3D flow field in a scour hole at a wing-wall abutment

Dey, Subhasish ; Barbhuiya, Abdul Karim (2006) 3D flow field in a scour hole at a wing-wall abutment Journal of Hydraulic Research, 44 (1). pp. 33-50. ISSN 0022-1686

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Official URL: http://www.tandfonline.com/doi/abs/10.1080/0022168...

Related URL: http://dx.doi.org/10.1080/00221686.2006.9521659


Experiment was conducted in a laboratory flume to measure the 3D turbulent flow field by an acoustic Doppler velocimeter in a scour hole at a 45? wing-wall abutment under a clear water regime. The profiles of time-averaged velocity components, turbulence intensity components, turbulent kinetic energy and Reynolds stresses at different azimuthal planes are presented. In the upstream, vector plots of flow field at azimuthal and horizontal planes show the presence of a large primary vortex associated with a downflow within the scour hole. In the downstream, the flow is upward. The bed shear stresses within the scour hole are estimated from the Reynolds stresses and the velocity gradients. The data presented in this study would be useful to the researchers for the future development and validation of theoretical models of flow field in a scour hole at bridge abutments.

Item Type:Article
Source:Copyright of this article belongs to International Association of Hydraulic Engineering and Research.
Keywords:Abutments; Three-dimensional Flow; Turbulent Flow; Open Channel Flow; Scour; Sediment Transport; Hydraulics
ID Code:79046
Deposited On:24 Jan 2012 07:38
Last Modified:24 Jan 2012 07:38

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