Turbulent near wake behind square cylinder of finite length on ground plane

Shiki Okamoto, Kazumi Tsunoda, Tokujirou Takagi, Eiji Okada, Kenichi Kitani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

This paper describes the experimental study on the process of the disappearance of the arch vortices shedding from a square cylinder of finite length, and the accompanying changes in the turbulent near wake, as a function of the aspect ratio of a square cylinder. The experiment was carried out in a circuit type wind tunnel having a 200mm × 200mm working section of 2000mm length at the Reynolds number 9200. The time-mean velocity and turbulence intensities were measured by Laser-Doppler Velocimeter. Furthermore the vortices formation was observed by flow visualization in a water channel at Re=4600. Consequently, the details of flow pattern in the turbulent near wake behind a square cylinder were obtained with the information of shedding arch vortices and horse-shoe vortices. The range of aspect ratio of shedding arch vortices seems to be more than H/D=0.7, while the horse-shoe vortices are generated around a square cylinder for all aspect ratios in this experiment.

Original languageEnglish
Title of host publicationAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
EditorsT.T. Huang, J. Turner, M. Kawahashi, M.V. Otugen
Place of PublicationNew York, NY, United States
PublisherASME
Pages195-216
Number of pages22
Volume229
Publication statusPublished - 1995
EventProceedings of the 1995 ASME/JSME Fluids Engineering and Laser Anemometry Conference and Exhibition - Hilton Head, SC, USA
Duration: 1995 Aug 131995 Aug 18

Other

OtherProceedings of the 1995 ASME/JSME Fluids Engineering and Laser Anemometry Conference and Exhibition
CityHilton Head, SC, USA
Period95/8/1395/8/18

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Okamoto, S., Tsunoda, K., Takagi, T., Okada, E., & Kitani, K. (1995). Turbulent near wake behind square cylinder of finite length on ground plane. In T. T. Huang, J. Turner, M. Kawahashi, & M. V. Otugen (Eds.), American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED (Vol. 229, pp. 195-216). New York, NY, United States: ASME.