MixtureFractionEPSolnLect15ME525SP2011

# MixtureFractionEPSolnLect15ME525SP2011 - ME 525 Example...

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ME 525 Example Problem: Mixture Fraction Relations for a Nonpremixed n-Hexane/air Flame A nonpremixed n-hexane (C 6 H 14 ) jet flame is stabilized with an annular co-flow of dry air. Laser diagnostics are used to make point measurements of temperature and the mole fractions of the following species: C 6 H 14 , CO 2 , CO, H 2 O, H 2 , OH, O, H, O 2 , N 2 , and CH 3 . Calculate the value of the stoichiometric mixture fraction and develop an expression for the value of the mixture fraction at a particular measurement point as a function of the measured mole fractions. 61 4 2 2 2 2 2 -/ : 9.5 35.72 6 7 35.72 ( , ) CH For stoichiometric n hexane air combustion O N CO HO N mass originating from fuel stream f mass of mixture Y Y for HC fuels no air or diluent in fuel stream fi st h es am eo     1.008 12.011 16.00 14.007 : 6 6 14 19 71.44 6 12.011 6 12.011 14 1.008 19 16.00 HC ON C C CHO N C n the product and reactant sides for the mixture gg MW MW gmol gmol MW MW gmol gmol Consider reactant side MW Y MW MW MW MW Y   71.44 14.007

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MixtureFractionEPSolnLect15ME525SP2011 - ME 525 Example...

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