Effects of Spur Dyke's Orientation on Bed Variation in Channel Bend
作者机构：Aligarh Muslim UniversityAligarhIndia
出 版 物：《Hydro Science & Marine Engineering》 (水利科学与海洋工程（英文）)
年 卷 期：2021年第3卷第2期
页 面：1-9页
主 题：Spur dykes Inner bank Outer bank Bridge pier Curved channel Location
摘 要：Spur dykes also known as Groynes are often used to either divert or attract the flow from the main structure to safeguard their *** structures may be bridge piers,abutments or any similar hydraulics *** dykes are also used to save the cutting of banks on concave side of *** of work have been done in recent past on spur dykes by many investigators in which various hydraulic and geometrical parameters of spur dykes such as discharge,sediment size,flow velocity,shear stress,spur dykes shape,size and submergence *** studied in *** mostly all the studies were pointed out in straight open *** few studies were done in curved channel and only their similar effects were *** present thesis main emphasis is given to study the effect of orientation and location of spur dykes in meandering channel on the bed of downstream *** the present study experimental work has been carried out in 80°bend and constant discharge(Q=4.5 l/s)is allowed to pass in channel without spur *** is found that maximum scouring occurs at angular displacementθ=60°to 80°in the vicinity of outer *** minimize this scouring,spur dyke has been installed at angular displacementθ=20°,40°&60°by changing the dyke angleα=60°,90°&120°*** is found that scouring atθ=60°is reduced by installing spur dyke at angular displacementθ=40°which is oriented atα=60°and scouring atθ=80°is reduced by installing spur dyke at angular displacementθ=60°which is oriented atα=60°.
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