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Lifted flame simulation!!!

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Old   November 11, 2007, 12:07
Default Lifted flame simulation!!!
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Hi i am trying to simulate non premixed confined turbulent propane lifted flames. I am using species transport model and in that laminar finite rate model for turbulent chemistry interactions. But the flame is not getting lifted upon increasing the velocity beyond 25m/s and the simulation lift off height is not matching with experimental lift off height. For 25m/s fuel velocity and pressure inlet condition for air,single step chemistry,k-e turbulent model: Experimental height =96mm Simulation lift off height=50mm. why this much discrepancy between experimental and simulation results. I tried with eddy dissipation model;laminar finite rate/k-e model;eddy dissipation model;EDC model. out of which i can achieve lift off of flame only when i am using laminar finite rate model or EDC model but EDC is over predicting the results. can u suggest me what i need to do to achieve correct lift off height(i.e my suggesting any particular model or the changes i need to make)

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Old   August 26, 2009, 05:17
Smile hi
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siva kumar
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send ur experimental results and gepmetry,, i will say the correct solution,,,
moreover hav u considered any wall thickness???
my email id is
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