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The effect of plane wall on fluid forces acting on a circular cylinder

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 45 Issue 1 Page 57-64
published_at 1994-10
KJ00000156994.pdf
[fulltext] 543 KB
Title
壁面の影響を受ける円柱に作用する流体力
The effect of plane wall on fluid forces acting on a circular cylinder
Creators Saitou Takashi
Creators Akamatu Toshiyuki
Creators Saitou Ken
Creators Kawamoto Nobuyuki
Source Identifiers
It is the purpose of this paper to make clear the change of fluid forces and pressure distribution along the surface of circular cylinder with the change of distance between circular cylinder and plane wall, and vortex shedding from a circular cylinder. We measured of fluid forces acting on a circular cylinder in the Reynolds number range of (10)^4 to 7×(10)^4 and pressure distribution along the surface of circular cylinder at the Reynolds number of 7×(10)^4. The following properties became evident often examining the experimental results. The Strouhal number calculated from the variation of lift in the region of spacing ratio Y/D=0~0.3 are nearly zero. The physical meaning of these fact is considered to be formation of separation region behind a circular cylinder. In region of the distance between a circuler cylinder and plane wall Y/D=0~0.7,position of stagnation point separation are influenced considerably by the spacing ratio. And in the case of Y/D>2,it can be consider that there is no effect of wall.
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1994-10
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部