报告题目:Adaptive finite element method for parabolic equations with Dirac measure
报告摘要:
In this talk we introduce the adaptive finite element method for parabolic equations with Dirac measure. Specifically, we consider two kinds of problems with separate measure data in time and measure data in space. It is well known that the solutions of such kind of problems may exhibit lower regularity due to the existence of the Dirac measure, and thus fit to adaptive FEM for space discretization and variable time steps for time discretization. For both cases we use piecewise linear and continuous finite elements for the space discretization and backward Euler scheme, or equivalently piecewise constant discontinuous Galerkin method, for the time discretization, the a posteriori error estimates based on energy and L2 norms for the fully discrete problems are then derived to guide the adaptive procedure. Numerical results are provided to support our theoretical findings.
报告时间:2016年12月4日上午9:00
报告地点:教学二楼伟德国际1946源自英国大会议室2126
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发布时间:2016-12-02 点击量:137