科研之友
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摘要
Differential quadrature method (DQM) is able to obtain high;ly accurate numerical solutions of differential equations just using a few grid points. Bat using purely differential quadrature: method, goad numerical solutions of two-dimensional incompressible Navier-Stokes equations can be obtained only for lour Reynolds number flow and numerical solutions will not be convergent for high Reynolds number flow. For this reason, ill this paper a combinative predicting-correcting numerical scheme for solving hue-dimensional incompressible Navier-Stokes equations is presented by mixing upwind difference method into differential quadrature! one, Using this scheme and pseudo-time-dependent algorithm, numerical solutions of high Reynolds number flow are obtained with only a few grid points. For example?, 1:1 and 1:2 driven cavity flows are calculated and good numerical solutions ape obtained.
