A fast sparse grid based space–time boundary element method for the nonstationary heat equation
A fast sparse grid based space–time boundary element method for the nonstationary heat equation
复制标题
基于快速稀疏网格的非平稳热方程时空边界元法
DOI:
10.1007/s00211-018-0963-5
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发表时间:
2018
影响因子:
2.1
通讯作者:
Tausch, Johannes
中科院分区:
文献类型:
--
作者:
Harbrecht, Helmut;Tausch, Johannes
This article presents a fast sparse grid based space–time boundary element method for the solution of the nonstationary heat equation. We make an indirect ansatz based on the thermal single layer potential which yields a first kind integral equation. This integral equation is discretized by Galerkin’s method with respect to the sparse tensor product of the spatial and temporal ansatz spaces. By employing the-matrix and Toeplitz structure of the resulting discretized operators, we arrive at an algorithm which computes the approximate solution in a complexity that essentially corresponds to that of the spatial discretization. Nevertheless, the convergence rate is nearly the same as in case of a traditional discretization in full tensor product spaces.
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DOI:
10.1016/j.jcp.2006.11.001
发表时间:
2007
期刊:
J. Comput. Phys.
影响因子:
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作者:
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DOI:
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2010
期刊:
SIAM J. Sci. Comput.
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DOI:
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发表时间:
2010
期刊:
Mathematical Modelling and Numerical Analysis
影响因子:
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作者:
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通讯作者:
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DOI:
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发表时间:
2012
期刊:
Math. Comput.
影响因子:
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DOI:
10.1002/zamm.201100192
发表时间:
2013
期刊:
ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik
影响因子:
--
作者:
Alexey Chernov;Christoph Schwab
通讯作者:
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