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Characteristics of supercritical flow in rectangular channel Sumit Gandhi* and Vishal Yadav Department of Civil Engineering, Jaypee University of Engineering and Technology, Guna, MP, India. Accepted 10 October, 2013 The present study deals with the supercritical flow characteristics and the effort has been made to verify analytical and empirical relations based on extensive experimentation for different characteristics namely: sequent depth ratio (h /h ), efficiency of jump (E /E ), relative height of jump (h /E ) and relative 2 1 2 1 j 1 length of jump (L/h ). Also, the existing models for different channel conditions are discussed; j 2 significance of Froude number and Reynolds number for a range of velocity mentioned in literatures are highlighted; models proposed by different authors and its validation were also explained. Undular jump formation and the role of turbulent boundary layer were also explained for Froude number varying between 1.3-2.3. All the characteristics are found suitable with existing relations and can be used as guidelines for the analysis of different channel and channel conditions. Key words: Froude number, Reynold’s number, characteristics curve, shear stress, boundary layer thickness, undular jump.
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