Free Online Darcy-Weisbach Pipe Head Loss Calculator

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Darcy-Weisbach Pipe Head Loss at Given Diameter, Roughness, and Flow

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Flow area Flow area X
Wetted perimeter Wetted perimeter X
Hydraulic radius Hydraulic radius X
Velocity, v Velocity, v X
Velocity head, hv Velocity head, hv X
Reynolds number, Re Reynolds number, Re X
Flow regime Flow regime X
Friction factor method Friction factor method X
Friction factor, f Friction factor, f X
Friction slope Friction slope X
Shear stress (tractive force), tau Shear stress (tractive force), tau X
Friction loss, Hf Friction loss, Hf X
Junction loss, Hm Junction loss, Hm X
Total loss, Hl Total loss, Hl X
Upstream HGL (See notes) Upstream HGL (See notes) X

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