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计算激波的高精度数值方法
Numerical Schemes With High Order of Accuracy for the Computation of Shock Waves
【摘要】 在分析了数值解在激波附近产生非物理振荡的原因后 ,构造了一个三阶迎风紧致格式以及激波的捕捉技术 ,并且 ,提出一种称为准装配法的新的激波装配方法· 一维流动的数值试验表明 ,新方法是非常令人满意的·
【Abstract】 High order accurate scheme is highly desirable for flow computation with shocks. After analysis has been made for the reason of the generation of non_physical oscillations around the shock in numerical computations, a third order, upwind biased, shock capturing scheme was proposed. Also, a new shock fitting method, called pseudo shock fitting method, was suggested, which in principle can be with any order of accuracy. Test cases for one dimensional flows show that the new method is very satisfactory.
【关键词】 数值方法;
激波计算;
迎风紧致格式;
【Key words】 numerical method; computation of shock waves; upwind compact scheme;
【Key words】 numerical method; computation of shock waves; upwind compact scheme;
【基金】 国家攀登计划资助项目
- 【文献出处】 应用数学和力学 ,APPLIED MATHEMATICS AND MECHANICS , 编辑部邮箱 ,2000年05期
- 【分类号】O354.5
- 【被引频次】26
- 【下载频次】316