Poiseuille’s equation
Quick Summary
Poiseuille's equation, also known as the Hagen-Poiseuille equation, describes the flow rate of a fluid in laminar (nonturbulent) motion through a circular tube. This mathematical relationship was formulated by French physician and physiologist Jean-Louis-Marie Poiseuille.1
The equation indicates that the flow rate is influenced by:
* The fluid's viscosity.1
* The pressure drop along the tube.1
* The diameter of the tube.1
Poiseuille's work stemmed from his interest in blood circulation, leading him to conduct experiments on fluid flow in narrow tubes. This equation is fundamental in understanding fluid dynamics, particularly in scenarios involving smooth, non-turbulent flow.12
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