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首页> 外文期刊>Computer Methods in Applied Mechanics and Engineering >A three-dimensional self-adaptive hp finite element method for the characterization of waveguide discontinuities
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A three-dimensional self-adaptive hp finite element method for the characterization of waveguide discontinuities

机译：表征波导不连续性的三维自适应hp有限元方法

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摘要

We propose the use of a highly-accurate three-dimensional (3D) fully automatic hp-adaptive finite element method (FEM) for the characterization of rectangular waveguide discontinuities. These discontinuities are either the unavoidable result of mechanical/electrical transitions or deliberately introduced in order to perform certain electrical functions in modern communication systems. The proposed numerical method combines the geometrical flexibility of finite elements with an accuracy that is often superior to that provided by semi-analytical methods. It supports anisotropic refinements on irregular meshes with hanging nodes, and isoparametric elements. It makes use of hexahedral elements compatible with high-order H(curl) discretizations. The 3D hp-adaptive FEM is applied for the first time to solve a wide range of 3D waveguide discontinuity problems of microwave communication systems in which exponential convergence of the error is observed.
机译：我们建议使用高精度的三维（3D）全自动hp自适应有限元方法（FEM）来表征矩形波导不连续性。这些不连续性要么是机械/电气转换的不可避免结果，要么是故意引入的，以便在现代通信系统中执行某些电气功能。所提出的数值方法将有限元的几何灵活性与通常优于半分析方法提供的精度相结合。它支持对具有悬挂节点和等参元素的不规则网格进行各向异性细化。它使用与高阶H（curl）离散化兼容的六面体元素。首次应用3D hp自适应FEM解决了微波通信系统中广泛的3D波导不连续性问题，在该问题中观察到了误差的指数收敛。

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  • 作者

    Ignacio Gomez-Revuelto; Luis E. Garcia-Castillo; Sergio Llorente-Romano; David Pardo;

  • 作者单位

    Departamento de Ingenieria Audiovisual y Comunicaciones, Universidad Politecnica de Madrid, Madrid, Spain,The authors want to acknowledge the support of Ministerio de Education y Ciencia of Spain under project TEC2010-18175/TCM;

    Departamento de Teoria de la Senal y Comunicaciones, Universidad Carlos 111 de Madrid, Escuela Politicnica Superior (Edificio Torres Quevedo), Avda. de la Universidad, 30,28911 Leganes, Madrid, Spain,The authors want to acknowledge the support of Ministerio de Education y Ciencia of Spain under project TEC2010-18175/TCM;

    Departamento de Teoria de la Senal y Comunicaciones, Universidad Carlos 111 de Madrid, Escuela Politicnica Superior (Edificio Torres Quevedo), Avda. de la Universidad, 30,28911 Leganes, Madrid, Spain,The authors want to acknowledge the support of Ministerio de Education y Ciencia of Spain under project TEC2010-18175/TCM;

    Department of Applied Mathematics, Statistics, and Operational Research, University of the Basque Country (UPV/EHU) and Ikerbasque (Basque foundation for sciences), Bilbao, Spain,The author wants to acknowledge the support of Ministerio de Education y Ciencia of Spain under project MTM2010-1651, the Laboratory of Mathematics (UFI11/52) at UPV/EHU and the CYTED 2011 project with reference P711RT0278.1;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    finite element method; hp-adaptivity; energy-norm; rectangular waveguides; waveguide discontinuities; S-parameters;

    机译：有限元法hp适应性;能量规范矩形波导;波导不连续性S参数;

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