首页> 外文期刊>Numerical Heat Transfer, Part B. Fundamentals: An International Journal of Computation and Methodology >A-POSTERIORI ERROR ESTIMATOR FOR THE CONTROL-VOLUME FINITE-ELEMENT METHOD AS APPLIED TO CONVECTION-DIFFUSION PROBLEMS
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A-POSTERIORI ERROR ESTIMATOR FOR THE CONTROL-VOLUME FINITE-ELEMENT METHOD AS APPLIED TO CONVECTION-DIFFUSION PROBLEMS

机译:对流扩散问题的控制量有限元方法的A-Posteriori误差估计

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摘要

A-posteriori error estimators, as the name states, are mathematical tools for estimating the error of numerical solutions, given the mesh and the solution itself. The estimators can detect zones of the mesh where the error is expected to be high, and drive a remeshing process with the aim of finally smoothing the error field. In this work an a-posteriori error estimator for the control-volume finite-element method (CVFEM) is presented. The CVFEM is a nonconforming method for solving convection diffusion problems. The proposed estimator is shown mathematically to be a global upper bound of the true error, under some hypotheses. It has been also used successfully inside an automatic adaptive loop for two demanding benchmark cases. [References: 11]
机译:顾名思义,后验误差估计器是一种数学工具,用于在给出网格和解本身的情况下估计数值解的误差。估计器可以检测到网格中预期误差较高的区域,并驱动重新网格化过程,以最终使误差场变平滑。在这项工作中,提出了一种用于控制量有限元方法(CVFEM)的后验误差估计器。 CVFEM是解决对流扩散问题的不合格方法。在某些假设下,建议的估计器在数学上显示为真实误差的全局上限。它还已成功地在自动自适应循环内用于两种苛刻的基准测试情况。 [参考:11]

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