详细信息
非结构网格的高精度有限体积离散格式 ( EI收录)
HIGH RESOLUTION FINITE VOLUME SCHEMES FOR DISCRETIZATION OF CONVECTION ON UNSTRUCTURED MESH
文献类型:期刊文献
中文题名:非结构网格的高精度有限体积离散格式
英文题名:HIGH RESOLUTION FINITE VOLUME SCHEMES FOR DISCRETIZATION OF CONVECTION ON UNSTRUCTURED MESH
作者:赖焕新[1];邢改兰[1];云楚烨[1]
机构:[1]华东理工大学机械与动力工程学院,上海200237
年份:2010
卷号:31
期号:9
起止页码:1496
中文期刊名:工程热物理学报
外文期刊名:Journal of Engineering Thermophysics
收录:CSTPCD;;EI(收录号:20103913261065);Scopus;北大核心:【北大核心2008】;CSCD:【CSCD2011_2012】;
基金:国家自然科学基金资助项目(No.50876031);上海市教委科研创新基金项目资助(No.10ZZ40)
语种:中文
中文关键词:有限体积法;非结构网格;高精度格式;NVSF;TVD;FL
外文关键词:finite volume method; unstructured grid; high resolution scheme; NVSF; TVD
摘要:本文针对单元中心非结构网格有限体积算法,通过构造上游虚节点和局部一维坐标,将结构化网格中常用的规正变量(NVSF)和总变差消失通量限制器(TVD FL)两种形式的传统高精度格式移植到非结构网格中。为了提高虚节点的插值精度,使用最小二乘法计算单元中心的变量梯度。经典算例考核并与商业软件FLUENT结果的比较表明,本文对非结构网格的高精度格式移植成功有效。
In this paper, widely used high resolution schemes for structured grids in either the NVSF (normalized variable and space formulation) or the TVD (total variation diminishing) FL (flux limiter) forms are implemented to the cell-centered unstructured meshes by constructing a local coordinate and introducing a virtual upstream node. In order to improve the accuracy of interpolation, a least mean square method is employed to calculate the gradient. The method developed in this paper is validated against the benchmark numerical solution of a lid-driven cavity flow; comparison with the results of a commercial package, the FLUENT, is also carried out.
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