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An ESFEM for analyzing threedimensional acoustic problems

上传者: 2020-01-13 20:30:42上传 PDF文件 2.93MB 热度 20次
Itiswell-knownthatonekeyissueofsolvingtheHelmholtzequationusingfiniteelementmethod(FEM)istheaccuracydeteriorationinthesolutionwithincreasingwavenumberduetothe‘‘numericaldispersionerror”.Suchanumericaldispersionerrorisessentiallycausedbythe‘‘overly-stiff”na
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