Local on-surface radiation condition for multiple scattering of waves from convex obstacles
Local on-surface radiation condition for multiple scattering of waves from convex obstacles
复制标题
凸障碍物多次散射波的局部表面辐射条件
DOI:
10.1016/j.cma.2021.113697
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发表时间:
2021
影响因子:
7.2
通讯作者:
Acosta, Sebastián
中科院分区:
文献类型:
--
作者:
Acosta, Sebastián
We propose a novel on-surface radiation condition to approximate the outgoing solution to the Helmholtz equation in the exterior of several impenetrable convex obstacles. Based on a local approximation of the Dirichlet-to-Neumann operator and a local formula for wave propagation, this new formulation simultaneously accounts for the outgoing behavior of the solution as well as the reflections arising from the multiple obstacles. The method involves tangential derivatives only, avoiding the use of integration over the surfaces of the obstacles. As a consequence, the method leads to sparse matrices and O (N) complexity. Numerical results are presented to illustrate the performance and limitations of the proposed formulation. Possible improvements and extensions are also discussed.
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DOI:
10.1016/s0378-4371(98)00224-6
发表时间:
2001-02
期刊:
--
影响因子:
--
作者:
通讯作者:
--
影响因子:
3.7
作者:
M. Darbas
通讯作者:
M. Darbas
DOI:
--
发表时间:
1973
期刊:
影响因子:
--
作者:
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通讯作者:
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DOI:
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发表时间:
1996
期刊:
影响因子:
--
作者:
M. Teymur
通讯作者:
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影响因子:
1
作者:
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通讯作者:
X. Antoine