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arXiv 2103.06556math.NAcs.NA
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Stokes问题混合高阶方法的后验误差分析

A posteriori error analysis of hybrid high-order method for the Stokes problem

Yongchao Zhang, Liquan Mei, Gang Wang

摘要:

我们提出了一个基于残差的后验误差估计的混合高阶(HHO)方法的斯托克斯模型问题。所提出的HHO方法和误差估计器在二维和三维都是有效的,并且在相当一般的网格上支持任意逼近阶。证明了误差估计量的上界和下界,其中的关键是在离散格式中采用了一种新的稳定器。利用给定的估计量,设计了求解模型问题的HHO自适应算法。最后,对模型问题在多种网格上进行了数值模拟,得到了预期的理论结果。

英文摘要:

We present a residual-based a posteriori error estimator for the hybrid high-order (HHO) method for the Stokes model problem. Both the proposed HHO method and error estimator are valid in two and three dimensions and support arbitrary approximation orders on fairly general meshes. The upper bound and lower bound of the error estimator are proved, in which proof, the key ingredient is a novel stabilizer employed in the discrete scheme. By using the given estimator, adaptive algorithm of HHO method is designed to solve model problem. Finally, the expected theoretical results are numerically demonstrated on a variety of meshes for model problem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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