Experimental verification of a two-sensor acoustic intensity measurement in lossy ducts

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

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)

Abstract

Two-sensor method proposed by Fusco ["Two-sensor power measurements in lossy ducts," J. Acoust. Soc. Am. 91, 2229-2235 (1992)] is a novel technique that determines acoustic intensity of a gas column in a wide duct from measurements of pressure based on the boundary layer approximation. For further development of this method, its validity is experimentally tested through comparison with the direct method measuring the pressure and the velocity simultaneously, and its formulation is modified to include the narrow duct range where the duct radius is smaller than the viscous boundary layer thickness of the gas. It is shown that the modified two-sensor method enables quick and accurate evaluation of the acoustic intensity seamlessly from narrow to wide duct ranges.

Original languageEnglish
Pages (from-to)1584-1590
Number of pages7
JournalJournal of the Acoustical Society of America
Volume124
Issue number3
DOIs
Publication statusPublished - 2008 Sep 30

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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