Mechanisms for sound generation in inviscid two-dimensional vortex interactions

Shiu Keung Tang, N. W.M. Ko

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)


Theoretical and numerical results obtained in the present investigation illustrate that the motions of the vorticity centroids and the unsteady deformation of the vortex cores are the sources of sound in the inviscid two-dimensional vortex interactions at low Mach number. A theory for the sound generation, based on the low Mach number vortex sound theory, is developed and the relationship between the core deformation and sound radiation for slightly deformed vortices is explicitly found. The unsteady vortex core deformation is also found to be important in all the interaction cases discussed.
Original languageEnglish
Pages (from-to)823-846
Number of pages24
JournalJournal of Sound and Vibration
Issue number5
Publication statusPublished - 21 Jun 2001

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Mechanics of Materials
  • Mechanical Engineering


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