In fluid dynamics, the Hagen–Poiseuille equation, also known as the Hagen–Poiseuille law, Poiseuille law or Poiseuille equation, is a physical law that gives the pressure drop in an incompressible and …

This equation is called Poiseuille’s law for resistance after the French scientist J. L. Poiseuille (1799–1869), who derived it in an attempt to understand the flow of blood, an often turbulent fluid.

May 29, 2024 · Poiseuille’s Law, a fundamental principle in fluid dynamics, offers critical insights into how the flow rate of a liquid is influenced by its viscosity and the pressure drop across the length of a …

J. L. M. Poiseulle and G. H. L. Hagen determined that the laminar flow rate of an incompressible fluid along a pipe is proportional to the fourth power of the pipe's radius. To test this idea, we'll show that …

Nov 29, 2025 · Poiseuille’s law is an important principle in fluid mechanics that describes how a viscous liquid flows through a long, narrow tube. It is used to calculate the rate of flow when the motion is …

The Hagen Poiseuille equation is defined as a fundamental equation in fluid mechanics that calculates the pressure drop of a Newtonian fluid flowing through a straight, circular channel under steady state, …

The poiseuille (symbol Pl) has been proposed as a derived SI unit of dynamic viscosity, named after the French physicist Jean Léonard Marie Poiseuille (1797–1869).

Poiseuille's law is used to describe the relationship between pressure, flow rate, and fluidic resistance. It is also used to calculate the pressure drop of a constant viscosity fluid.

The laminar flow through a pipe is described by the Hagen-Poiseuille law, stating that the flow rate (F = volume of fluid flowing per unit time) is proportional to the pressure difference D p between the ends …

Mar 24, 2025 · Who was Poiseuille and why is he important? Jean Léonard Marie Poiseuille was a French physicist and physiologist born in 1797. He is best known for his work on the flow of liquids …