音響利用技術　　音響情報・音響エネルギー　　音響エネルギーの保存則に関する研究

• 西岡 明

書誌事項

タイトル別名

• On the Technology of Acoustic Utility. Acoustic Information and Energy. Study on Conservation Law of Acoustic Energy.

抄録

To explain the mechanism of sound generated by flow field, this paper proposes an equation of acoustic energy conservation which consists in general flow field. The equation of conservation expresses law of acoustic energy conversions. From this equation, it bacame clear that following things generate or dissipate sound. (1) propagation (2) work by viscosity (3) interaction between pressure and heat variation (4) work generated by heterogeneous of mean flow velocity (5) high degree action generated by turbulent perturbation (6) dissipation accompanied by thermal expansion (7) dissipation accompanied by pressure loss (8) interaction between pressure loss and propagation of sound (9) action by non linerity of low degree sound. This conversion law and incompressible numerical simulation will make clear mechanism of sound generation.

収録刊行物

• 日本機械学会論文集Ｃ編

  日本機械学会論文集Ｃ編 67 (657), 1230-1234, 2001

  一般社団法人 日本機械学会

キーワード

• Acoustic Energy
• Conservation Law
• Aerodynamic Acoustics
• Wave
• Self-Excited Vibration

詳細情報

• CRID: 1390001206328553600
• NII論文ID: 130004234067
• DOI: 10.1299/kikaic.67.1230
• ISSN: 18848354
• ISSN: 03875024
• Web Site: http://www.jstage.jst.go.jp/article/kikaic1979/67/657/67_657_1230/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可