POISEUILLE’S LAW FOR BULK FLOW

BULK FLOW, Q, IS PROPORTIONAL TO THE PRESSURE

DIFFERENCE ACROSS THE PIPE OR PORE, AND THE

PROPORTIONALITY CONSTANT IS LP , THE HYDRAULIC

CONDUCTIVITY:

Q = LP ?P

IN A RIGHT CIRCULAR CYLLINDER, THE HYDRAULIC

CONDUCTIVITY IS

LP = ?a4/8??x

a = PORE RADIUS ?x = PORE LENGTH

? = FLUID VISCOSITY

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