Investigation of the LES WALE turbulence model within the lattice Boltzmann framework
Investigation of the LES WALE turbulence model within the lattice Boltzmann framework
复制标题
DOI：
10.1016/j.camwa.2009.08.060
复制
发表时间：
2010-04
期刊：
影响因子：
--
通讯作者：
M. Weickert;Gerd Teike;O. Schmidt;Martin Sommerfeld
中科院分区：
文献类型：
--
作者：
M. Weickert;Gerd Teike;O. Schmidt;Martin Sommerfeld
在工业应用中，能够实现从层流到充分发展的湍流的过渡的湍流模型是至关重要的。一种很有前途的方法是LES WALE模型，它可以在没有壁函数或全局阻尼函数的情况下使用。由于该模型的代数特性，该模型产生了一种高效、快速的方案。此外，它对从层流到湍流过渡的预测也显示出令人鼓舞的结果。在这项工作中，LES WALE模型在晶格玻尔兹曼框架内进行了研究。为了验证的目的，给出了各种测试用例。首先，研究了雷诺数为6876的通道流动。其次，确定了壁挂式立方体在不同雷诺数下的流动。相对于立方体高度的雷诺数为40,000时，流动形式从层流到过渡到完全湍流。
Turbulence models which can perform the transition from laminar flow to fully developed turbulent flow are of key importance in industrial applications. A promising approach is the LES WALE model, which can be used without wall functions or global damping functions. The model produces an efficient and fast scheme due to its algebraic character. Additionally, its prediction of the transition from laminar to turbulent regimes has shown promising results. In this work, the LES WALE model is investigated within the lattice Boltzmann framework. For validation purposes, various test cases are presented. First, a channel flow at a Reynolds number of 6876 is investigated. Secondly, the flow around a wall-mounted cube at various Reynolds numbers is determined. The flow regime varies from laminar, to transitional, to fully turbulent conditions at a Reynolds number of 40,000 with respect to the cube height.