A Reynolds-averaged Navier-Stokes solver using unstructured mesh-based finite-volume scheme
A Reynolds-averaged Navier-Stokes solver using unstructured mesh-based finite-volume scheme
复制标题
使用基于非结构化网格的有限体积方案的雷诺平均纳维-斯托克斯求解器
DOI：
10.2514/6.1998-231
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
D. Choudhury
中科院分区：
文献类型：
--
作者：
Sun;S. Mathur;J. Murthy;D. Choudhury
提出了一种用于非结构化网格的雷诺平均纳维斯托克斯 (RANS) 求解器，并针对多种湍流进行了验证。 RANS 求解器采用基于线性重建的以单元为中心的二阶精确有限体积离散化，结合基于压力的分离求解过程，k-e 模型用于具有壁函数的湍流闭合。验证中采用带有或不带有局部细化的四边形和三角形网格。事实证明，所提出的求解器可以以良好的精度预测所选流，并且预测的质量与基于结构化网格的求解器相当。研究还表明，局部网格自适应提供了解决流动关键区域的经济手段。
A Reynolds-Averaged Navier-Stokes (RANS) solver for unstructured meshes is presented and validated for a number of turbulent flows. The RANS solver employs a cellcentered, second-order accurate finite-volume discretization based on linear reconstruction, in conjunction with a pressure-based segregated solution procedure, k-e models are used for turbulence closure with wall functions. Quadrilateral and triangular meshes with or without local refinement are employed in the validations. It is demonstrated that the proposed solver can predict the selected flows with good accuracy, and that the quality of the predictions is comparable to that of structured mesh based solvers. It is also shown that local mesh adaptation provides an economical means of resolving the critical regions of the flow.