Evaluating the Water Entrainment of Density Current in Converging Reaches and Compare it with Constant and Diverging Reaches

Document Type : Research Paper

Authors

1 Ph. D. Candidate of Water Structures, Shahid Chamran University of Ahwaz.

2 Professor of Water Sciences Engineering, Shahid Chamran University of Ahwaz.

3 Associated Professor of Water Sciences Engineering, Shahid Chamran University of Ahwaz.

Abstract

Density current is one of the most important phenomena that affect sediment processes and water quality in reservoirs and other water resources. Variation of cross sections in natural channels is inevitable and affects hydraulic parameters of density currents. The recent study evaluates the water entrainment of density currents in converging reaches. The experiments were conducted in a flume with 6.0 m length, 60 cm depth and 72.5 cm width by using three converging degrees (8, 16 and 25) and with different discharges and concentrations in hydraulic modeling laboratory of Shahid Chamran University of Ahwaz. Equations were formulated to estimate the water entrainment in converging reaches with different angles and finally an equation was proposed for converging, constant and diverging reaches using experimental data which were gathered from other researchers.

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History

  • Receive Date: 04 February 2012
  • Revise Date: 01 October 2014
  • Accept Date: 31 October 2012
  • Publish Date: 22 November 2013

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