对于服从Oldroyd B型本构律的黏弹性流体流动建立了一种V循环多层网格方法,并分析了V循环多层网格方法解的存在性和它的误差估计。应力、速度和压力分别采用不连续分片k次多项式Pk、连续分片k+1次多项式Pk+1和连续分片k次多项式PK(k〉0)。
For the steady state and time-dependent viscoelastic fluid flow in three dimensional domains, we put forward a V-cycle multi-grid method. At the same time, we discuss existence and error estimates of the approximate solution. The approximate stress, velocity and pressure are respectively Pk discontinuous, pk+ 1 continuous, Pk continuous.