Experimental Study of Flow Noise Measurements for the Internal Flow Fields

• YOKOI Yoshifumi

  防衛大学校　システムエ学群　機械工学科

Bibliographic Information

Other Title

• 内部流れの気流音計測に関する実験的研究
• ナイブ ナガレ ノ キリュウオン ケイソク ニ カンスル ジッケンテキ ケンキュウ

Abstract

In this study, in order to examine the noise measurement technique of the internal flow, the flow noise due to vortex shedding from a circular cylinder was measured by use of a suction type wind tunnel which was equipped with glass wool walls and a condenser microphone. As a result of experiments, it was found that the acoustical free space can be created when the glass wool was set in the test section of wind tunnel, and the measurement of the fluid sound of the internal flow became possible without disturbing a flow field by incorporating a condenser microphone into the glass wool wall. A sound frequency with one big sound pressure level was measured when measuring a fluid sound from a circular cylinder in the fluid flow and the other frequency ingredient was a level as much as the background noise.

Journal

• Turbomachinery

  Turbomachinery 36 (4), 235-243, 2008

  Turbomachinery Society of Japan

Keywords

• Noise
• Internal Flow
• Wind Tunnel
• Circular Cylinder

Details

• CRID: 1390001204545675904
• NII Article ID: 10021103692
• NII Book ID: AN00004836
• DOI: 10.11458/tsj.36.235
• ISSN: 18802338
• ISSN: 03858839
• NDL BIB ID: 9444778
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9444778
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
• Abstract License Flag: Disallowed