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Numerical analysis of the low-frequency noise emitted from a cylindrical and plane boundary layer

Research Project

Project/Area Number 22760125
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Fluid engineering
Research InstitutionUniversity of Toyama

Principal Investigator

WATANABE Daisuke  富山大学, 大学院・理工学研究部(工学), 講師 (70363033)

Project Period (FY) 2010 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords低周波音 / 境界層 / 乱流 / CFD / DNS / 騒音 / 流体工学
Research Abstract

Spatial direct numerical simulations are used to study the development of turbulent structures and the resultant sound emission mechanism in a compressible boundary layer. Disturbances of compressible isotropic turbulence with the amplitude change for spanwise direction are superimposed on the laminar profile at the inlet boundary layer in the computational box. Simulation results show that the inlet disturbances affect the transition region and suppress the low-frequency velocity/pressure fluctuations in a subsonic cylindrical boundary layer.

Report

(3 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • Research Products

    (16 results)

All 2012 2011 2010

All Presentation (16 results)

  • [Presentation] 円筒乱流境界層から発生する低周波音2012

    • Author(s)
      渡辺大輔,前川博 & 高見創
    • Organizer
      第50回「乱流遷移の解明と制御」研究会
    • Place of Presentation
      電気通信大学
    • Year and Date
      2012-03-20
    • Related Report
      2011 Final Research Report
  • [Presentation] 円筒乱流境界層から発生する低周波音2012

    • Author(s)
      渡辺大輔
    • Organizer
      第50回「乱流遷移の解明と制御」研究会
    • Place of Presentation
      電気通信大学東4号館
    • Year and Date
      2012-03-20
    • Related Report
      2011 Annual Research Report
  • [Presentation] DNSによる丸みを有した角部を過ぎる流れの安定性解析2012

    • Author(s)
      舟津佳克,渡辺大輔 & 川口清司
    • Organizer
      日本機械学会北陸信越支部第49期総会・講演会
    • Place of Presentation
      金沢工業大学
    • Year and Date
      2012-03-10
    • Related Report
      2011 Final Research Report
  • [Presentation] DNSによる丸みを有した角部を過ぎる流れの安定性解析2012

    • Author(s)
      舟津佳克
    • Organizer
      日本機械学会北陸信越支部第49期総会・講演会
    • Place of Presentation
      金沢工業大学扇が丘キャンパス
    • Year and Date
      2012-03-10
    • Related Report
      2011 Annual Research Report
  • [Presentation] 円筒乱流境界層から発生する低周波音への流入撹乱の影響2011

    • Author(s)
      渡辺大輔,前川博 & 高見創
    • Organizer
      第25回数値流体力学シンポジウム
    • Place of Presentation
      大阪大学コンベンションセンター
    • Year and Date
      2011-12-20
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] 急速混合型管状火炎の構造(第3報)2011

    • Author(s)
      五木田直彦,下栗大右,渡辺大輔,石塚悟
    • Organizer
      第49回燃焼シンポジウム
    • Place of Presentation
      慶應義塾大学
    • Year and Date
      2011-12-06
    • Related Report
      2011 Final Research Report
  • [Presentation] 細管内でのボルテックスバースティングに及ぼす不活性ガスの影響2011

    • Author(s)
      下栗大右
    • Organizer
      第49回燃焼シンポジウム
    • Place of Presentation
      慶應義塾大学日吉キャンパス`
    • Year and Date
      2011-12-06
    • Related Report
      2011 Annual Research Report
  • [Presentation] Maekawa, Effects of Oblique Unstable Modes on the Development of a Turbulent Mixing Layer at High Convective Mach Numbers2011

    • Author(s)
      Daisuke Watanabe, Kensuke Akita, Hiroshi Maekawa
    • Organizer
      49th AIAA Aerospace Sciences Meeting
    • Place of Presentation
      Orlando, Florida
    • Year and Date
      2011-01-04
    • Related Report
      2011 Final Research Report
  • [Presentation] Effects of Oblique Unstable Modes on the Development of a Turbulent Mixing Layer at High Convective Mach Numbers2011

    • Author(s)
      Daisuke Watanabe
    • Organizer
      49th AIAA Aerospace Sciences Meeting
    • Place of Presentation
      Orlando, Florida
    • Year and Date
      2011-01-04
    • Related Report
      2010 Annual Research Report
  • [Presentation] 平板境界層の遷移構造に及ぼすスパン方向長さの影響2010

    • Author(s)
      渡辺大輔 & 前川博
    • Organizer
      第24回数値流体力学シンポジウム
    • Place of Presentation
      慶應義塾大学
    • Year and Date
      2010-12-22
    • Related Report
      2011 Final Research Report 2010 Annual Research Report
  • [Presentation] A Fundamental Investigation on the Effect of the Ejection Velocity Ratio on the Characteristics of the Rapidly Mixed Tubular Flame Combustion2010

    • Author(s)
      Daisuke Shimokuri, Daisuke Watanabe, Yoshiro Eto, Yanlei Wang, Baolu Shi & Satoru Ishizuka
    • Organizer
      8th The Asia Pacific Conference on Combustion 2010
    • Place of Presentation
      Hyderabad, India
    • Year and Date
      2010-12-11
    • Related Report
      2011 Final Research Report 2010 Annual Research Report
  • [Presentation] 圧縮性境界層の遷移構造から発生する音波のDNS2010

    • Author(s)
      渡辺大輔
    • Organizer
      第47回「乱流遷移の解明と制御」研究会
    • Place of Presentation
      電気通信大学
    • Year and Date
      2010-09-22
    • Related Report
      2011 Final Research Report 2010 Annual Research Report
  • [Presentation] 円筒境界層における低周波圧力変動に及ぼす流入攪乱の影響2010

    • Author(s)
      渡辺大輔 & 前川博
    • Organizer
      日本流体力学会年会2010
    • Place of Presentation
      北海道大学
    • Year and Date
      2010-09-11
    • Related Report
      2011 Final Research Report 2010 Annual Research Report
  • [Presentation] 圧縮性境界層の遷移構造から発生する音波の研究2010

    • Author(s)
      渡辺大輔 & 前川博
    • Organizer
      日本機械学会2010年度年次大会
    • Place of Presentation
      名古屋工業大学
    • Year and Date
      2010-09-08
    • Related Report
      2011 Final Research Report
  • [Presentation] 圧縮性境界層の遷移構造から発生する音波の研究2010

    • Author(s)
      渡辺大輔
    • Organizer
      日本機械学会 2010年度年次大会
    • Place of Presentation
      名古屋工業大学
    • Year and Date
      2010-09-08
    • Related Report
      2010 Annual Research Report
  • [Presentation] 超音速噴流の不安定波を利用した騒音抑制手法の試み2010

    • Author(s)
      渡辺大輔
    • Organizer
      第3回噴流,後流,および剥離流れの基礎と先端的応用に関する研究分科会
    • Place of Presentation
      金沢大学
    • Year and Date
      2010-07-30
    • Related Report
      2011 Final Research Report 2010 Annual Research Report

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Published: 2010-08-23   Modified: 2016-04-21  

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