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International Journal for Multiscale Computational Engineering
Impact-faktor: 1.016 5-jähriger Impact-Faktor: 1.194 SJR: 0.554 SNIP: 0.82 CiteScore™: 2

ISSN Druckformat: 1543-1649
ISSN Online: 1940-4352

International Journal for Multiscale Computational Engineering

DOI: 10.1615/IntJMultCompEng.v8.i2.60
pages 207-219

Analysis of Multi-Transmitting Formula for Absorbing Boundary Conditions

Xianming Wang
Zhou Peiyuan Center for Applied Mathematics, Tsinghua University, Beijing 100084, China
Shaoqiang Tang
Center for Applied Physics and Technology, and LTCS, College of Engineering, Peking University, Beijing 100871; Zhou Peiyuan Center for Applied Mathematics, Tsinghua University, Beijing 100084, China

ABSTRAKT

In this paper, we analyze the multi-transmitting formula (MTF) proposed by Liao andWong (1984). From the computed reflection coefficients for the fully discrete MTF boundary conditions, we suggest choices for the artificial wave propagation speed which are different from Liao’s original choice. Theoretical and numerical studies for various incidence angles demonstrate that the suggested choices effectively reduce spurious reflections.

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