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NAOSITE : Nagasaki University's Academic Output SITE > Faculty of Engineering > Bulletin > Reports of the Faculty of Engineering, Nagasaki University > Volume 32, No. 58 >

スパン方向へ生成される平板翼の後流のコヒーレント構造に関する研究 : 第 1 報;渦度輸送方程式による後流構造の解析


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Title: スパン方向へ生成される平板翼の後流のコヒーレント構造に関する研究 : 第 1 報;渦度輸送方程式による後流構造の解析
Other Titles: A Study of Coherent Structure of the Wake of a Flat Plate Blade Generated to the Span Direction : 1st. Report; Analysis of the Wake Structure by Equation for the Longitudinal Mean Vorticity
Authors: 佐々木, 壮一 / 林, 秀千人 / 児玉, 好雄 / 井上, 良介
Authors (alternative): Sasaki, Soichi / Hayashi, Hidechito / Kodama, Yoshio / Inoue, Ryosuke
Issue Date: Jan-2002
Citation: 長崎大学工学部研究報告 Vol.32(58) p.61-68, 2002
Abstract: The spatial distribution of the vorticity and the Reynolds stress was analyzed by equation for the longitudinal mean vorticity for clarifying coherent structure of the wake of a flat plate blade generated to the span direction. The 3-dimensional flow field was formed by a numerical solver. The solver could be estimated the skin friction coefficient on a plate with high accuracy, moreover, we expanded the solver to junction grid system such as shaping continuous bluff body without distortion at trailing edge. According to the visualization of the 3-dimensional flow field with normalized helicity, the vertical vortex was caught at the tip-side of a blade where was interfered with the main flow and the 3-dimensional share layer. The vertical vortex induced plural oval Reynolds share stress ρ<v'w'>^^^- to the span direction, and lateral variation was generated by the regularity distribution of ρ<v'w'>^^^- with differential sign.
URI: http://hdl.handle.net/10069/5186
ISSN: 02860902
Type: Departmental Bulletin Paper
Appears in Collections:Volume 32, No. 58

Citable URI : http://hdl.handle.net/10069/5186

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