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Mass fraction/Mole fraction

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Old   October 12, 2012, 11:12
Default Mass fraction/Mole fraction
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Vikram Reddy
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Hi, I have a geometry which has reaction in it. My problem is that I want the reaction term to be in terms of mole fraction and not mass fraction. How do I input the "source term" in terms of mole fraction??
Please help.

thanks in advance,
Vikram
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Old   October 13, 2012, 05:29
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Glenn Horrocks
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Use a CEL expression to do the conversion.
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Old   October 22, 2012, 02:23
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Hi Glenn,

I am also trying to figure out how to convert mass fraction to mole fraction.

Can you please show us the CEL expression to do the conversion? Thanks a lot.
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Old   October 22, 2012, 05:52
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The equation is here:
http://en.wikipedia.org/wiki/Mole_fraction

The variables and functions are listed in the CFX reference guide.
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