Unit Stream Power Equation for Gravel

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Abstract
The basic assumptions used in the derivation of bedload or gravel transport equations are reviewed and examined to determine their validities. Laboratory data indicate that unit stream power is more desirable than other variables for the determination of gravel transport rate or concentration. A dimensionless unit stream power equation for gravel transportation is developed based on well established theories in turbulence and fluid mechanics. Comparison between this new equation and other well‐known equations indicates that the new dimensionless unit stream power equation for gravel transportation is more accurate than others for the gravel data compared in this paper.

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