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2008 Fiscal Year Final Research Report

Basic research of the generation mechanism of aerodynamic Noise and its control

Research Project

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Project/Area Number 19360079
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Fluid engineering
Research InstitutionTohoku University

Principal Investigator

INOUE Osamu  Tohoku University, 流体科学研究所, 教授 (00107476)

Co-Investigator(Kenkyū-buntansha) FUKUNISHI Yu  東北大学, 大学院・工学研究科, 教授 (60189967)
HATAKEYAMA Nozomu  東北大学, 大学院・工学研究科, 准教授 (50312666)
Project Period (FY) 2007 – 2008
Keywords流体騒音 / エオルス音 / キャビティー騒音
Research Abstract

航空機のジェット騒音や自動車の排気音など交通輸送機関の高速化に伴って生ずる騒音の多くは流体力学的な原因に基づく音(流体音)である。本研究課題では、高次精度(空間8次精度、時間4次精度)の差分スキームを用いることにより、流体の運動を支配する方程式、即ち圧縮性ナビエ・ストークスの式を精度良く解くことにより、渦運動が中心的役割を果たしている流れ場に生ずる流体騒音の発生機構を明らかにし、その制御方法を提案することができた。

  • Research Products

    (11 results)

All 2008 2007

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (6 results)

  • [Journal Article] Active Control of Cavity Noise by Fluidic Oscillators2008

    • Author(s)
      M. Shigeta, T. Miura, S. Izawa and Y. Fukunishi
    • Journal Title

      Theoretical and Applied Mechanics Japan Vol.57

    • Peer Reviewed
  • [Journal Article] Vortex Shedding from a Circular Cylinder of Finite Length at Low Reynolds Numbers2008

    • Author(s)
      O. Inoue and A. Sakuragi
    • Journal Title

      Physics of Fluids Vol.19, No.3

      Pages: 033601(12)

    • Peer Reviewed
  • [Journal Article] Beat of Sound Generated by Flow past Two Side-by-side Square Cylinders of Different Sizes2008

    • Author(s)
      O. Inoue and Y. Suzuki
    • Journal Title

      Physics of Fluids Vol.20, No.7

      Pages: 076101(7)

    • Peer Reviewed
  • [Journal Article] Sound Generation by a Vortex Ring Collision with a Wall2008

    • Author(s)
      Y. Nakashima and O. Inoue
    • Journal Title

      Physics of Fluids Vol.20, No.12

      Pages: 126104(16)

    • Peer Reviewed
  • [Journal Article] Beat of Sound Generated by Flow past Three Side-by-side Square Cylinders2007

    • Author(s)
      O. Inoue and Y. Suzuki
    • Journal Title

      Physics of Fluids Vol.19, No.4

      Pages: 048102(4)

    • Peer Reviewed
  • [Presentation] Suppression of Cavity Noise by Controlling the Spanwise Phase of the Separating Flow. (Invited Paper)2008

    • Author(s)
      Y. Fukunishi, M. Shigeta and S. Izawa
    • Organizer
      2nd International Conference on Jets Wakes and Separated Flows
    • Place of Presentation
      Berlin, Germany
    • Year and Date
      20080916-19
  • [Presentation] Suppression of Cavity Noise by Fluidic Oscillators2008

    • Author(s)
      S. Izawa, T. Miura, M. Shigeta and Y. Fukunishi
    • Organizer
      2nd International Conference on Jets, Wakes and Separated Flows
    • Place of Presentation
      Berlin, Germany
    • Year and Date
      20080916-19
  • [Presentation] DNS of Acoustic Sound Generated by Collision of Vortex Rings2008

    • Author(s)
      Y. Nakashima and O. Inoue
    • Organizer
      5th European Congress on Computational Methods in Applied Science and Engineering(ECCOMAS2008)
    • Place of Presentation
      Venice, Italy
    • Year and Date
      20080630-0704
  • [Presentation] 3-D DNS of Vortex Sound by a Finite Difference Method with an L-grid System2007

    • Author(s)
      Y. Nakashima and O. Inoue
    • Organizer
      10th ISGG Conference on Numerical Grid Generation
    • Place of Presentation
      Crete, Greece
    • Year and Date
      20070916-20
  • [Presentation] DNS of Aeolian Tones by a Highly-Accurate Finite Difference Method2007

    • Author(s)
      Y. Suzuki and O. Inoue
    • Organizer
      10th ISGG Conference on Numerical Grid Generation
    • Place of Presentation
      Crete, Greece
    • Year and Date
      20070916-20
  • [Presentation] Three-Dimensional DNS of Sound Generated by Oblique Collision of Vortex Rings. AIAA Paper 2007-35022007

    • Author(s)
      Y. Nakashima and O. Inoue
    • Organizer
      13th AIAA/CEAS AeroAcoustics Conference
    • Place of Presentation
      Rome, Italy
    • Year and Date
      20070521-23

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Published: 2010-06-10   Modified: 2016-04-21  

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