摘要
The spacetime conservation element-solution element(CE/SE)method is extended to two-dimensional incompressible viscous flow in a two-sided lid-driven square cavity.Based on the SIMPLE method concept,the preconditioned dual-time scheme is introduced for unsteady computations.The CE/SE-based code is validated by simulating one-sided lid-driven cavity flows.The two-sided lid-driven square cavity problem involves several interesting characteristics being successfully predicted,including development of a pair of off-corner vortices and a free shear layer in the case of parallel wall motion,as well as the appearance of corner vortices for lower Reynolds numbers in the case of anti-parallel motion of the walls.It is found that both the Reynolds number and the direction of the moving walls affect the fluid flow in the cavity.
作者
YANG Duo-Xing
ZHANG De-Liang
杨多兴;张德良(Institute of Crustal Dynamics,Chinese Earthquake Administration,Beijing 100085;LHD,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190)
基金
Supported by the Institute of Crustal Dynamics,CEA under Grant No ZDJ2010-26
Wenchuan Fault Scientific Drilling(WFSD-10).
作者简介
Corresponding author:张德良,Email:dlzhang@imech.ac.cn。
