Acoustic intensity measurement in a narrow duct by a two-sensor method

Tetsushi Biwa, Yusuke Tashiro, Hiroshi Nomura, Yuki Ueda, Taichi Yazaki

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The use of two pressure sensors [Fusco, J. Acoust. Soc. Am. 91, 2229 (1992)] makes it possible to determine the acoustic intensity of a gas column in a duct, but the application of this method was limited to wide ducts. In this letter, the formulation of the method is modified to include narrow ducts where the duct radius is as small as the viscous boundary layer thickness of the gas. The validity of this method is shown by comparison with the direct measurements of the pressure and velocity.

Original languageEnglish
Article number086110
JournalReview of Scientific Instruments
Volume78
Issue number8
DOIs
Publication statusPublished - 2007 Sep 7

ASJC Scopus subject areas

  • Instrumentation

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