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Performance of Turbulence Models of Second Order in Predicting Turbulent Mixing in Jet Exhaust behind Aircraft Engines
Author(s) -
Sadiki A.,
Maltsev A.,
Janicka J.
Publication year - 2001
Publication title -
zamm ‐ journal of applied mathematics and mechanics / zeitschrift für angewandte mathematik und mechanik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.449
H-Index - 51
eISSN - 1521-4001
pISSN - 0044-2267
DOI - 10.1002/zamm.20010811521
Subject(s) - turbulence , reynolds stress , jet (fluid) , mechanics , k epsilon turbulence model , scalar (mathematics) , turbulence modeling , mixing (physics) , wake , physics , convection–diffusion equation , field (mathematics) , meteorology , mathematics , geometry , quantum mechanics , pure mathematics
The modeling of near‐field jet from aircraft engines is considered as an important task for a subsequent study on chemistry and micro‐physics in far‐away spatial regions of the aircraft wake. The main goal of this study is to investigate the performance of transport equation turbulence and mixing models for the prediction of near‐field jet exhaust plumes. Turbulence is modelled with three different models (two different linear second order moment closures (Reynolds stress transport models) and k‐model). Scalar fluxes are modeled by corresponding transport equation models. Finite‐rate chemistry is considered. Results, obtained with and without chemical reactions, show that turbulence and mixing modeling effects on the chemistry and flow field are significant and should be taken into account in modeling of near‐field exhaust plumes.