文献类型：期刊文献

英文题名：A pressure-correction procedure with high-order schemes implemented on unstructured meshes

作者：Lai, Huanxin[1];Xing, Gailan[1];Tu, Shantong[1];Zhao, Ling[1]

机构：[1]E China Univ Sci & Technol, Shanghai 200237, Peoples R China

年份：2011

卷号：21

期号：3-4

起止页码：331

外文期刊名：INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW

收录：;EI(收录号：20111913968577);WOS:【SCI-EXPANDED(收录号:WOS:000292344300006)】；

基金：The authors wish to acknowledge the support for this work by the NSFC under Grant No. 50876031 and by Shanghai Municipal Education Commission under Grant No. 10ZZ40.

语种：英文

外文关键词：Meshes; Flow; Flux; Numerical analysis

摘要：Purpose - The purpose of this paper is to present a pressure-correction procedure for incompressible flows using unstructured meshes. A method of implementing high-order spatial schemes on unstructured grids was introduced. Design/methodology/approach - The procedure used a collocated cell-centered unstructured grid arrangement. In order to improve the accuracy of calculation, the widely used high-order schemes for convection, developed for structured grids and in the form of either the normalized variable and space formulation (NVSF) or the total variation diminishing (TVD) flux limiters (FL), were introduced and implemented onto the unstructured grids. This implementation was carried out by constructing a local coordinate and introducing a virtual upstream node. Findings - The procedure was validated by calculating the lid-driven cavity flows which had benchmark numerical solutions. For comparison, these flows were also computed by a commercial package, the FLUENT. The results obtained by the present procedure agreed well with the benchmark solution although very coarse grids were used. For the FLUENT, however, worse agreements with the benchmark solutions were obtained although the grids used for computation were the same. These demonstrated the robustness of the presented numerical procedure. Originality/value - With the present method, high-order schemes in either NVSF or TVD FL forms for structured grids can be easily implemented onto unstructured grids. This provides more choices of high-order schemes for calculating complex flows.