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Gravity current

In fluid dynamics, a gravity current or density current is a primarily horizontal flow in a gravitational field that is driven by a density difference in a fluid or fluids and is constrained to flow horizontally by, for instance, a ceiling. Typically, the density difference is small enough for the Boussinesq approximation to be valid. Gravity currents…

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Overview

Fluid dynamicsGravitational fieldDensityBoussinesq approximationPyroclastic flow
17 related topics

Structure and propagation

FluidFroudeReynoldsViscosityKelvin-Helmholtz instabilities
5 related topics

In nature and the built environment

LaharsLavaMach number
3 related topics

Modelling approaches

Conservation of massReduced gravity
2 related topics

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Overview

Structure and propagation

Research

In nature and the built environment

Modelling approaches

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Map overview Semantic statistics

Gravity current

Nodes34
Edges33
Triples50
Avg. degree1.94
Density0.058824
Components1

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Gravity current

Top relations

related to Research · 17
Gravity current → Abbot, Annual Review, Applied Mathematics, Barr, Benjamin, Benjamin's, Cambridge University, Department, Ellison, Fluid Mechanics, He, Observations, Simpson, The, Theoretical Physics, Tuner, UK
related to Structure and propagation · 15
Gravity current → According, Although, As, Direct, Finally, Flow, For, From, Froude, Gravity, In, Kelvin-Helmholtz, Propagation, Reynolds, The
related to In nature and the built environment · 10
Gravity current → An, Doorway, Examples, For, Gravity, In, Mach, There, These, This
related to Box models · 5
Gravity current → For, Fr, Froude, Here, The
is a · 1
Gravity current → heavy gas dispersion in the atmosphere with initial ratio of gas density to density of atmosphere between about 1.5 and 5.Gravity currents are frequently encountered in the buil…
related to External links · 1
Gravity current → Video

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Important terminology

gravity current flow currents fluid flows propagation density froude head case number volume leading edge phase constant width obstacle along

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Gravity currentis aheavy gas dispersion in the atmosphere with initial ratio of gas density to density of atmosphere between about 1.5 and 5.Gravity currents are frequently encountered in the buil…0.90text
through sedimentationinstance ofwhere the Froude number at the front is constant and the shape of the current has a nearly constant height.Additional equations can be specified for processes that would alter t…0.80text
Gravity currentrelated to Box modelsFor0.60section
Gravity currentrelated to Box modelsThe0.60section
Gravity currentrelated to Box modelsHere0.60section
Gravity currentrelated to Box modelsFroude0.60section
Gravity currentrelated to Box modelsFr0.60section
Gravity currentrelated to External linksVideo0.60section
Gravity currentrelated to In nature and the built environmentGravity0.60section
Gravity currentrelated to In nature and the built environmentFor0.60section
Gravity currentrelated to In nature and the built environmentExamples0.60section
Gravity currentrelated to In nature and the built environmentThere0.60section

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