The Variable Order Fast Multipole Method for Boundary Integral Equations of the Second Kind
The Variable Order Fast Multipole Method for Boundary Integral Equations of the Second Kind
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DOI:
10.1007/s00607-004-0063-5
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发表时间:
2004-05
期刊:
影响因子:
3.7
通讯作者:
J. Tausch
中科院分区:
文献类型:
--
作者:
J. Tausch
We discuss the variable order Fast Multipole Method (FMM) applied to piecewise constant Galerkin discretizations of boundary integral equations. In this version of the FMM low-order expansions are employed in the finest level and orders are increased in the coarser levels. Two versions will be discussed, the first version computes exact moments, the second is based on approximated moments. When applied to integral equations of the second kind, both versions retain the asymptotic error of the direct method. The complexity estimate of the first version contains a logarithmic term while the second version isO(N) whereNis the number of panels.