G201 正方形管内乱流に照射された超音波の影響(2)(GS-2 音響,騒音,音波,一般セッション)

• 岩本 幸治

  愛媛大工

• 檜原 秀樹

  愛媛大工

• 十河 基介

  愛媛大工

書誌事項

タイトル別名

• G201 Effects of Ultrasound on Turbulent Square-Duct Flow(2)

抄録

Effects of ultrasonic vibrations on turbulent (Re=7000±50) square-duct flow were investigated experimentally by means of LDV. Ultrasound was introduced into the flow by Langevin PZT-type transducers attached to the trapezoidal horn. Three cases of horn arrangements were investigated: the horn is located at the sidewall near the bottom, at the corner between sidewall and bottom, and at the center of the sidewall. Driven frequency and power supplied to transducers were 45±2 kHz and mainly 20 W respectively. Results show that acoustic streaming varies the distribution of Reynolds shear stress, and its change is explained by conventional momentum transfer theory. The experiment varying ultrasonic power shows that the region of ultrasonic vibration can be adjusted in case that the horn is located at the sidewall near the bottom, since this case is less affected by inertia of main flow compared with other cases.

収録刊行物

• 流体工学部門講演会講演論文集

  流体工学部門講演会講演論文集 2006 (0), _G201-1_-_G201-4_, 2006

  一般社団法人 日本機械学会

キーワード

• Reynolds Stress
• Ultrasound
• Acoustic Streaming
• Secondary Flow

詳細情報

• CRID: 1390001205884078592
• NII論文ID: 110008617110
• DOI: 10.1299/jsmefed.2006._g201-1_
• ISSN: 24242896
• Web Site: https://www.jstage.jst.go.jp/article/jsmefed/2006/0/2006__G201-1_/_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