Experimental Study Of The Effect Of The Ripple Bed Forms On The Bed Shear Stress

Document Type : Research Paper



Interaction between water flow and bed erodibility, which is associated with sediment transport and creat bed forms. Ripples are the smallest of the bed forms. Experiments  were performed with variety slopes of 0.0005 to 0.003 and discharges of 10 to 40 L/S, on the artificial ripple in  the hydraulic Laboratory of Shahrekord  University.Velocity measurements were collected using an Acoustic Doppler Velocimeter. It was observed the peak value of  bed shear stress was appear on the midpoint of upstream surface and the lowest value appear on the crest. From the crest to trough, the general bed shear stress was in a trend of increasing. It was also observed that in the case of  ripples bed forms were consist of about 26%  of total bed shear stress.


Volume 38, Issue 2 - Serial Number 2
October 2015
Pages 125-135
  • Receive Date: 24 December 2013
  • Revise Date: 10 October 2015
  • Accept Date: 24 June 2014
  • Publish Date: 23 September 2015