CURRENT MODELING OF WATER IN A RIVER MEANDER CONSIDERING CIVIL ENGINEERING PROBLEMS IN BUILDING THE COASTAL WALLS
Secondary flow in river bends leads to movement of river path (further bending).Depending on the river floor materials, terrain slope this can be a serious problem. In this paper we look at this problem in an old river in the south of Iran to show that how the inhabitants of older days,although not knowing fluid mechanics (secondary flows), circumvented the effects of these flows and flood management using experience. Close examinations of an old hydraulic structure along the river show that near the bends they created a crevasse like structure to branch out one of the violent river namely Karoon at the main bend near the center of Shooshtar city. Using this they constructed the oldest wheat mills on the path of the water taken from this crevasse that they could control the flow and also use this route for irrigations. It is well know that in river bends, creating crevasse can suppress the secondary flows and hence reduce bending of river substantially. We use some numerical modeling to show the flow structure in the meander with and without crevasse showing that the role of this old structure is substantial in reducing the secondary flow as well as flood control and also water resource management.
secondary flows crevasse river bends Iran Shooshtar
S.M.Mosaddad A.A.Bidokhti M.Ezam
Department of Physics, Shooshtar Azad University, Shooshtar branch, Iran Geophysics Institute, Tehran university, Iran Physical oceanography, IAU, Researches and sciences brach, Tehran, Iran
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
945-950
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）