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. It can be successfully applied to air flow in lung alveoli , or the flow through a drinking straw or through a hypodermic needle. The assumptions of the equation are that the fluid is incompressible and Newtonian ; the flow is laminar through a pipe of constant circular cross-section that is substantially longer than its diameter; and there is no acceleration of fluid in the pipe. For velocities and pipe diameters above a threshold, actual fluid flow is not laminar but turbulent , leading to larger pressure drops than calculated by the Hagen—Poiseuille equation. Poiseuille's Equation describes the pressure drop due to the viscosity of the fluid; Other types of pressure drops may still occur in a fluid see a demonstration here [4]. For example, the pressure needed to drive a viscous fluid up against gravity would contain both that as needed in Poiseuille's Law plus that as needed in Bernoulli's equation , such that any point in the flow would have a pressure greater than zero otherwise no flow would happen.

Author:Shakami Dole
Country:El Salvador
Language:English (Spanish)
Published (Last):8 June 2006
PDF File Size:20.40 Mb
ePub File Size:2.44 Mb
Price:Free* [*Free Regsitration Required]

JavaScript seems to be disabled in your browser. You must have JavaScript enabled in your browser to utilize the functionality of this website. This product is classified as a dangerous good and is not available for online purchase. For ordering the dangerous good or other information please contact our customer service center.

These are not available for online purchase. Email: webshopuk ld-didactic. For a Newtonian liquid i. Auf www. Preisanzeige und Bestellungen mit einer Lieferadresse in Deutschland sind auf www. Forgot password?

Cart 0. Search: Search. Document Center Catalogues Software. Mechanics Measuring methods Forces Translational motions of a mass point Rotational motions of a rigid body Oscillations Wave mechanics Acoustics Aero- and hydrodynamics Bouyancy Viscosity Assembling a falling-ball viscosimeter to determine the viscosity of viscous fluids Falling-ball viscosimeter: measuring the viscosity of sugar solutions as a function of the concentration Falling-ball viscosimeter: measuring the viscosity of Newtonian liquids as a function of the termperature Hagen-Poiseuille Law Surface tension Introductory experiments on aerodynamics Measuring air resistance Measurements in a wind tunnel.

Hagen-Poiseuille Law VP1. Hagen-Poiseuille Law. Add to product list. Thank you for your inquiry. We will get back to you as soon as possible. Description For a Newtonian liquid i. Technology Automotive Electrical Engineering. For the address of your local distributor, please contact us per email: sales ld-didactic. For European distributors, please visit: European distributors.

Click here for our contact form and postal address. Capillary tube, mm x 5 mm, 0. Capillary tube, mm x 8 mm, 2 mm diam. Capillary tube. Holder for plug-in elements. Small clip plug. Stopwatch, digital. Stirring thermometer Metal rule, 1 m. Discharge vessel. Measuring cylinder 25 ml, with plastic base. Mohr clip, 50 mm. Connector, straight, Silicone tubing, 4 mm diam. Stand base, V-shaped, large. Stand rod, cm, 12 mm diam. Bosshead S.

Storage tray S8-FN. Water, pure, 1 l.


Hagen-Poiseuille Law



Hagen–Poiseuille equation






Related Articles