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Poiseuille flow
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Poiseuille flow

physics
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Poiseuille flow describes the laminar (nonturbulent) flow of fluids through circular tubes. This relationship was mathematically formulated by French physician Jean-Louis-Marie Poiseuille and independently by German engineer Gotthilf Hagen, leading to the Hagen-Poiseuille equation.1

The equation indicates that the flow rate is determined by the fluid's viscosity, the pressure drop along the tube, and the tube's diameter. This principle is fundamental in understanding fluid mechanics, particularly in scenarios involving steady flow within confined spaces. Turbulence, a more chaotic flow state, can occur at higher flow rates or specific conditions, deviating from Poiseuille's law.123

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3 Britannica Sources
  1. Jean-Louis-Marie Poiseuille
  2. fluid mechanics - Stresses in laminar motion
  3. fluid mechanics - Turbulence

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