Ardjouma Ganon, Manin Mathurin Taha, N’guessan Koffi, A. Toure
{"title":"Numerical blow-up for nonlinear diffusion equation with neumann boundary conditions","authors":"Ardjouma Ganon, Manin Mathurin Taha, N’guessan Koffi, A. Toure","doi":"10.22436/jnsa.014.02.03","DOIUrl":null,"url":null,"abstract":"This work is concerned with the study of the numerical approximation for the nonlinear diffusion equation (u)t = uxx, 0 < x < 1, t > 0, under Neumann boundary conditions ux(0, t) = 0, ux(1, t) = uα(1, t), t > 0. First, we obtain a semidiscrete scheme by the finite differences method and prove the convergence of its solution to the continuous one. Then, we establish the numerical blow-up and the convergence of the numerical blow-up time to the theoretical one when the mesh size goes to zero. Finally, we illustrate our analysis with some numerical experiments.","PeriodicalId":22770,"journal":{"name":"The Journal of Nonlinear Sciences and Applications","volume":"35 1","pages":"80-88"},"PeriodicalIF":0.0000,"publicationDate":"2020-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Journal of Nonlinear Sciences and Applications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.22436/jnsa.014.02.03","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This work is concerned with the study of the numerical approximation for the nonlinear diffusion equation (u)t = uxx, 0 < x < 1, t > 0, under Neumann boundary conditions ux(0, t) = 0, ux(1, t) = uα(1, t), t > 0. First, we obtain a semidiscrete scheme by the finite differences method and prove the convergence of its solution to the continuous one. Then, we establish the numerical blow-up and the convergence of the numerical blow-up time to the theoretical one when the mesh size goes to zero. Finally, we illustrate our analysis with some numerical experiments.