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arXiv 2106.01693math.NAcs.NA
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多尺度混合-混合高阶方法与多尺度混合高阶方法的衔接

Bridging the Multiscale Hybrid-Mixed and Multiscale Hybrid High-Order methods

T. Chaumont-Frelet, A. Ern, S. Lemaire, F. Valentin

摘要:

对一类带分段多项式源项的变量扩散问题,建立了多尺度混合-混合(MHM)方法与多尺度混合高阶(MsHHO)方法的等价性.在理想化的假设下,定义的多尺度基函数的局部问题得到精确解决,我们证明了等价持有一般多面体(粗)网格和任意逼近阶。我们还利用属性的交换来执行统一的收敛性分析,并改进这两种方法。

英文摘要:

We establish the equivalence between the Multiscale Hybrid-Mixed (MHM) and the Multiscale Hybrid High-Order (MsHHO) methods for a variable diffusion problem with piecewise polynomial source term. Under the idealized assumption that the local problems defining the multiscale basis functions are exactly solved, we prove that the equivalence holds for general polytopal (coarse) meshes and arbitrary approximation orders. We also leverage the interchange of properties to perform a unified convergence analysis, as well as to improve on both methods.

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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