Consider a parallel-plate channel with wall spacing 2H. If the logarithmic velocity profile given by Eq. (10.5-16)
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Consider a parallel-plate channel with wall spacing 2H. If the logarithmic velocity profile given by Eq. (10.5-16) is assumed to apply throughout the channel and if Re is based on the hydraulic diameter, show that the expression for the friction factor is nearly identical to Eq. (10.5-26). This illustrates how the near-universality of the law of the wall underlies the success of the hydraulicdiameter approach for calculating f for turbulent flow in noncircular channels.
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Related Book For 
Introduction To Chemical Engineering Fluid Mechanics
ISBN: 9781107123779
1st Edition
Authors: William M. Deen
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