Sound transmission characteristics of Tee-junctions and the associated length corrections

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10 Citations (Scopus)

Abstract

The sound transmission characteristics of a Tee-junction formed by a sidebranch and an infinitely long duct are investigated numerically using the finite element method. The associated corrections of the branch length and the upstream duct length are also discussed in detail. The types of branch resonance that result in strong or weak sound transmission across the junction are determined and their effects on the length corrections examined. Results suggest that the type of sidebranch, the branch width, the branch length, and the order and the form of the resonance affect more significantly the length corrections of the duct section. The excitation of nonplanar higher branch modes gives rise to rapid increase in the duct length corrections and also results in lower sound transmission.
Original languageEnglish
Pages (from-to)218-227
Number of pages10
JournalJournal of the Acoustical Society of America
Volume115
Issue number1
DOIs
Publication statusPublished - 1 Jan 2004

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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