Year: 2024
Type: book-chapter
Abstract: Flow characteristics are the driving force to the riverbed evolution in straight channel with crisscross bars.The variation laws of longitudinal velocity, transverse velocity and turbulent intensity were studied by flume experiment.The results show that: ① the longitudinal time-average velocity decreases along the channel direction and its transverse distribution presents the velocity at the edge of the bar is the largest, far from the bar takes the second, and on the bar is the smallest.The transverse time-average velocity is mainly the periodic change of flow direction.② the longitudinal turbulence intensity tends to increase along the channel, which the increase amplitude decreases from upstream to downstream.The transverse turbulence intensity is mainly the largest in the middle of the bar, followed by the head and the tail.
Authors: Xi Wang, Jinyou Lu, Zhongwu Jin, Zhaohui Chai
Institution: Changjiang River Scientific Research Institute
Language: English
Subfield: Earth-Surface Processes
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: hybrid
Award: G1103876705
OpenAlex ID: W4395041920