期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2016
卷号：5
期号：5
页码：7885
DOI：10.15680/IJIRSET.2016.0505210
出版社：S&S Publications
摘要：Due to the drastic changes of bed condition and atmospheric pressure acting on the free surface thevelocity distribution is not uniform along the channel. Several other geometrical factors such as bends and boundariesin the channel also cause the flow velocity vector to have components in every possible direction. On bend, the flowvelocity increases enormously owing to centrifugal force forming a convex shape. The turbulence and velocityvariation along the flow increases with the density of floodplain vegetation. This sudden change of velocity due toturbulence cause energy losses and increased resistance to flow in the channel. In this research, some laboratoryexperimental investigation has been conducted, established in a flume of compound channel geometry bounded withvegetated flood plains. Analysis was done in order to determine effect of channel roughness on the curvature ofvelocity distribution along the depths of both main channel and the floodplain. The results show that the velocitydistribution parabolic curve along the floodplain reduces due to effect of riparian vegetation whereas the main channelvelocity is widely increased.
