半球頭部まわりの超音速逆墳射ジェット流れの三次元振動

• 藤田 昌大

  東京大学工学部総合研究機構ナノマテリアセンター

書誌事項

タイトル別名

• Three-Dimensional Oscillations of a Supersonic Opposing Jet Flow around a Hemispherical Nose.
• 半球頭部まわりの超音速逆噴射ジェット流れの三次元振動
• ハンキュウ トウブ マワリ ノ チョウオンソク ギャクフンシャ ジェット ナガレ ノ 3ジゲン シンドウ

抄録

Three-dimensional oscillations of a supersonic opposing jet flow around a hemispherical nose are investigated through numerical analysis that consists of an efficient implicit algorithm. The results show that axially asymmetric oscillations are reproduced in both stable and unstable region, and that frequency of oscillation in unstable region agrees well with existing experimental results. On the basis of the numerical results, the mechanism of oscillation in unstable region suggested in former study of the author is quantitatively validated, and the mechanism of oscillation in stable region is newly presented here. Also in unstable region, unsteady aerodynamic force on the hemispherical nose is shown to be axially asymmetric and rotating in circumferential direction.

収録刊行物

• 日本航空宇宙学会論文集

  日本航空宇宙学会論文集 50 (584), 373-379, 2002

  一般社団法人 日本航空宇宙学会

キーワード

• Fluid Dynamics
• Unsteady Flows
• Supersonic Jet
• Numerical Simulation

詳細情報

• CRID: 1390001204469687296
• NII論文ID: 10009687723
• NII書誌ID: AA11307372
• DOI: 10.2322/jjsass.50.373
• ISSN: 24323691
• ISSN: 13446460
• NDL書誌ID: 6301736
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6301736
• Web Site: https://www.jstage.jst.go.jp/article/jjsass/50/584/50_584_373/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可