Hagen-Poiseuille law


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Hagen-Poiseuille law

[′häg·ən pwä·zȯi ‚lȯ]
(fluid mechanics)
In the case of laminar flow of fluid through a circular pipe, the loss of head due to fluid friction is 32 times the product of the fluid's viscosity, the pipe length, and the fluid velocity, divided by the product of the acceleration of gravity, the fluid density, and the square of the pipe diameter.