Numerical simulation of the aeroacoustic noise in the separated laminar boundary layer

Hyo Won Choi, Young June Moon, Kyu Jung Lee

Research output: Contribution to journalArticle

Abstract

The unsteady flow characteristics and the related noise of separated incompressible laminar boundary layer flows (Re δ·=614, 868, and 1,063) are numerically investigated. The characteristic lines of the wall pressure are examined to identify the primary noise source, related with the unsteady motion of the vortex at the reattachment point of the separation bubble. The generation and propagation of the vortex-induced noise in the separated laminar boundary layer are computed by the method of Computational Aero-Acoustics (CAA), and the effects of Reynolds number, Mach number and adverse pressure gradient strength are examined.

Original languageEnglish
Pages (from-to)280-287
Number of pages8
JournalKSME International Journal
Volume17
Issue number2
Publication statusPublished - 2003 Feb 1

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Keywords

  • Aero-Acoustic Noise
  • Laminar
  • Separation Bubble
  • Unsteady
  • Vortex Shedding

ASJC Scopus subject areas

  • Mechanical Engineering

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