Kennedy theory for design of stable channels in alluvial soil states that the critical velocity V0 (m/s) in terms of hydraulic mean depth D (m) is:
Choose the correct answer
V0 = 0.55 m D^0.64
V0 = 0.55 D^0.64 x m (where m = channel index)
V0 = K (D)^n, with K=0.55 and n=0.64 for Kennedy original
V0 = C sqrt(DR) (Chezy type)
Correct Answer
C. V0 = K (D)^n, with K=0.55 and n=0.64 for Kennedy original
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Kennedy equation: V0 = K x D^n (critical velocity = Kennedy multiplier x (hydraulic depth)^n). Original: V0 = 0.55 m D^0.64, where m = critical velocity ratio (=1 for Upper Bari Doab sand), D = hydraulic depth (A/T). This gives a sediment-transport stable channel.
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