Visualization of Turbulent Structure in Open-channel Flow with Vegetated canopies

• Nezu Iehisa

  京都大学

• Sanjou Michio

  京都大学

• Okamoto Takaaki

  京都大学

Bibliographic Information

Other Title

• A103 植生キャノピー開水路流れの乱流構造の可視化計測

Abstract

It is important in river environment and hydraulic engineering to reveal the hydrodynamic properties in vegetated open-channel flows, in which velocity profiles are largely changed in the vertical and spanwise directions. In particular, vegetated canopies generate coherent turbulent motions (such as sweeps and ejections) which promote erosions and depositions of sediment on beds.Therefore, it is needed to investigate these turbulence mechanism and coherent vortices in order to maintain the vegetations in actual rivers. In this study, we conducted turbulence measurements by using PIV technique, and revealed the turbulence structure in open-channel flows with vegetated canopies.

Journal

• Journal of the Visualization Society of Japan

  Journal of the Visualization Society of Japan 26 (Supplement2), 11-12, 2006

  The Visualization Society of Japan

Keywords

• vegetated open-channel flows
• coherent structure
• turbulence
• PIV

Details

• CRID: 1390001204618290688
• NII Article ID: 10018247141
• NII Article ID: 130003650400
• NII Book ID: AA11907562
• DOI: 10.3154/jvs.26.supplement2_11
• ISSN: 1884037X
• ISSN: 09164731
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed