Application of the time-Domain boundary element method to analysis of flow-Acoustic interaction in a hole-Tone feedback system with a tailpipe

Mikael A. Langthjem, Masami Nakano

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

This paper is concerned with a mathematical model of a simple axisymmetric silencer-like model, consisting of a hole-tone feedback system equipped with a tailpipe. The unstable shear layer is modeled via a discrete vortex method, based on axisymmetric vortex rings. The aeroacoustic model is based on the Powell- Howe theory of vortex sound. Boundary integrals are discretized via the boundary element method; but the tailpipe is represented by the exact (one-dimensional) solution.It is demonstrated though numerical examples that this numerical model can display lock-in of the self-sustained flow oscillations to the resonant acoustic oscillations.

Original languageEnglish
Pages (from-to)227-241
Number of pages15
JournalCMES - Computer Modeling in Engineering and Sciences
Volume96
Issue number4
Publication statusPublished - 2013 Dec 1

Keywords

  • Acoustic resonance
  • Boundary element method
  • Discrete vortex method
  • Feedback cycle
  • Flow-acoustic interaction
  • Hole tone
  • Self-Sustained flow oscillations

ASJC Scopus subject areas

  • Computer Science Applications
  • Software
  • Modelling and Simulation

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