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August 23, 2005, 04:42
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Mixture Fraction
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i have generally seen the mixture fraction defined as:
mf = (Zf - Zf,2) / (Zf,1 - Zf,2) where these are element mass fractions so i can work out a mixture fraction for say carbon or oxygen or nitrogen etc. however i have also seen: mf = (Zf - Yf,2) / (Yf,1 - Yf,2) where the Y's are species mass fraction. Can someone please explain this second form to me. How can i be combining the element and species mass fractions and surely the two are not equal? |
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