| 单词 | poiseuille | 
| 释义 | Poiseuillen. Physics.  1.   Poiseuille's formula  n. 		(also Poiseuille formula)	 = Poiseuille's equation n. at sense  3. ΘΚΠ the world > matter > physics > mechanics > dynamics > fluid dynamics > 			[noun]		 > laminar flow > specific > relation or equation Poiseuille's formula1884 Poiseuille's law1884 Poiseuille's equation1906 1884    Philos. Trans. 1883 		(Royal Soc.)	 174 946  				The discharge from the pipes agreed exactly with those given by Poiseuille's formula for capillary tubes. 1906    Bot. Gaz. 42 152  				The flow of water through open vessels is in accord with Poiseuille's formula deduced from flow through rigid tubes. 1948    Proc. Royal Soc. A. 194 256  				It is of interest to re-examine the derivation of Poiseuille's formula for the steady flow of a quantum liquid in a capillary. 1997    Science 		(Nexis)	 4 Apr. 122  				The viscous resistance of a single tube is given by the well-known Poiseuille formula.  2.   Poiseuille's law  n. 		(also Poiseuille law)	 the law relating the volume of fluid flowing per second through a long narrow cylinder under conditions of Poiseuille flow, the viscosity of the fluid, and the dimensions of the cylinder, expressed by Poiseuille's equation. ΘΚΠ the world > matter > physics > mechanics > dynamics > fluid dynamics > 			[noun]		 > laminar flow > specific > relation or equation Poiseuille's formula1884 Poiseuille's law1884 Poiseuille's equation1906 1884    Philos. Trans. 1883 		(Royal Soc.)	 174 981  				With all the smaller tubes Poiseuille's law held throughout his experiments. 1915    Proc. Royal Soc. B. 89 135  				Solutions diffusing through copper ferrocyanide and other membranes obey Poiseuille's law. 1958    E. U. Condon  & H. Odishaw Handbk. Physics  v. vi. 78/1  				Viscous, laminar flow of gases through cylindrical tubes is governed by Poiseuille's law. 1975    Jrnl. Surg. Res. 19 26/1  				The resistance of varying degrees of obstruction placed within the circumflex coronary artery was determined by employing Poiseuille's Law. 2003    Chest 		(Nexis)	 1 Mar. 882  				Theoretical calculations for surface tension and surface age can be derived from algorithms based on the Poiseuille Law.  3.   Poiseuille's equation  n. 		(also Poiseuille equation)	 an equation expressing the relation between the volume V of fluid flowing per second through a long narrow cylinder under conditions of Poiseuille flow, the viscosity of the fluid, and the dimensions of the cylinder, namely V = πr4p/8ηl, where p is the difference in pressure between the ends of the cylinder, η is the viscosity of the fluid, l is the length of the cylinder, and r is its radius. ΘΚΠ the world > matter > physics > mechanics > dynamics > fluid dynamics > 			[noun]		 > laminar flow > specific > relation or equation Poiseuille's formula1884 Poiseuille's law1884 Poiseuille's equation1906 1906    Jrnl. Physical Chem. 10 674  				The movement of water through a capillary tube is accurately described by..an equation derivable from Poiseuille's equation by making the assumption that the acceleration is negligible in comparison with the velocity. 1931    G. Barr Monogr. Viscometry ii. 24  				Let the viscosity..calculated from an experiment by means of the uncorrected Poiseuille equation be denoted by η′. 1967    D. Margerison  & G. C. East Introd. Polymer Chem. ii. 103  				In these viscometers the time taken for the level of solvent or solution to pass between two fixed marks is determined and this is related to the viscosity by Poiseuille's equation. 1974    V. B. Mountcastle et al.  Med. Physiol. 		(ed. 13)	 II. xxxvi. 926/1  				The Womersley equations..relating oscillatory pressure and flow when both are expressed as Fourier series have the same general form as the Poiseuille equation. 2001    Brit. Plastics & Rubber 		(Nexis)	 1 Feb. 6  				The Poiseuille equations of flow require the wall velocity to be zero.  4.   Poiseuille flow  n. 		(also Poiseuille's flow)	 laminar or streamline flow of a viscous fluid of negligible compressibility, esp. through a long narrow cylinder. ΘΚΠ the world > matter > physics > mechanics > dynamics > fluid dynamics > 			[noun]		 > laminar flow > specific Poiseuille flow1936 1936    Chem. Rev. 18 415  				The vertical velocity has a parabolic distribution across the capillary in accordance with Poiseuille flow. 1946    Q. Appl. Math. 3 119  				The Poiseuille flow in a circular pipe was studied..with a conclusion of stability. 1974    V. B. Mountcastle et al.  Med. Physiol. 		(ed. 13)	 I. i. 11/2  				Osmotic water flows through pores in the same way that water flows through small tubes (Poiseuille's flow). 1992    New Scientist 25 Jan. 40/2  				Another kind of flow is a type of shear flow, called Poiseuille flow, when a fluid streams through a tube at a constant flow rate. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). <  | 
	
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