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单词 Poiseuille's equation
释义 Poiseuille's equation
An equation relating the volume flow rate, V, of a fluid through a cylindrical tube to the pressure difference, p, between the ends of the tube:
V = πpr4/8lη
, where r is the radius and l the length of the tube; η is the viscosity of the fluid. It applies if the Reynolds number is less than 2000 and was first stated by Jean Louis Poiseuille (1799–1869)
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更新时间:2025/6/22 23:45:51