摘要
本文提出了在ＡＬＥ标架下用时间分裂步法求解罐内含自由液面大幅晃动的非定常的三维粘性流体（Ｎ－Ｓ）问题的方法。它使得求解储液罐的液面大幅度晃动问题不限于线性势流理论的范围和回避了自由表面波高函数和速度的随体导数中非线性项对求解造成的困难；从而它可以有效地处理带自由边界的粘性不可压的三维流体的非线性流动问题。
In this paper, an algorithm is put forward for analyzing the Navier-Stokes problems of unsteady three-dimensional viscous fluid with free surfaces (moving boundary) sloshing in large amplitude under ALE frame by scheme of time-split-steps with pressure term, which makes the analysis of the above problems not be limited to the exlent of hear potental thoery and avoid the difficulties in analysis from the wave height function and the nonlinear terms caused by the velocity-migration in space derivative.
出处
《振动与冲击》
EI
CSCD
北大核心
1996年第3期48-54,共7页
Journal of Vibration and Shock
基金
全国博士后基金
国家自然科学基金
关键词
流体
非线性
时间分裂步
ALE
粘性流体
moving boundary, viscous fluid, sloshing, time-split-steps, ALE, nonlinear
