A general one-equation turbulence model for free shear and wall-bounded flows
A general one-equation turbulence model for free shear and wall-bounded flows
复制标题
自由剪切和壁面流动的通用一方程湍流模型
DOI：
10.1007/s10494-005-8625-y
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
W. Schröder
中科院分区：
文献类型：
--
作者：
E. Fares;W. Schröder
本文的目的是介绍一个完整的、通用的一方程模型，它能正确地预测边界层、尾流、射流和旋涡等一类基本湍流。我们的出发点是成熟且经过验证的Wilcox双方程k−ω湍流模型。新衍生的一个方程模型有几个优点，并产生更好的预测比Spalart-Allmaras模型的射流和涡流，同时保持相同的效率和质量的近壁湍流的结果，而不使用壁距离。推导和验证的新模型使用的Spalart-Allmaras和k-ω模型计算的结果，并讨论了几个自由剪切和壁有界流。
The purpose of thiswork is to introduce a complete and general one-equation model capable of correctly predicting a wide class of fundamental turbulent flows like boundary layer, wake, jet, and vortical flows. The starting point is the mature and validated two-equation k−ω turbulence model of Wilcox. The newly derived one-equation model has several advantages and yields better predictions than the Spalart-Allmaras model for jet and vortical flows while retaining the same efficiency and quality of the results for near-wall turbulent flows without using a wall distance. The derivation and validation of the new model using findings computed by the Spalart-Allmaras and the k−ω models are presented and discussed for several free shear and wall-bounded flows.