A low-Reynolds-number one-equation model of turbulence

被引:5
作者
Elkhoury, M. [1 ]
机构
[1] Lebanese Amer Univ, Dept Mech Engn, Beirut 11022801, Lebanon
关键词
D O I
10.1017/S0001924000002037
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
This work proposes an improved form of Menter's single-equation eddy viscosity transport model. The new transport equation follows from the transformation of the k-epsilon closure that includes the Yap-correction term, which is known to improve the (k-epsilon) model's prediction in adverse pressure gradient flows. The damping functions of the (low-Reynolds-number) LRN model are constructed using the ingenious approach of Baldwin and Barth. Hence, the model provides the correct wall-limiting behaviour of turbulence. Furthermore, the destruction term is modified to better account for non-equilibrium anisotropy effects. An assessment of the present proposed model against experiments, as well as Menter and Spalart-Allmaras (SA) turbulence models is provided via several boundary layer computations. Good agreement with experimental data is indicated, which merits the model to be considered for further refinement.
引用
收藏
页码:101 / 108
页数:8
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