Turbulence and Shear Flow Phenomena -1 First International Symposium

ISBN Print: 1-56700-135-1

SCALAR TRANSPORT MODELLING OF TURBULENT JET DIFFUSION FLAMES

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Wai-Tung Chan Thermodynamics and Fluid Mechanics Division Mechanical Engineering Department UMIST, PO BOX 88, Manchester, M60 1QD, U.K.

Yang Zhang School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, Manchester M60 1QD, UK

Abstract

This paper focuses on the scalar flux modelling in the predictions of turbulent jet diffusion flames. Recently, full non-linear second-moment closure modelling approach (model which include non-linear effects for pressure-strain and pressure-scalar correlations), that guarantee realizability constraint and a two-component limit, has been applied for diffusion flames. It has been demonstrated to be particularly beneficial for flame predictions especially on the prediction of scalar transport. Systematic tests are being carried out to assess its advantages and disadvantages over other simpler models. Two methane jet flames have been chosen for the current study.

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