摘要
用有限元方法对不可压缩流体沿二维后台阶流动的流函数－涡量式进行数值计算，讨论了进出流边界条件的改变对流动所产生的影响．证明不仅出流边界条件对后台阶流动进行正确模拟有影响．而且进流边界条件对后台阶流动进行正确模拟的影响更大。
in this paper the finite element method is employed to solve the streamfunction-vorticity formula for viscous incompressible fluid flowing past two-dimensional backward-facing step. The influence of inflow and outflow boundary conditions on the flow is discussed. and it is peoved that not only the outflow boundary condition but also the inflow boundary condition is the key to simulate the flow correctly.
出处
《燕山大学学报》
CAS
1999年第1期35-39,共5页
Journal of Yanshan University
基金
机械工业部教育司科技基金
关键词
边界条件
有限元
后台阶
流函数
涡量
流动
boundary conditions. finite element method. backward- facing step. streamfunction, vorticity.
