Vortex sound under the influence of a piecewise porous material on an infinite rigid plane

C. K. Lau, Shiu Keung Tang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)


The vortex dynamics and the sound generation by an inviscid vortex in the presence of a finite length porous material on an otherwise rigid plane are studied numerically in the present study in an attempt to understand the sound generation near the surface of a wall lining in a lined duct. The combined effects of the effective fluid density and flow resistance inside the porous material, and the length and thickness of the porous material on the sound generation process are examined in detail. Results obtained demonstrate the sound pressure is longitudinal dipole and show how seriously the above-mentioned parameters are affecting the vortex sound pressure under the influence of the porous material.
Original languageEnglish
Pages (from-to)2542-2550
Number of pages9
JournalJournal of the Acoustical Society of America
Issue number5
Publication statusPublished - 1 Dec 2007

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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