简介:Atwo-gridmethodforthesteadypenalizedincompressibleNavier-Stokesequationsispresented.Convergenceresultsareproved.Ifh=O(H^3-s)andε=O(H^5-2s)(s=0(n=2);s=1/2(n=3)arechosen,theconvergenceorderofthistwo-gridmethodisthesameasthatoftheusualfiniteelementmethod.Numericalresultsshowthatthismethodisefficientandcansavealotofcomputationtime.