节点文献
基于NVD的高精度非振荡离散格式的构建
Development and Assessment of High-accuracy Non-oscillatory Discrete Scheme Based on NVD
【摘要】 出于流体数值模拟中对高精度离散格式的需求,提出了一种基于NVD性质的混合型格式。算例表明,与其他高精度格式相比,该格式使用简单、精度高、稳定、实用、有效。
【Abstract】 A new scheme for convection term discretization is developed based on the behavior of well-known NVD scheme.The new scheme is a combination of several simple common used schemes.It can not only preserve high-accuracy in smooth region of fluid,but also keep non-oscillatory in confusion region.By comparison with some other high-accuracy schemes,it is clearly indicated that the proposed scheme has two characteristics: simple and higher accuracy.
【关键词】 NVD性质;
TVD性质;
高精度;
非振荡;
【Key words】 NVD property; TVD property; high-accuracy; non-oscillatory;
【Key words】 NVD property; TVD property; high-accuracy; non-oscillatory;
【基金】 国家自然科学基金资助项目(50679025)
- 【文献出处】 水电能源科学 ,Water Resources and Power , 编辑部邮箱 ,2008年03期
- 【分类号】O158;O242.1
- 【下载频次】114