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二维Navier-Stokes方程同位有限体积法的稳定性改进
IMPROVEMENT OF THE STABILITY CONDITION OF A COLOCATED FINITE VOLUME SCHEME FOR TWO-DIMENSIONAL NAVIER-STOKES EQUATIONS
【摘要】 <正>1引言考虑不可压缩粘性流体的二维Navier-Stokes方程,它由速度压力公式和连续性方程的耦合组成,假设Ω是R~2的一个有界开区域,其边界为(?)Ω,对于给定的外力项f,我们
【Abstract】 For the numerical solution of the incompressible Navier-Stokes equations, authors such as S.Faure and R.Temam described a colocated finite volume scheme and studied its stability.Our goal in this paper is to prove new estimates on the discrete nonlinear term,to obtain two kinds of new a priori estimates on approximate solutions,and finally to present and prove an improved stability theorem. Theoretical and numerical results show that the new condition for stability given by us is weaker than that given by Faure et al.
【关键词】 Navier-Stokes equations;
colocated finite volume scheme;
stability;
【Key words】 Navier-Stokes equations; colocated finite volume scheme; stability;
【Key words】 Navier-Stokes equations; colocated finite volume scheme; stability;
【基金】 兰州大学理论物理与数学纯基础科学基金(Lzu07003);甘肃省科技计划(0804NKCA073)资助
- 【文献出处】 高等学校计算数学学报 ,Numerical Mathematics A Journal of Chinese Universities , 编辑部邮箱 ,2009年04期
- 【分类号】O241.82
- 【被引频次】1
- 【下载频次】165