Velocity and turbulence at a wing-wall abutment |
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Authors: | Abdul?Karim?Barbhuiya Email author" target="_blank">Subhasish?DeyEmail author |
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Affiliation: | (1) Department of Civil Engineering, Indian Institute of Technology, 721 302 Kharagpur, India |
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Abstract: | Experimental investigation of the 3D turbulent flow field around a 45‡ wing-wall abutment, resting on a rough rigid bed, is
reported. The experiment was conducted in a laboratory flume using the Acoustic Doppler Velocimeter (ADV). Profiles of time-averaged
velocity components, turbulent intensity components, turbulent kinetic energy and Reynolds stresses at different azimuthal
planes are presented. Vector plots of flow fields at azimuthal and horizontal planes show the presence of a primary vortex
associated with the downflow in the upstream side of the abutment and a wake vortex on the downstream side. The shear stresses
acting on the bed around the abutment are estimated from the Reynolds stresses and velocity gradients. The data presented
in this study would be useful to researchers for future development and comparison of theoretical models of flow fields around
bridge abutments. |
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Keywords: | Abutments three-dimensional flow turbulent flow open channel flow hydraulics |
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