Sound Detection in a Flow by Static Pressure Measurement

• TERASHIMA Osamu

  名古屋大学　工学研究科　機械理工学専攻

• WATANABE Toru

  株式会社日立製作所　日立研究所　機械研究センタ

• MORITA Kiyoshi

  株式会社日立製作所　日立研究所　機械研究センタ

• ABE Yukinobu

  株式会社日立製作所　日立研究所　機械研究センタ

• SAKAI Yasuhiko

  名古屋大学　工学研究科　機械理工学専攻

• NAGATA Kouji

  名古屋大学　工学研究科　機械理工学専攻

• ONISHI Kazuhiro

  名古屋大学　工学研究科　機械理工学専攻

Bibliographic Information

Other Title

• 変動圧力計測による流体中伝搬/発生音の評価
• ヘンドウ アツリョク ケイソク ニ ヨル リュウタイ チュウ デンパン/ハッセイオン ノ ヒョウカ

Abstract

A new method is proposed for investigating the propagation characteristics of a sound wave and a sound source in a flow. This is achieved by measuring the static pressure fluctuation in a flow using a lock-in-amplifier. The static pressure fluctuation in a flow is measured by using a very small static pressure probe consisting of a thin pressure tube with 8 static holes on its wall and a 0.1-in microphone set into the flare of the probe connected to the tube. The present method is found to accurately identify the propagation direction of the sound in a flow. It also detects two types of different sound sources that originate from the Karman vortex streets behind a cylinder and holes installed in it.

Journal

• Journal of the Japanese Society for Experimental Mechanics

  Journal of the Japanese Society for Experimental Mechanics 13 (1), 52-59, 2013

  The Japanese Society for Experimental Mechanics

Keywords

• Sound Measurement
• Pressure Measurement
• Pressure Probe
• Propagation Characteristic

Details

• CRID: 1390001205188072064
• NII Article ID: 10031163566
• NII Book ID: AA11822914
• DOI: 10.11395/jjsem.13.52
• ISSN: 18844219
• ISSN: 13464930
• NDL BIB ID: 024631796
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I024631796
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed