Turbulence Generated in Active Grid Mode Using a Multi-Fan Wind Tunnel

• OZONO Shigehira

  Department of Applied Physics, University of Miyazaki

• MIYAGI Hiromori

  Department of Applied Physics, University of Miyazaki

• WADA Kazuhiro

  Oki Software Corp.

Abstract

The wind tunnel used is equipped with an array of small fans (9 columns×11 rows), each of which is independently controlled via a personal computer. To establish an efficient driving mode for generating high-Reynolds number isotropic turbulence, a new driving mode (“active grid mode”) is attempted where the active and inactive fans are grid-like arranged. The characteristics of turbulence are investigated for two kinds of external fluctuated signals. The flow structure of the turbulence generated by the active grid mode is proposed.

Journal

• Journal of Fluid Science and Technology

  Journal of Fluid Science and Technology 2 (3), 643-654, 2007

  The Japan Society of Mechanical Engineers

Keywords

• Active Turbulence Generation
• Multifan Wind Tunnel
• Isotropic Turbulence
• Intensity
• Scale
• High Reynolds Number

Details

• CRID: 1390001205244796160
• NII Article ID: 130000077159
• DOI: 10.1299/jfst.2.643
• ISSN: 18805558
• Web Site: http://www.jstage.jst.go.jp/article/jfst/2/3/2_3_643/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed