Reynolds number

Reynolds number
   A numerical quantity used as an index to characterize the type of flow in a hydraulic structure in which resistance to motion depends on the viscosity of the liquid in conjunction with the resisting force of inertia. It is the ratio of inertia forces to viscous forces, and is equal to the product of a characteristic velocity of the system (e.g. the mean, surface, or maximum velocity) and a characteristic linear dimension, such as diameter or depth, divided by the kinematic viscosity of the liquid; all expressed in consistent units in order that the combinations will be dimensionless. The number is chiefly applicable to closed systems of flow, such as pipes or conduits where there is a free water surface, or to bodies fully immersed in the fluid so the free surface need not be considered [1].

A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology. . 2002.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Reynolds number — n. 〚after O. Reynolds (1842 1912), Eng physicist〛 a dimensionless parameter used to determine the nature of fluid flow along surfaces and around objects, as in a wind tunnel * * * In fluid mechanics, a number that indicates whether the flow of a… …   Universalium

  • Reynolds number — n. [after O. Reynolds (1842 1912), Eng physicist] a dimensionless parameter used to determine the nature of fluid flow along surfaces and around objects, as in a wind tunnel …   English World dictionary

  • Reynolds number — In fluid mechanics and heat transfer, the Reynolds number mathrm{Re} is a dimensionless number that gives a measure of the ratio of inertial forces ({old mathrm V} ho) to viscous forces (mu / L) and, consequently, it quantifies the relative… …   Wikipedia

  • Reynolds number — A dimensionless number that establishes the proportionality between the fluid inertia and the sheer stress as a result of viscosity. The work of Osborne Reynolds has shown that the flow profile of fluid in a closed circuit depends upon the… …   Aviation dictionary

  • reynolds number — n. Physics a quantity indicating the degree of turbulence of flow past an obstacle etc. Etymology: O. Reynolds, Engl. physicist d. 1912 * * * ˈrenəldz noun Usage: usually capitalized R Etymology: after Osborne Reynolds died 1912 English physicist …   Useful english dictionary

  • Reynolds number — /ˈrɛnəldz nʌmbə/ (say renuhldz numbuh) noun a dimensionless number which determines whether the fluid flow in a particular situation will be streamline or turbulent. It is important in hydrodynamics and aeronautics since models with the same… …  

  • Reynolds number — Reinoldso skaičius statusas T sritis fizika atitikmenys: angl. Reynolds number vok. Reynolds Zahl, f rus. число Рейнольдса, n pranc. nombre de Reynolds, m …   Fizikos terminų žodynas

  • Reynolds number — Reinoldso skaičius statusas T sritis Energetika apibrėžtis Apibrėžtį žr. priede. priedas( ai) MS Word formatas atitikmenys: angl. Reynolds number vok. Reynolds Zahl, f rus. Рейнольдса число, n pranc. nombre de Reynolds, m …   Aiškinamasis šiluminės ir branduolinės technikos terminų žodynas

  • Reynolds number — Reinoldso skaičius statusas T sritis Standartizacija ir metrologija apibrėžtis Apibrėžtį žr. priede. priedas( ai) Grafinis formatas atitikmenys: angl. Reynolds number vok. Reynoldssche Zahl, f; Reynoldszahl, f rus. число Рейнольдса, n pranc.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • Reynolds number — noun a dimensionless parameter that determines the behavior of viscous flow patterns. In pipe flow a value less than about 2,000 (known as the critical Reynolds number) produces laminar flow, one above about 3,000 produces turbulent flow… …   Wiktionary

  • Reynolds number — Reinoldso skaičius statusas T sritis chemija apibrėžtis Skysčio arba dujų inercijos ir klampos jėgų santykis. atitikmenys: angl. Reynolds number rus. критерий Рейнольдса; число Рейнольдса ryšiai: sinonimas – Reinoldso kriterijus …   Chemijos terminų aiškinamasis žodynas

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”