超音速ジェットの拡散に及ぼす撹乱速度成分の影響

機関リポジトリ オープンアクセス

書誌事項

タイトル別名
  • Effect of the disturbance velocity component on jet diffusion in a supersonic jet

抄録

第51回流体力学講演会/第37回航空宇宙数値シミュレーション技術シンポジウム (2019年7月1日-3日. 早稲田大学早稲田キャンパス国際会議場), 新宿区, 東京

51st Fluid Dynamics Conference / the 37th Aerospace Numerical Simulation Symposium (July 1-3, 2019. International Conference Center, Waseda University), Shinjuku-ku, Tokyo, Japan

The three-dimensional compressible Navier-Stokes equations are numerically solved to study effect of the velocity component of inflow disturbance on receptivity of helical mode in a supersonic round jet at high convective Mach numbers. Initial disturbances with only u(sub r), u(sub θ) and u(sub x) velocity components are compared. The numerical results show that the inflow disturbance of the only u(sub r) component is easily accepted into the jet as the helical mode than the case of the only u(sub θ) component and u(sub x) component without azimuthal wave number dependency. In addition, the magnitudes of the pressure fluctuations emitted from the jet are approximately equal when the diffusion start time of the jet is the same. There are less dependence of initial condition's velocity component in the jet sound field.

形態: カラー図版あり

Physical characteristics: Original contains color illustrations

資料番号: AA1930011010

レポート番号: JAXA-SP-19-007

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詳細情報 詳細情報について

  • CRID
    1050292561232701696
  • NII論文ID
    120006839151
  • ISSN
    24332232
  • Web Site
    http://id.nii.ac.jp/1696/00046340/
  • 本文言語コード
    ja
  • 資料種別
    conference paper
  • データソース種別
    • IRDB
    • CiNii Articles
    • KAKEN

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