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压差方程的广义黎曼问题格式

Generalized Riemann Problem Scheme for Pressure Gradient Equations
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摘要 引入黎曼不变量对中心疏散波重解,构造了压差方程的广义黎曼问题格式.数值结果验证了广义黎曼问题格式的高精度性质,发现Godunov类型格式对压差方程只包含强简单波的黎曼解有很高的精度,对包含弱简单波的黎曼解是不适用的. Riemann invariants were introduced as the main ingredient to solve the generalized Riemann problem.GRP scheme was derived for pressure gradient equations.Numerical results implied Godunov-type schemes were suitable for Riemann solutions consisting of only strong simple waves and insuitable for those containing weak simple waves.
出处 《郑州大学学报(理学版)》 CAS 北大核心 2012年第3期8-11,15,共5页 Journal of Zhengzhou University:Natural Science Edition
基金 河南省自然科学基金资助项目 编号102300410145 南阳师范学院项目 编号nytc2006k60
关键词 广义黎曼问题格式 黎曼不变量 特征坐标 generalized Riemann problem scheme Riemann invariants characteristic coordinates
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参考文献9

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