预处理方法研究粘性流体定常流动

Reseaches on Steady Flow of Viscous Fluid by Preconditioned Method

预处理方法研究粘性流体定常流动孙建安，张万顺，赵金保（物理系）第一作者简介：孙建安，男，３０岁。１９８４年毕业于兰州大学数学力学系，获学士学位，现为西北师范大学物理系讲师。主要研究方向：粘性流体流动数值模拟，非线性动力系统。在国际国内有关学术刊物上发...

For the numerical simulation of steady viscous flow, preconditioned equations in conservativeform were solved with explicit eentered diffrence scheme and diagnalized implicit approximate factoriza-tion splitting scheme,the convergence of the first scheme is better than that of Chorin′s artificial com-prereibility methed and the convergence of implicit preconditioned methed is best in three scheme. Forsteady turbulent flow,preconditioned equation of turbulent model was prescnted first and good numeri-cal results were got by explicit centered diffrence scheme turbulent model averafed along the depth ofwater be used for natual river flow, and changed it into two-dimensional model,which we preconditionand solve with explicit scheme and get good results. Go a step further, more effectual implicit methodsto solve preconditioned turbulent model are developing.