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Two-grid method for characteristic mixed finite-element solutions of nonlinear convection-diffusion equations
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作者 qinxinqiang MAYichen GONGChunqiongt 《Journal of Chongqing University》 CAS 2004年第1期92-96,共5页
A two-grid method for solving nonlinear convection-dominated diffusion equations is presented. The method use discretizations based on a characteristic mixed finite-element method and give the linearization for nonlin... A two-grid method for solving nonlinear convection-dominated diffusion equations is presented. The method use discretizations based on a characteristic mixed finite-element method and give the linearization for nonlinear systems by two steps. The error analysis shows that the two-grid scheme combined with the characteristic mixed finite-element method can decrease numerical oscillation caused by dominated convections and solve nonlinear advection-dominated diffusion problems efficiently. 展开更多
关键词 convection-diffusion equations characteristic mixed finite element two-grid method CONVERGENCE
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