A novel method for the inclusion of pipe roughness in the Hazen-Williams equation
FME TRANSACTIONS(2015)
Abstract
Accurate estimation of friction losses in pipes is an important engineering task. Due to their simplicity, empirical equations are often used for determining pressure drops in pipes. One of the most widely used empirical equations for calculation of pressure drops in straight pipes is Hazen-Williams equation. In this paper, the authors have established a simple method of the inclusion of pipe roughness in Hazen-Williams equation by comparison with a widely accepted DarcyWeisbach method coupled with Colebrook friction factor formula for developed turbulent flow.
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Key words
Hazen-Williams equation,pressure drop,pipe roughness,turbulent flow
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