Question

define poiselluis
formula​

Answer 1

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In nonideal 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 Newtonian fluid in laminar flow flowing through a long cylindrical pipe of constant cross section.

Poiseuille's Law. The flow of fluids through an IV catheter can be described by Poiseuille's Law. It states that the flow (Q) of fluid is related to a number of factors: the viscosity (n) of the fluid, the pressure gradient across the tubing (P), and the length (L) and diameter(r) of the tubing.

\Delta p = pressure difference between the two ends

\mu = dynamic viscosity

L = length of pipe

Q = volumetric flow rate

\pi = pi

R = pipe radius