INVESTIGATION ON TURBULENCE AND MEAN CHARACTERISTICS OF CANYON VORTICES IN REAL URBAN CANYONS

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  • KATSUKI Takeaki
    Lecturer, Department of Civil Engineering, Fukui National College of Technology, Dr. Eng.
  • SATO Ayumu
    Research Scientist, Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry, Dr. Eng.
  • MICHIOKA Takenobu
    Research Scientist, Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry, Dr. Eng.
  • HAGISHIMA Aya
    Assoc. Prof., Interdisciplinary Graduate School of Engineering Sciences, Kyusyu Univ., Dr. Eng.

Bibliographic Information

Other Title
  • 実在都市キャニオン内の循環渦の構造および乱流挙動の解明
  • 実在都市キャニオン内の循環渦の構造および乱流挙動の解明 : 実在都市キャニオン内の流れ場に関する風洞実験(その2)
  • ジツザイ トシ キャニオン ナイ ノ ジュンカンウズ ノ コウゾウ オヨビ ランリュウ キョドウ ノ カイメイ : ジツザイ トシ キャニオン ナイ ノ ナガレバ ニ カンスル フウドウ ジッケン(ソノ 2)
  • Wind tunnel experiments on flow field in real urban canyons (Part 2)
  • 実在都市キャニオン内の流れ場に関する風洞実験　（その２）

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Abstract

In previous study, wind tunnel experiment for a real apartment complex was conducted to confirm the reproducibility of flow field with field measurement values. In this study, a wind tunnel experiment for the same complex was conducted to comprehend the behaviors of turbulence and mean characteristics of canyon vortices within real urban canyons. Mean flow field within the each canyon was the almost same flow motion which formed large canyon vortex. It was found that within the real canyon, the helical vortex generated by the flow from the side edge and the roof of the upstream building was formed. The detailed motion of the helical vortex is influenced by the building shapes, street width and positions of surrounding buildings.

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