Effect of aspect ratio on three-dimensional flow in square cavity

Shiki Okamoto, Yoko Yamanishi, Fumiaki Murayama, Takashi Mima, Satoshi Eshima

研究成果: Article

1 引用 (Scopus)

抄録

This paper describes the complicated flow associated with the three-dimensional surface-mounted square cavities. The experiment was carried out in two types of wind tunnels and a water channel. The effect of the aspect ratio (cavity length to depth : L/D=1-8) of the cavity has been investigated in terms of the overall cavity drag increment, the surface pressure distribution and the velocity profiles in the flow inside the cavity. The flow pattern inside the cavities was observed by the flow visualization. The three-dimensionality of the primary vortex in the cavities have been estimated from location of the centre along the span of the cavity. Consequently it was found that (i) a remarkable decrease of the drag occurs at L/D=4, and (ii) two cells structure for L/D=4 and three cells structure for L/D)=8 exist in the velocity profile inside the cavity.

元の言語English
ページ(範囲)544-551
ページ数8
ジャーナルNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
73
発行部数2
出版物ステータスPublished - 2007 2
外部発表Yes

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three dimensional flow
Drag
aspect ratio
Aspect ratio
cavities
Flow visualization
Pressure distribution
Flow patterns
Wind tunnels
Vortex flow
Water
drag
Experiments
velocity distribution
flow visualization
wind tunnels
cells
pressure distribution
flow distribution
vortices

ASJC Scopus subject areas

  • Mechanical Engineering

これを引用

Effect of aspect ratio on three-dimensional flow in square cavity. / Okamoto, Shiki; Yamanishi, Yoko; Murayama, Fumiaki; Mima, Takashi; Eshima, Satoshi.

:: Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 巻 73, 番号 2, 02.2007, p. 544-551.

研究成果: Article

Okamoto, Shiki ; Yamanishi, Yoko ; Murayama, Fumiaki ; Mima, Takashi ; Eshima, Satoshi. / Effect of aspect ratio on three-dimensional flow in square cavity. :: Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B. 2007 ; 巻 73, 番号 2. pp. 544-551.
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