Computational study of effects of near-wall turbulent structure on aeroacoustic waves from a supersonic jet impinging on an inclined plate

Taku Nonomura, Kozo Fujii

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

In this study, flow and acoustic fields of a supersonic jet impinging on an inclined flat plate are investigated. Compressible Navier-Stokes equations are solved by a high-order shock capturing scheme with two different computational grids for investigating the effects of resolution for turbulent boundary layer. Total numbers of computational grids are 30 million and 700 million where a 700 million computational grid is designed for resolving turbulent boundary layer. From the near-wall flow fields, streak-like structures are observed in the case with a 700 million computational grid while such structures become unphysically big in the case with a 30 million computational grid. In spite of the difference in the resolution of turbulent boundary layer, essential flow and acoustic fields do not change for both cases. This indicates that flow and acoustic fields are insensitive to the resolution of turbulent boundary layer, and the mechanism of generation of aeroacoustic waves do not have strong relation with turbulent boundary layer.

Original languageEnglish
Title of host publication17th AIAA/CEAS Aeroacoustics Conference 2011 (32nd AIAA Aeroacoustics Conference)
Publication statusPublished - 2011 Dec 1
Externally publishedYes
Event17th AIAA/CEAS Aeroacoustics Conference 2011 (32nd AIAA Aeroacoustics Conference) - Portland, OR, United States
Duration: 2011 Jun 52011 Jun 8

Publication series

Name17th AIAA/CEAS Aeroacoustics Conference 2011 (32nd AIAA Aeroacoustics Conference)

Other

Other17th AIAA/CEAS Aeroacoustics Conference 2011 (32nd AIAA Aeroacoustics Conference)
Country/TerritoryUnited States
CityPortland, OR
Period11/6/511/6/8

ASJC Scopus subject areas

  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Acoustics and Ultrasonics

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