主要期刊论文

作者: L.-X. Li, et al |

发表/完成日期: 2004-01-04 |

期刊名称: ICA 2004 |

期卷: |

相关文章: 14(ICA2004).pdf |

论文简介 |

The acoustic propagation from a mono-frequency
coherent line source above a homogeneous rigid plane can be solved through analytic approach. However, it seems difficult for conventional mapped infinite elements (e.g. Astley element) to obtain the satisfactory result for such a problem because the requirement that all the infinite elements must pass through the source cannot be satisfied. In this article, a generalized mapped infinite element recently proposed by current authors is applied to this problem. Due to the generalization of the decay size measured in infinite direction and the slight modification to the inappropriate terms in phase factor and weighting factor, the results of the numerical experiments of the previous propagation problem are shown and compared with conventional infinite elements under identical conditions (e.g. same mesh resolution and same element order), the new infinite element can obviously give better results even for a high wave number. The extension of present work implies that this infinite element is robust when it is used for solving problems with multi-sources and complex geometries in combination with finite element method in near field. |