a Pointwise Version of Baldwin-Barth Turbulence Model
a Pointwise Version of Baldwin-Barth Turbulence Model
复制标题
鲍德温-巴斯湍流模型的逐点版本
DOI：
10.1080/10618569308904478
复制
发表时间：
1993
影响因子：
1.3
通讯作者：
S. Ramakrishnan
中科院分区：
文献类型：
--
作者：
U. Goldberg;S. Ramakrishnan
基于大涡和Kolmogorov时间尺度的比值，用等效函数代替依赖于y+的近壁公式，对Baldwin-Barth <s:1> rtone方程湍流模型进行了修正。结果是一个在近壁区域有效的<s:1> rt模型，然而，不需要知道到墙壁的局部距离，使其非常适合在非结构化计算网格框架以及传统的结构化网格中使用。新模型的预测能力通过一系列流动案例得到了验证，包括有壁流动和自由剪切流动。
SUMMARY The Baldwin-Barth υRTone-equation turbulence model is modified by replacing the y+-dependent near-wall formulation with equivalent functions based on the ratio of the large eddy and the Kolmogorov time scales. The result is a υRT model valid in near-wall regions which, nevertheless, does not require knowledge of local distance to walls, rendering it ideal for use within unstructured computational grid frameworks as well as with traditional structured grids. The new model's predictive capability is shown through a number of flow cases, including both wall-bounded and free shear flows.