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A method to generate the source of buzz-saw noise generated by randomly staggered rotors

  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A method to generate buzz-saw noise source is proposed to reduce the computational cost in modeling fan blades with random stagger angles. Considering a full annulus fan rotor with an arbitrary stagger angle on each blade, the multiple pure tone noise source is found to be able to be reconstructed from merely three steady simulations. The theoretical basis is, under the assumption of small stagger angles, the linear relation between the shock strength and the stagger angle.

Original languageEnglish
Title of host publicationProceedings of the 26th International Congress on Sound and Vibration, ICSV 2019
PublisherCanadian Acoustical Association
ISBN (Electronic)9781999181000
StatePublished - 2019
Event26th International Congress on Sound and Vibration, ICSV 2019 - Montreal, Canada
Duration: 7 Jul 201911 Jul 2019

Publication series

NameProceedings of the 26th International Congress on Sound and Vibration, ICSV 2019

Conference

Conference26th International Congress on Sound and Vibration, ICSV 2019
Country/TerritoryCanada
CityMontreal
Period7/07/1911/07/19

Keywords

  • Buzz-saw noise
  • Instant source generation
  • Mode decomposition
  • Random stagger angles

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