一様流中に置かれた正方形角柱の空気力特性の数値予測に関する研究

• 石原 孟

  東京大学大学院　工学系研究科総合研究機構

• 岡 新一

  フルーエントアジアパシフィック株式会社

• 藤野 陽三

  東京大学大学院　工学系研究科社会基盤学専攻

書誌事項

タイトル別名

• NUMERICAL STUDY OF AERODYNAMIC CHARACTERISTICS OF SQUARE PRISM IN A UNIFORM FLOW

抄録

In this study, aerodynamic characteristics of square prism in a uniform flow with respect to various angles of attack were investigated using LES turbulence model. As a result, mean forces, drag and lift, mean surface pressure, and mean flow patterns for all attack angles were met well with the experiments. It was found that computational domain in the spanwise direction gave strong impacts on fluctuations, drag, lift, and pressure, indicating that spanwise length should be long enough to evaluate quantitatively. Regarding power spectral density for fluctuating aerodynamic forces, the predictions were in good agreements with experiments in dominated frequencies. Finally, we proposed an estimation method of fluctuating aerodynamic forces with no spanwise length dependency, and confirmed the validity of the approach using the numerical results.

収録刊行物

• 土木学会論文集Ａ

  土木学会論文集Ａ 62 (1), 78-90, 2006

  公益社団法人 土木学会

キーワード

• numerical study
• LES
• square prism
• mean and fluctuating aerodynamic force
• power spectral
• spanwise sensitivity

詳細情報

• CRID: 1390001205253733760
• NII論文ID: 130004466981
• DOI: 10.2208/jsceja.62.78
• ISSN: 18806023
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可