Impact of the Contraction Rate of the Flow and the Local and CriItical Velocities on the Scour at Abutments

People, Buildings and Environment 2016: Conference Proceedings. Vol.4 2016
Boriss Gjunsburgs, Gints Jaudzems, Jeļena Govša

The aim of this study is to estimate the impact of hydraulic contraction rate of the flow and, consequent ly, the local and critical velocities on the local scour at abutments. Experiments in a flume confirmed a considerable effect of the contraction rate of flow on the local velocity, backwater, and the depth, width, and volume of scour near the vertical abut ment wall in steady and unsteady flows under clear water condition and in a uniform sand river bed: with increasing contraction rate of the flow, the local velocity, backwater values, and scour depth increase. A

Keywords
abutments; grain size ; riverbed stratification; scour depth

Gjunsburgs, B., Jaudzems, G., Govša, J. Impact of the Contraction Rate of the Flow and the Local and CriItical Velocities on the Scour at Abutments. In: People, Buildings and Environment 2016: Conference Proceedings. Vol.4, Czech Republic, Luhačovice, 28 Sep-1 Oct., 2016. Brno: Brno University of Technology, 2016, pp.157-166. ISSN 1805-6784.

Publication language
English (en)