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L1 Method on Nonuniform Meshes for Linear Time-Fractional Diffusion Equations with Constant Delay

發(fā)布者:文明辦發(fā)布時(shí)間:2023-05-25瀏覽次數(shù):781

主講人:肖愛(ài)國(guó) 湘潭大學(xué)教授


時(shí)間:2023年5月27日15:00


地點(diǎn):三號(hào)樓301室


舉辦單位:數(shù)理學(xué)院


主講人介紹:肖愛(ài)國(guó),1999年在北京應(yīng)用物理與計(jì)算數(shù)學(xué)研究所獲理學(xué)博士學(xué)位,2001年從中國(guó)科學(xué)院計(jì)算數(shù)學(xué)與科學(xué)工程計(jì)算研究所博士后出站。現(xiàn)任湘潭大學(xué)數(shù)學(xué)與計(jì)算科學(xué)學(xué)院教授、湘潭大學(xué)韶峰學(xué)者特聘崗位學(xué)科帶頭人、湖南省級(jí)重點(diǎn)實(shí)驗(yàn)室主任、《數(shù)值計(jì)算與計(jì)算機(jī)應(yīng)用》編委、中國(guó)仿真學(xué)會(huì)仿真算法專(zhuān)業(yè)委員會(huì)主任委員、中國(guó)數(shù)學(xué)會(huì)計(jì)算數(shù)學(xué)分會(huì)常務(wù)理事。長(zhǎng)期從事微分方程數(shù)值方法研究,主持國(guó)家863課題和國(guó)家自然科學(xué)基金面上項(xiàng)目6項(xiàng)等,發(fā)表SCI論文80多篇,獲教育部和湖南省自然科學(xué)二等獎(jiǎng)、國(guó)家教學(xué)成果二等獎(jiǎng)、湖南省教學(xué)成果一等獎(jiǎng)、寶鋼教育獎(jiǎng)優(yōu)秀教師獎(jiǎng)、湖南省優(yōu)秀研究生導(dǎo)師等。


內(nèi)容介紹:This talk considers the numerical solution of the linear time-fractional diffusion equations with constant time delay. First we investigate the existence, uniqueness and regularity of the exact solution of such equations. Focusing on the time derivative discontinuities behavior of the solutions of the equations at multiple points generated by the time delay and the Caputo fractional derivative, we propose a numerical method based on the L1 method on time nonuniform meshes and the standard finite element method in space. Moreover, the results of stability and error estimate for the method are obtained under the regularity condition.