NonreactingJetEPSolnLect21ME525SP2011

NonreactingJetEPSolnLect21ME525SP2011 - Calculate the flame...

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Example Problem: Flame Structure from Nonreacting Jet Solution A jet of 30 mole% hydrogen and 70 mole% argon issues into quiescent air. Assume that the mixture fraction field f(x,r) can be determined accurately from the isothermal, nonreacting laminar jet solution. Along the flame centerline, 3 R f(x,O) = - Re.- where Re. = P e ve R 8 ] x J Jt The jet exit temperature is 298 K, the jet tube radius is 5 mm, the jet velocity is uniform at the exit and equal to 5 mis, and the viscosity is equal to 2x 1 0. 5 kg/(m-s) for both the air and the jet fluid. (a) Calculate the laminar jet flame length Lf. (b) Develop an equation relating (j),f, and/stoich.
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Unformatted text preview: Calculate the flame equivalence ratio at x = ft:i':tT 2.. L-. . f F Ov CA S +0\ cit" 0 01 e1y, C (~ ) I' -Vj JIh " 'G f <A. t/ e " 'iJ -t Y c 3 1-/ ~ + I it v + I, S' 0 L + 5', rolf AJ?-tv) lAJ ' ~jVlWc Vl Dy') rev-.c + //\-5 So )V\ 6tpp/t.'-.t 1 ) X f1W ~ v" -1 .l.~ ... ;t1 W rn~)o~ x'f1W,+X ;11lV c lj -j j C fV1 VLJ ~ ; ;X; ,v1 WI-'YC / - Y ~ 0-" J 1 t {) v ~ 5 to 0 c; I/h e f 1'. I . vn,')o I---r.A ~e / l' G C ~ , _ _ ':; f '7 = 0, ~~ '5 1 3+-7 -+-It:;--r ~ lG, Y (Mklv'YI;~\+ = (S-i,3)(2<6,6)---(lfl7 )(L-~.'iLf) ==-2-<6t70 (. ':; '6:5 ) ( -z '? J? J_ _ ,S-~ I 2 <6~ ~ .S-~I -= ~ tZ e j ~t' (b )...
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NonreactingJetEPSolnLect21ME525SP2011 - Calculate the flame...

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