Influence of secondary flow on distribution of suspended sediment concentration

• Main Authors: Cheng, Nian-Sheng, Wang, Zhi-Qian.
• Other Authors: School of Civil and Environmental Engineering
• Format: Article
• Language: English
• Published: 2012
• Subjects: DRNTU::Engineering::Civil engineering::Water resources
• Online Access: https://hdl.handle.net/10356/83674; http://hdl.handle.net/10220/7669
• Institution: Nanyang Technological University

This research attempts to qualitatively evaluate the effects of secondary flow on the distribution of suspend sediment concentration. The analysis is simplified using a special mode of secondary flows generated by longitudinal bedforms. In the presence of secondary flows, the distribution may be significantly distorted in the cross-sectional plane. Vertically, the concentration gradient increases in the upflow zone; laterally, the concentration distribution may vary periodically. The motion of suspended sediment particles are trapped in the retention zone and the concentration is homogenized.