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About: Turbulence is a(n) research topic. Over the lifetime, 112103 publication(s) have been published within this topic receiving 2768011 citation(s). The topic is also known as: fluid turbulence & turbulent flow. more


Open accessBook
01 Jan 1955-
Abstract: The flow laws of the actual flows at high Reynolds numbers differ considerably from those of the laminar flows treated in the preceding part. These actual flows show a special characteristic, denoted as turbulence. The character of a turbulent flow is most easily understood the case of the pipe flow. Consider the flow through a straight pipe of circular cross section and with a smooth wall. For laminar flow each fluid particle moves with uniform velocity along a rectilinear path. Because of viscosity, the velocity of the particles near the wall is smaller than that of the particles at the center. i% order to maintain the motion, a pressure decrease is required which, for laminar flow, is proportional to the first power of the mean flow velocity. Actually, however, one ob~erves that, for larger Reynolds numbers, the pressure drop increases almost with the square of the velocity and is very much larger then that given by the Hagen Poiseuille law. One may conclude that the actual flow is very different from that of the Poiseuille flow. more

Topics: Laminar flow (71%), Turbulence (69%), Pipe flow (67%) more

17,189 Citations

Open accessJournal ArticleDOI: 10.2514/3.12149
Florian R. Menter1Institutions (1)
01 Aug 1994-AIAA Journal
Abstract: Two new two-equation eddy-viscosity turbulence models will be presented. They combine different elements of existing models that are considered superior to their alternatives. The first model, referred to as the baseline (BSL) model, utilizes the original k-ω model of Wilcox in the inner region of the boundary layer and switches to the standard k-e model in the outer region and in free shear flows. It has a performance similar to the Wilcox model, but avoids that model's strong freestream sensitivity more

12,746 Citations

Journal ArticleDOI: 10.1016/0045-7825(74)90029-2
Brian Launder1, D. B. Spalding1Institutions (1)
Abstract: The paper reviews the problem of making numerical predictions of turbulent flow. It advocates that computational economy, range of applicability and physical realism are best served at present by turbulence models in which the magnitudes of two turbulence quantities, the turbulence kinetic energy k and its dissipation rate ϵ, are calculated from transport equations solved simultaneously with those governing the mean flow behaviour. The width of applicability of the model is demonstrated by reference to numerical computations of nine substantially different kinds of turbulent flow. more

10,988 Citations

Proceedings ArticleDOI: 10.2514/6.1992-439
Philippe R. Spalart1, S. Allmaras1Institutions (1)
06 Jan 1992-
Topics: K-epsilon turbulence model (83%), K-omega turbulence model (81%), Turbulence modeling (73%) more

8,256 Citations

Open accessBook
01 Jan 1972-
Abstract: Keywords: turbulence ; transport ; contraintes ; transport ; couche : limite ; ecoulement ; tourbillon ; energie Reference Record created on 2005-11-18, modified on 2016-08-08 more

Topics: K-epsilon turbulence model (66%), Turbulence (51%)

7,966 Citations

No. of papers in the topic in previous years

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Topic's top 5 most impactful authors

R. A. Antonia

266 papers, 10.7K citations

Patrick Diamond

183 papers, 7.3K citations

Parviz Moin

181 papers, 30K citations

Detlef Lohse

162 papers, 6K citations

Ivan Marusic

157 papers, 8.1K citations

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