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Local Scour of Armor Layer Processes around the Circular Pier in Non-Uniform Gravel Bed

1
Department of Soil and Water Conservation, National Chung Hsing University, Taichung City 40227, Taiwan
2
Innovation and Development Centre of Sustainable Agriculture (IDCSA), Department of Soil and Water Conservation, National Chung Hsing University, Taichung City 40227, Taiwan
3
Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
4
Civil Engineering Department, National Institute of Technology Hamirpur (NIT Hamirpur), Hamirpur 177005, India
*
Author to whom correspondence should be addressed.
Water 2019, 11(7), 1421; https://doi.org/10.3390/w11071421
Received: 27 June 2019 / Revised: 6 July 2019 / Accepted: 8 July 2019 / Published: 11 July 2019
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Abstract

Flume experiments have been carried out under clear water scour conditions to analyze the maximum equilibrium scour depth and scour processes in armored streambeds. A total of 85 experiments have been carried out using different diameters of circular piers and non-uniform gravels. A graphical approach for dimensionless scour depth in equilibrium condition around the circular pier in armored streambeds has been developed. As per this curve, the maximum dimensionless scour depth variation with dimensionless armor particle size depends on the densimetric particle Froude number (Frd50), and the decreasing rate of dimensionless scour depth decreases with the value of Frd50. View Full-Text
Keywords: pier scour; non-uniform sediment; armor layer; equilibrium scour depth processes; clear water scour condition pier scour; non-uniform sediment; armor layer; equilibrium scour depth processes; clear water scour condition
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Pandey, M.; Chen, S.-C.; Sharma, P.K.; Ojha, C.S.P.; Kumar, V. Local Scour of Armor Layer Processes around the Circular Pier in Non-Uniform Gravel Bed. Water 2019, 11, 1421.

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