Abstract

Friction facter and boundary shear stress distributions are ditermined for rectangular channels of a wide renge of Reynolds number and a renge of width-to-depth ratios (B/H) 0.5 to 10. The influence of wall effect on the boundary shear and maximum-velocity point occuring below the water surface are examined. The boundary shear distributions of open channels are discussed indetailed. By using the maximum-velocity point, the calculation method of the boundary shear distributions are proposed.

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