2010/08/01 by S. Mahmood Borghei, Seyed Mahmood Borghei, Aidin Jabbari Sahebari · 1 citation
Agricultural and Biological Sciences · Engineering · Environmental Science · #Hydraulic flow and structures #Hydrology and Sediment Transport Processes #Soil erosion and sediment transport
paper · doi:10.1080/00221686.2010.492107
crossref issued 2010/08/01 · crossref published 2010/08/01 · crossref published-print 2010/08/01 · openalex publication_date 2010/08/01 · crossref published-online 2010/09/08 · crossref created 2010/09/12 · crossref deposited 2019/06/04 · openalex created_date 2025/10/10 · crossref indexed 2026/08/01 · openalex updated_date 2026/08/01
High bed-shear stress resulting from secondary flows and velocity increase at a channel junction cause local erosion and deposition in natural rivers and earth-lined channels. Herein, the scour patterns at the junction of two loose bed channels were studied under clear-water conditions. The main dimensionless variables are the angle between the two approach flow branches, the discharge and width ratios of the tributary to the downstream channel branches, and the ratio of the mean downstream velocity to the threshold velocity. The results indicate that the position of the maximum scour depth temporally moves to the outer wall and upstream to the main channel, as affected by the dimensionless variables. The effects of these variables are given in graphs and are expressed with a formula for maximum scour depth.