FDTD Simulations of Acoustic Waves in Two-DimensionalPhononic Crystals using Parallel Computer

• Kurose Tomoyuki

• Tsuruta Kenji

• Totsuji Chieko

• Totsuji Hiroo

抄録

The finite-difference time-domain (FDTD) method has been applied to the calculation of the phonon band structure of two-dimensional (2D) phononic crystals, consisting of metal cylinders placed periodically in liquid. By comparing several combinations of materials for metal cylinder and liquid, we analyze the dependence of the band structures on sound speed and density of liquid media. Moreover, the negative refraction of the acoustic waves is observed at the interfaces between phononic crystal slab and the liquid. We find that an acoustic“lens effect”with the slab appears due to the negative refractions. The relationship between the focal intensity in the lens effect and the band structure is discussed.

収録刊行物

• Memoirs of the Faculty of Engineering, Okayama University

  Memoirs of the Faculty of Engineering, Okayama University 43 16-21, 2009-01

  Faculty of Engineering, Okayama University

詳細情報

• CRID: 1390290699571935744
• NII論文ID: 120002308928
• NII書誌ID: AA12014085
• ISSN: 13496115
• DOI: 10.18926/17829
• Web Site: https://ousar.lib.okayama-u.ac.jp/17829
• 本文言語コード: en
• データソース種別:
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  • IRDB
  • CiNii Articles