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Flow around rectangular cylinders: pressure forces and wake frequencies

Norberg, Christoffer LU (1993) In Journal of Wind Engineering and Industrial Aerodynamics 49(1-3). p.187-196
Abstract
This paper concerns an experimental investigation of the flow around and pressure forces on fixed (non-vibrating) rectangular cylinders at angles of attack 0° - 90°. Pressure forces and moments for cylinders with side ratios B / A = 1, 1.62, 2.5 and 3 (shortest side A = 20 ram) were estimated from measurements of static pressure distributions at mid-span. Wake frequencies and associated Strouhal numbers were determined from hot wire measurements in the near-wake regions (A = 4 and 20 mm). With the smaller cylinders 12 side ratios within B / A = 1 - 5 were investigated. The free stream turbulence intensity was less than 0.06%, blockages less than 5% and aspect ratios L / A greater than 50. Reynolds numbers, based on A, ranged from about... (More)
This paper concerns an experimental investigation of the flow around and pressure forces on fixed (non-vibrating) rectangular cylinders at angles of attack 0° - 90°. Pressure forces and moments for cylinders with side ratios B / A = 1, 1.62, 2.5 and 3 (shortest side A = 20 ram) were estimated from measurements of static pressure distributions at mid-span. Wake frequencies and associated Strouhal numbers were determined from hot wire measurements in the near-wake regions (A = 4 and 20 mm). With the smaller cylinders 12 side ratios within B / A = 1 - 5 were investigated. The free stream turbulence intensity was less than 0.06%, blockages less than 5% and aspect ratios L / A greater than 50. Reynolds numbers, based on A, ranged from about Re = 400 to Re -- 3 × 104 (pressure measurements from about Re = 3 × 103). For the square cylinder, the measured pressure forces were used for calculations of quasi-steady galloping response in the plunging mode. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Wind Engineering and Industrial Aerodynamics
volume
49
issue
1-3
pages
187 - 196
publisher
Elsevier
external identifiers
  • scopus:0027791119
DOI
10.1016/0167-6105(93)90014-F
language
English
LU publication?
no
id
48a94e64-6eab-4820-8ce0-149dc1ba67e4
date added to LUP
2022-10-13 16:48:36
date last changed
2022-10-14 14:19:26
@article{48a94e64-6eab-4820-8ce0-149dc1ba67e4,
  abstract     = {{This paper concerns an experimental investigation of the flow around and pressure forces on fixed (non-vibrating) rectangular cylinders at angles of attack 0° - 90°. Pressure forces and moments for cylinders with side ratios B / A = 1, 1.62, 2.5 and 3 (shortest side A = 20 ram) were estimated from measurements of static pressure distributions at mid-span. Wake frequencies and associated Strouhal numbers were determined from hot wire measurements in the near-wake regions (A = 4 and 20 mm). With the smaller cylinders 12 side ratios within B / A = 1 - 5 were investigated. The free stream turbulence intensity was less than 0.06%, blockages less than 5% and aspect ratios L / A greater than 50. Reynolds numbers, based on A, ranged from about <i>Re</i> = 400 to <i>Re</i> -- 3 × 10<sup>4</sup> (pressure measurements from about <i>Re</i> = 3 × 10<sup>3</sup>). For the square cylinder, the measured pressure forces were used for calculations of quasi-steady galloping response in the plunging mode.}},
  author       = {{Norberg, Christoffer}},
  language     = {{eng}},
  number       = {{1-3}},
  pages        = {{187--196}},
  publisher    = {{Elsevier}},
  series       = {{Journal of Wind Engineering and Industrial Aerodynamics}},
  title        = {{Flow around rectangular cylinders: pressure forces and wake frequencies}},
  url          = {{http://dx.doi.org/10.1016/0167-6105(93)90014-F}},
  doi          = {{10.1016/0167-6105(93)90014-F}},
  volume       = {{49}},
  year         = {{1993}},
}