...
首页> 外文期刊>Computer Methods in Applied Mechanics and Engineering >A posteriori finite element bounds for output functionals of discontinuous Galerkin discretizations of parabolic problems
【24h】

A posteriori finite element bounds for output functionals of discontinuous Galerkin discretizations of parabolic problems

机译:抛物线问题的不连续Galerkin离散化输出函数的后验有限元界

获取原文
获取原文并翻译 | 示例
           

摘要

ew present a Neumann-subproblem a posteriori finite element procedure for the efficient calculation of constant-free, sharp lower and upper estimators for linear functional outputs of parabolic equations discretized by a discontinuous Galerkin method in time. In space, a global coarse mesh and a decoupled fine mesh are used to compute the estimators which are shown to converge to the value of the output obtained for a global coupled fine mesh. We first formulate the bound procedure, with particular emphasis on the proof of the bounding properties. We then provide an illustrative numerical example: a problem of heat conduction in a composite material.
机译:ew提出了一种Neumann子问题后验有限元程序,用于有效计算通过不连续Galerkin方法离散化的抛物方程的线性函数输出的无常数,尖锐的上下估计。在空间中,使用全局粗网格和解耦的精细网格来计算估计值,这些估计值收敛到针对全局耦合的精细网格获得的输出值。我们首先制定绑定过程,特别强调绑定属性的证明。然后,我们提供一个说明性的数值示例:复合材料中的导热问题。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号