Energy dissipation on block ramps with large scale roughness

Ahmad, Z. and Srisvastava, D. (2014). Energy dissipation on block ramps with large scale roughness. In: Hubert Chanson and Luke Toombes, Hydraulic structures and society - Engineering challenges and extremes. 5th IAHR International Symposium on Hydraulic Structures, Brisbane, Australia, (1-8). 25-27 June 2014. doi:10.14264/uql.2014.41

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Author Ahmad, Z.
Srisvastava, D.
Title of paper Energy dissipation on block ramps with large scale roughness
Conference name 5th IAHR International Symposium on Hydraulic Structures
Conference location Brisbane, Australia
Conference dates 25-27 June 2014
Proceedings title Hydraulic structures and society - Engineering challenges and extremes
Journal name ISHS 2014 - Hydraulic Structures and Society - Engineering Challenges and Extremes: Proceedings of the 5th IAHR International Symposium on Hydraulic Structures
Place of Publication Brisbane, Australia
Publisher The University of Queensland
Publication Year 2014
Year available 2014
Sub-type Fully published paper
DOI 10.14264/uql.2014.41
Open Access Status DOI
ISBN 9781742721156
Editor Hubert Chanson
Luke Toombes
Start page 1
End page 8
Total pages 8
Language eng
Abstract/Summary Block ramps represent a steep sloped short section of a channel provided with large roughness and used as grade stabilization structures. Experimental study on block ramp with macro roughness has been carried out in this paper for studying the water surface profile over the ramp and also for quantification of energy loss. Measured water surface profiles over ramps of various slopes reveal that steeper slope is reigned mainly by non-uniform flow, however, uniform flow occurs on major part of the ramps for relatively less steeper slopes. The energy dissipation over block ramp with large roughness is more for higher size of the boulders. The energy dissipation computed using existing equation is in good agreement for low slope (1V:9.87H), while it deviates from the observed values for higher slopes (1V:6H) and (1V:3H). Energy dissipation per unit length of the ramp increases with increase in the ramp slope.
Keyword Block ramp
Energy dissipation
Water surface profile
Roughness
Boulder
Gradation
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Non-UQ

 
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Created: Wed, 14 May 2014, 00:39:01 EST by Anthony Yeates on behalf of Scholarly Communication and Digitisation Service