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

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

Research output: Contribution to conferencePaper

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
Pages195-216
Number of pages22
Publication statusPublished - 1995 Dec 1
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

ASJC Scopus subject areas

  • Engineering(all)

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    Okamoto, S., Tsunoda, K., Takagi, T., Okada, E., & Kitani, K. (1995). Turbulent near wake behind square cylinder of finite length on ground plane. 195-216. Paper presented at Proceedings of the 1995 ASME/JSME Fluids Engineering and Laser Anemometry Conference and Exhibition, Hilton Head, SC, USA, .