@Article{EAJAM-10-620, author = {Li , MingZheng , ZhoushunPan , Kejia and Yue , Xiaoqiang}, title = {An Efficient Newton Multiscale Multigrid Method for 2D Semilinear Poisson Equations}, journal = {East Asian Journal on Applied Mathematics}, year = {2020}, volume = {10}, number = {3}, pages = {620--634}, abstract = {

An efficient Newton multiscale multigrid (Newton-MSMG) for solving large nonlinear systems arising in the fourth-order compact difference discretisation of 2D semilinear Poisson equations is presented. The Newton-MG method is employed to calculate approximation solutions on coarse and fine grids and then a completed Richardson extrapolation is used to construct a sixth-order extrapolated solution on the entire fine grid directly. The method is applied to two nonlinear Poisson-Boltzmann equations and numerical simulations show that the Newton-MSMG method is a cost-effective approach with the sixth-order accuracy.

}, issn = {2079-7370}, doi = {https://doi.org/10.4208/eajam.090120.260320}, url = {http://global-sci.org/intro/article_detail/eajam/16985.html} }