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Proceedings of CHT-15. 6th International Symposium on ADVANCES IN COMPUTATIONAL HEAT TRANSFER
May, 25-29, 2015, Rutgers University, New Brunswick, NJ, USA

DOI: 10.1615/ICHMT.2015.IntSympAdvComputHeatTransf


ISBN Print: 978-1-56700-429-8

ISSN: 2578-5486

AN ALGEBRAIC MODEL CLOSURE OF THE COUNTER GRADIENT DIFFUSION FOR THE TURBULENT FLUXES IN THEIR COMBUSTION SIMULATION

pages 648-665
DOI: 10.1615/ICHMT.2015.IntSympAdvComputHeatTransf.550
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SINOPSIS

This paper will present an algebraic model closure of counter gradient diffusion for the turbulent fluxes. The combustion will occur in a variable equivalence ratio and as partially premixed combustion is highlighted as one of the most relevant and important modeling challenges in the field of turbulent premixed combustion, we will use the LW-P model of combustion for this situation. The resulting model is combined with the second order model of turbulence Rij - ε in order to well predict the main structure of the flame zone in the case of stagnating turbulent flames. A numerical simulation is carried out in order to validate the model. The computational results are validated against the experimental measurements done by Cheng and Shepherd [1991].
The comparison of the results with the measurements were showing remarkable consistency and indicates that the model is a valid approach for predicting partially turbulent premixed flames stabilized in a stagnation flow.

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