Modelling of a Bluff-Body Nonpremixed Flame using a Coupled Radiation/Flamelet Combustion Model |
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Authors: | M Hossain JC Jones W Malalasekera |
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Institution: | (1) Department of Mechanical Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU, U.K |
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Abstract: | A coupled radiation/flamelet combustion modelling technique is applied to the simulation of a bluff-body flame. Radiation
heat transfer is incorporated into the laminar flamelet model for turbulent combustion through the enthalpy defect. A new
method is developed for generating flamelet library with enthalpy defect. The radiation within the flame is modelled using
a raytracing approach based on the discrete transfer method. The predicted results are compared with the reported experimental
data. Comparison shows that the effects of radiative heat transferr on the temperature and major species are small for the
flame considered. However, a significant improvement in the prediction of OH is achieved when radiation heat transfer is included.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | combustion flamelet radiation |
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