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Forums
Physics
Classical Physics
Understanding Poiseuille Equation
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[QUOTE="boneh3ad, post: 5442613, member: 268837"] The Poiseuille equation has nothing to do with inviscid flow. You can't draw any conclusions about the inviscid case from that equation. And yes, a pressure difference would be required to start an inviscid pipe flow in motion, but not to maintain that motion. If you had a constant pressure difference in that case, then you would have a constantly accelerating flow. With no pressure difference, an inviscid flow just maintains a constant velocity. When viscousity is included, you need a pressure difference to overcome the resistance of viscosity, thus the Poiseuille equation. [/QUOTE]
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Classical Physics
Understanding Poiseuille Equation
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