Abstract
Modeling of a highly non-adiabatic turbulent ethylene diffusion flame has been tested with two mixing models in a pdf code. As a result of the radiative heat loss from the soot the relationships between the flow properties such as mixture fraction and enthalpy are much different than the more common adiabatic conditions. A comparison of the predictions with measurements of soot volume fraction that were obtained in a combustion wind tunnel indicate that satisfactory agreement is achieved. The statistics showed that most of the soot was at a temperature of about 1400K. The correlation of mixture fraction and soot volume fraction was small, indicating that state relationships are not appropriate for this particular flame.
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