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Traveling wave excitation sources for FEM analysis of scattering in acoustic waveguide

  • Xinyi Li
  • Jingfu Bao
  • Yulin Huang
  • Benfeng Zhang
  • Tatsuya Omori
  • Ken-ya Hashimoto
Technical Paper
  • 39 Downloads

Abstract

This paper proposes use of traveling wave type excitation sources for the scattering analysis of acoustic waveguides using the finite element method (FEM). This technique allows to generate only one particular mode selectively. Scattering behavior at arbitrary boundaries can be evaluated accurately and quickly in frequency domain. After describing and demonstrating its operation mechanism in detail, this technique is applied to two cases. First, wave scattering properties are discussed at the end of a two-dimensional closed waveguide. Then the technique is applied to a three-dimensional open waveguide including periodic gratings. The results reveal effectiveness of this technique.

Notes

Acknowledgements

X. Li acknowledges the support of the Japanese Government (MEXT) for the scholarship through the Super Global University Project.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengduChina
  2. 2.Graduate School of EngineeringChiba UniversityChibaJapan
  3. 3.Department of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghaiChina

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