Concentration
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#7 |
Guest
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Yes
so a species concentration is CONC_i = C_YI(c,t,i)*C_R(c,t)/Mi where Mi = molecular weight g/mol = kg/kmol of species i Greg |
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September 25, 2001, 04:52 |
Re: Species Concentration
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#8 |
Guest
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Thanks for Your very helpful answer! Now it is clear...
Michal |
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