In the present work, a resistance equation has been developed empirically for the alluvial channel by using a large database of flume and field experimental observations. Advantage of the present model is that it includes the effect of Froude number, Reynolds number and particle relative roughness parameter on friction factor. Developed model predicts well the friction factor in the alluvial channel. The validity of the equation is tested with most recent experimental and field observations and is found in good agreement. Curves of friction factor at different relative roughness have been developed for the field application.
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Bimlesh Kumar (2011) studied this question.
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