Author(s): E. J. Mckeogh; G. K. Kiely

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Abstract: Extensive research has been carried out in the past 20 years on velocity and shear stress measurements instraight compound channels.This work identified the interaction mechanisms between the deep main channeland floodplain.However,meandering channels with floodplains have received very little attention,even thoughthey are more prevalent in nature.In 1956 the U.S.Army Corps of Engineers,(1),examined the stage/dischargerelationship for meandering channels with floodplains,without reference to the flow structure.A study byToebes and Sooky,(2),in 1967,was amongst the first to measure velocity distributions in both meanderingmain channel and floodplain.Since then other significant contributions have been made by Ahmadi,(3),in 1980,Yen and Yen,(4),in 1983,and Ervine and Ellis,(5),in 1986.The above research identified the complex natureof flow and the need for further experimental studies.With this in mind a comprehensive research programmewas proposed in 1985,at the Hydraulics Research Laboratory at University College Cork,to measure velocityand turbulence in the following channel configurations:

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Year: 1989