摘要
本文系统分析了用于流密度方程有限差分离散的SG和OAD方法,完善了适合于二维非均匀网格系统的流线SG方法.在此基础上,提出了适合流体动力学模型中流密度方程离散的二维OAD方法.简单的数值实验表明,OAD 离散方法不仅能够解决数值计算中存在的侧风扩散效应。
This paper discusses the SG and OAD methods for the discretization of flux density equations, and improve the two dimensional streamline SG method with non uniform grids, and finally extend it to the OAD method for the discretization of the hydrodynamic model. Simple numerical tests demonstrates that OAD method can minimize the upwind diffusion effect and fasten the convergence rate in numerical calculation.
出处
《东南大学学报(自然科学版)》
EI
CAS
CSCD
1999年第6期26-31,共6页
Journal of Southeast University:Natural Science Edition
基金
国家自然科学基金
江苏省自然科学基金