NUMERICAL SIMULATION OF OPEN-CHANNEL FLOW IN A CURVED CHANNEL WITH BEDFORM OF A RIVER BEND

• INOKUMA Hiroshi

  Kobe University

• NAKAYAMA Akihiko

  Kobe University

Bibliographic Information

Other Title

• 湾曲河川河床形状を有する湾曲開水路乱流の数値シミュレーション

Abstract

Turbulent flow around a channel bend has been computed by Large Eddy Simulation (LES) method. The bed forms of the channels considered are contoured like those of natural rivers with pointbars and the calculation results are compared with those of flows around a similar bend with a flat bed. The simulated flows are of laboratory-scale flows and no special near-wall model is applied but the results show important features of the flow around a bend and a reasonable agreement with the available experimental results. Particularly, the secondary flows near the outer bank along with the main secondary flows induced by the streamline curvature are reproduced well and the effects of the bed form on these flow and the turbulent characteristics are reproduced.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 67 (4), I_1021-I_1026, 2011

  Japan Society of Civil Engineers

Keywords

• Channel bend
• Open-channel flow
• LES
• Secondary flows
• Turbulence structure

Details

• CRID: 1390282680327543808
• NII Article ID: 130004557437
• DOI: 10.2208/jscejhe.67.i_1021
• ISSN: 2185467X
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed