Two‐Dimensional Channel Flows over Rough Surfaces

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Abstract
A single equation model for predicting the velocity distribution in bounded shear flow is presented. This equation predicts the velocity profile in the viscous sublayer, the buffer zone, the logarithmic or inertial zone, and the outer or wake region in conduit and channel flows provided that secondary or crossflow is weak or absent. The model has been verified using measured velocity profile data from several conduit and channel flows with different degrees of boundary roughness and with a range of gross flow Reynolds numbers.