Volume 11, Issue 4
High-order and High Accurate CFD Methods and Their Applications for Complex Grid Problems

Xiaogang Deng ,  Meiliang Mao ,  Guohua Tu ,  Hanxin Zhang and Yifeng Zhang

10.4208/cicp.100510.150511s

Commun. Comput. Phys., 11 (2012), pp. 1081-1102.

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  • Abstract

The purpose of this article is tosummarize our recentprogress in high-order and high accurate CFD methods for flow problems with complex grids as well as to discuss the engineering prospects in using these methods. Despite the rapid development of high-order algorithms in CFD, the applications of high-order and high accurate methods on complex configurations are still limited. One of the main reasons which hinder the widely applications of these methods is the complexity of grids. Many aspects which can be neglected for low-order schemes must be treated carefully for high-order ones when the configurations are complex. In order to implement highorder finite difference schemes on complex multi-block grids, the geometric conservation lawandblock-interface conditions arediscussed. A conservative metric method is applied to calculate the grid derivatives, and a characteristic-based interface condition is employed to fulfil high-order multi-block computing. The fifth-order WCNS-E-5 proposed by Deng [9,10] is applied to simulate flows with complex grids, including a double-delta wing, a transonic airplane configuration, and a hypersonic X-38 configuration. The results in this paper and the references show pleasant prospects in engineering-oriented applications of high-order schemes.

  • History

Published online: 2012-04

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