What is the Hagen Poiseuille law in detail?
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.
What is Hagen Poiseuille equation used for?
Abstract. The Hagen-Poiseuille equation has been widely applied to the study of fluid feeding by insects that have sucking (haustellate) mouthparts.
Is Poiseuille French?
Poiseuille was born in Paris, France, and he died there on 26 December 1869….
| Jean Léonard Marie Poiseuille | |
|---|---|
| Born | 22 April 1797 Paris |
| Died | 26 December 1869 (aged 72) Paris |
| Nationality | French |
| Alma mater | École Polytechnique |
What is Poiseuille number?
Poiseuille number (Po) A non-dimensional number which characterizes steady, fully-developed, laminar flow of a constant-property fluid through a duct of arbitrary, but constant, cross section and defined by …
What is plane Poiseuille flow?
Plane Poiseuille flow is defined as a steady, laminar flow of a viscous fluid between two horizontal parallel plates separated by a distance, H.
Why is Poiseuille flow parabolic?
Velocity profile On the right hand side is the pressure gradient in axial direction and the viscosity of the fluid. Both quantities are not a function of the radius. Therefore, the derivative of the velocity profile is a linear function. The actual velocity profile is therefore parabolic!
What is poiseuille number?
What is the unit of viscosity?
The unit of viscosity is newton-second per square metre, which is usually expressed as pascal-second in SI units.
Is poiseuille SI unit of viscosity?
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). The equivalent cgs unit, the poise, symbol P, is most widely used when reporting viscosity measurements.
Who discovered Poiseuille’s law?
26, 1869, Paris), French physician and physiologist who formulated a mathematical expression for the flow rate for the laminar (nonturbulent) flow of fluids in circular tubes. Discovered independently by Gotthilf Hagen, a German hydraulic engineer, this relation is also known as the Hagen-Poiseuille equation.
Is Poiseuille a SI unit?
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).