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The variational multiscale method—a paradigm for computational mechanics

机译:变分多尺度方法-计算力学的范例

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摘要

We present a general treatment of the variational multiscale method in the context of an abstract Dirichlet problem. We show how the exact theory represents a paradigm for subgrid-scale models and a posteriori error estimation. We examine hierarchical p-methods and bubbles in order to understand and, ultimately, approximate the 'fine-scale Green's function' which appears in the theory. We review relationships between residual-free bubbles, element Green's functions and stabilized methods. These suggest the applicability of the methodology to physically interesting problems in fluid mechanics, acoustics and electromagnetics.
机译:我们在抽象Dirichlet问题的背景下提出了变分多尺度方法的一般处理。我们展示了精确理论如何代表亚网格规模模型和后验误差估计的范例。我们研究分层的p方法和气泡,以了解并最终近似出现在理论中的“精细尺度格林函数”。我们回顾了无残留气泡,元素格林函数和稳定方法之间的关系。这些表明该方法适用于流体力学,声学和电磁学中的物理有趣问题。

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