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Communication Dans Un Congrès Année : 2017

Numerical modeling of waveguides accounting for translational invariance and rotational symmetry

Résumé

The analysis of high-frequency wave propagation in arbitrarily shaped waveguides requires specific numerical methods. A widely spread technique is the so-called semi-analytical finite element (SAFE) formulation. This formulation enables to account for the translational invariance of waveguide problems and leads to a two-dimensional modal problem reduced on the cross-section. Despite this, solving the problem can still be computationally demanding. In order to further reduce the size of the modal problem, this paper presents a SAFE method for waveguides of rotationally symmetric cross-sections. Such structures are encountered in many applications. Typical examples are bars of circular cross-section, regular polygons, and multiwire cables. Numerical results show that the computational effort required for solving the SAFE modal problem is tremendously reduced by accounting for rotational symmetry.
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Dates et versions

hal-01589987 , version 1 (02-10-2017)

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Fabien Treyssede. Numerical modeling of waveguides accounting for translational invariance and rotational symmetry. EURODYN 2017, 10th International Conference on Structural Dynamics, Sep 2017, ROME, Italy. pp. 1562-1567, ⟨10.1016/j.proeng.2017.09.462⟩. ⟨hal-01589987⟩
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