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Closed Conduit Hydraulics - Darcy-Weisbach Equation
The Darcy-Weisbach equation is used to determine flow characteristics in closed conduit systems (pipes). It is probably more common than the Hazen-Williams equation due to it being able to solve for systems in both laminar AND turbulent flow.
- headloss
(ft)
- friction factor
, length
- length
(ft)
- diameter
(ft)
- velocity
- gravity g
Friction Factor
The friction factor is either given or must be calculated using a Moody-Stanton diagram (available in both the AIO and CERM). Getting the friction factor from a Moody-Stanton chart requires the Reynolds Number
, and relative roughness
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