高超声速湍流直接数值模拟技术

概述了近年来国内外高超声速湍流直接数值模拟(DNS)技术方面最新的研究进展,主要集中在高精度、高鲁棒性数值方法方面,同时也介绍了近年来典型的高超声速湍流DNS算例。在数值方法方面,主要介绍了高精度激波捕捉格式以及保持计算稳定的数值技术,重点是WENO格式及高阶保单调格式的最新进展。在高超声速湍流DNS算例方面,介绍了压缩性影响、壁温影响、真实气体效应以及高超声速转捩等方面的DNS研究。此外,还简要介绍了作者开发的可压缩高精度计算流体力学软件OpenCFD。

Direct numerical simulation techniques for hypersonic turbulent flows

The recent developments of high resolution schemes, especially, high-order and high-robustness shock-capture schemes, and direct numerical simulation (DNS) cases for hypersonic turbulent flows are reviewed in this paper. The numerical methods include the high-resolution shock-capture methods and the technique to stabilize computation for hypersonic flows, as well as, the developments of WENO and monotonicity preserving schemes. The DNS studies include the effects of compressibility, wall temperature and high-temperature real gas on the turbulent flows, and the studies of hypersonic transition flows are also reviewed briefly. Furthermore, an OpenCFD code developed by the author which is compressible and high-resolution, is addressed briefly