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- W4312822100 abstract "The classic finite element method (FEM) is an effective numerical tool for the study of underwater acoustic propagation which is of great importance for the utilization of marine resources. However, the numerical solutions obtained by the FEM for the acoustic problems are unreliable at relatively high computational wavenumbers. In this work the overlapping finite element method (OFEM) is introduced to the time-harmonic acoustic propagation and an enriched scheme (EOFEM) augmented by the harmonic trigonometric functions is proposed to improve the performance of the original scheme. The performance of the proposed EOFEM is studied by a singular eigenmode of the Helmholtz problem in an L-shaped domain. The numerical experiment reveals that the EOFEM can achieve more accurate solutions at relatively high computational wavenumber than the original OFEM and the classic FEM, and is more reliable in handling the distorted mesh." @default.
- W4312822100 created "2023-01-05" @default.
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- W4312822100 date "2022-10-17" @default.
- W4312822100 modified "2023-09-27" @default.
- W4312822100 title "Quadrilateral overlapping finite elements for the time-harmonic acoustic propagation" @default.
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- W4312822100 doi "https://doi.org/10.1109/oceans47191.2022.9977289" @default.
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