# Darcy-Weisbach equation

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## Darcy-Weisbach equation

[¦där·sē ′vīs‚bäk i‚kwā·zhən]
(fluid mechanics)
An equation for the loss of head due to friction hf during turbulent flow of a fluid through a duct of any shape; in the case of a circular pipe, hf = f (L/d)(V 2/2 g), where L and d are the length and diameter of the pipe, V is the fluid velocity, g the acceleration of gravity, and f a dimensionless number called Darcy number 1.
References in periodicals archive ?
The pump head calculations, including piping, all fittings, valves, and devices, are achieved by using the Darcy-Weisbach equation with given flow parameters.
The pump head calculations, including piping, all fittings, valves, and devices are achieved by using the Darcy-Weisbach equation with given flow parameters.
Using the f calculated by the Blasius equation, associated with the Darcy-Weisbach equation, this exponent is equal to 1.
2] which could be calculated with Darcy-Weisbach equation [13]:
The Darcy-Weisbach equation for pressure drop in a pipe is:
The inherent resistance of the test rig, which corresponded well to the Darcy-Weisbach Equation for flow in a smooth tube, was subtracted from the measured data.
The small background resistance of the system, which again corresponded to the Darcy-Weisbach equation for flow in a smooth duct, was removed from the regression line.
The pressure drop can be estimated using the Darcy-Weisbach equation for turbulent flow in pipes.
The actual pressure drop is calculated in Column H using the Darcy-Weisbach equation, converted to inches of water.
The resistance corresponded well to the Darcy-Weisbach equation for the whole flow range examined, and the additional resistance was subtracted from the total measured media resistance.
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