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抛物方程初边值问题连续有限元的超收敛性
Superconvergence of Continuous Finite Element Method for Parabolic Problem with Initial-boundary Value
【摘要】 研究了一类一维抛物方程初边值问题的连续有限元方法.在空间上进行任意m次有限元半离散,在时间方向上进行二次连续有限元后,获得了一个稳定的全离散计算格式.利用单元分析法校正技术的新思想进行理论分析,连续有限元解在剖分网格节点上具有超收敛性.
【Abstract】 The paper studies a class of one space dimension parabolic problem with intial-boundary value.After m-order semidiscrete finite element being gained in space and two-order continuous finite element being gained in time,a stable fully discrete scheme is obtained.By theoretical analysis superconvergence of continuous finite element method on nodal points in mesh is proved.
【关键词】 抛物问题;
连续有限元;
超收敛;
【Key words】 parabolic problem; continuous finite element method; superconvergence;
【Key words】 parabolic problem; continuous finite element method; superconvergence;
【基金】 国家重点基础研究计划(G1999032804);国家自然科学基金项目(1999032804)资助
- 【文献出处】 数学的实践与认识 ,Mathematics in Practice and Theory , 编辑部邮箱 ,2007年11期
- 【分类号】O241.4
- 【被引频次】9
- 【下载频次】112