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Jean Léonard Marie Poiseuille[a] (French: [pwazœj]; 22 April 1797[1] – 26 December 1869) was a French physicist and physiologist. Poiseuille was born in Paris, France, and he died there on 26 December 1869.

Contents

1 Fluid flow 2 Notes 3 References 4 Further reading

Fluid flow[edit] From 1815 to 1816 he studied at the École Polytechnique
École Polytechnique
in Paris. He was trained in physics and mathematics. In 1828 he earned his D.Sc. degree with a dissertation entitled Recherches sur la force du coeur aortique. He was interested in the flow of human blood in narrow tubes. In 1838 he experimentally derived, and in 1840 and 1846 formulated and published, Poiseuille's law
Poiseuille's law
(now commonly known as the Hagen–Poiseuille equation, crediting Gotthilf Hagen
Gotthilf Hagen
as well), which applies to laminar flow, that is, non-turbulent flow of liquids through pipes of uniform section, such as blood flow in capillaries and veins. The equation in standard fluid dynamics notation is[2][3]

Δ P =

8 μ L Q

π

r

4

,

displaystyle Delta P= frac 8mu LQ pi r^ 4 ,

or

Δ P =

128 μ L Q

π

d

4

,

displaystyle Delta P= frac 128mu LQ pi d^ 4 ,

or

Δ P =

32 μ L v

d

2

,

displaystyle Delta P= frac 32mu Lv d^ 2 ,

where:

Δ P

displaystyle Delta P

is the pressure loss,

L

displaystyle L

is the length of pipe,

μ

displaystyle mu

is the dynamic viscosity,

Q

displaystyle Q

is the volumetric flow rate,

r

displaystyle r

is the radius,

d

displaystyle d

is the diameter,

π

displaystyle pi

is the mathematical constant π,

v

displaystyle v

is the velocity.

The poise, the unit of viscosity in the CGS system, was named after him. Attempts to introduce "poiseuille" as the name of the SI unit Pa·s had little success.[citation needed] Notes[edit]

^ Some sources (including editions of Encyclopædia Britannica
Encyclopædia Britannica
from at least 1911) give Poiseuille's full name as Jean Louis Marie Poiseuille. This appears to be a mistake, propagated from Larousse's Grand dictionnaire universel du XIXe siècle, vol 12, p. 1271 (1874)

References[edit]

^ "ANCIENS ELEVES WEB - Notice complète". bibli-aleph.polytechnique.fr. Retrieved 2016-08-23.  ^ Kirby, B. J. (2010). Micro- and Nanoscale Fluid Mechanics: Transport in Microfluidic Devices. Cambridge University Press. ISBN 978-0-521-11903-0.  ^ Bruus, H. (2007). Theoretical Microfluidics. 

Further reading[edit]

Brillouin, Marcel (1930). "Jean Leonard Marie Poiseuille". Journal of Rheology. 1: 345. Bibcode:1930JRheo...1..345B. doi:10.1122/1.2116329.  Pfitzner, J. (1976), "Poiseuille and his law", Anaesthesia (published Mar 1976), 31 (2), pp. 273–5, doi:10.1111/j.1365-2044.1976.tb11804.x, PMID 779509  (Subscription required) Sutera, Salvatore P.; Skalak, Richard (1993). "The History of Poiseuille's Law". Annual Review of Fluid Mechanics. 25: 1–19. Bibcode:1993AnRFM..25....1S. doi:10.1146/annurev.fl.25.010193.000245. 

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Scientists whose names are used as non SI units

Anders Jonas Ångström Alexander Graham Bell Marie Curie Pierre Curie John Dalton Peter Debye Loránd Eötvös Daniel Gabriel Fahrenheit Galileo Galilei Johann Carl Friedrich Gauss William Gilbert Heinrich Kayser Johann Heinrich Lambert Samuel Pierpont Langley Heinrich Mache James Clerk Maxwell John Napier Hans Christian Ørsted Jean Léonard Marie Poiseuille William John Macquorn Rankine René Antoine Ferchault de Réaumur Wilhelm Röntgen Sir George Stokes, 1st Baronet John Strutt, 3rd Baron Rayleigh Joseph John Thomson Evangelista Torricelli

Scientists whose names are used as SI units Scientists whose names are used in chemical element names Scientists whose names are used in physical constants

Authority control

WorldCat Identities VIAF: 46751956 LCCN: n98802356 ISNI: 0000 0000 3361 6996 GND: 118792660 SUDOC: 075885522 BNF: cb10693841k (da

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