Abstract
This discussion provides highlights with regard to determination of the appropriate length for boundary layer development over non-uniform sand bed channels with and without seepage. It is demonstrated that the compound effects of Kármán’s coefficient κ and virtual origin should be accounted to quantify the behaviour of roughness length over non-uniform sand bed channels with seepage.
Notes
* Discussion of ‘Boundary layer development over non-uniform sand rough bed channel’, by Anurag Sharma and Bimlesh Kumar (2017). ISH Journal of Hydraulic Engineering, DOI:10.1080/09715010.2017.1391133.