Open AccessJournal Article
Gravity currents in two-layer stratified media
A.W. Tan,Morris Flynn +1 more
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This article is published in Bulletin of the American Physical Society.The article was published on 2010-11-23 and is currently open access. It has received 13 citations till now. The article focuses on the topics: Gravity (chemistry).read more
Citations
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A general description of a gravity current front propagating in a two-layer stratified fluid
Brian White,Karl R. Helfrich +1 more
TL;DR: In this article, the authors describe the behavior of a gravity current propagating into a two-layer stratified ambient fluid, with particular emphasis on the front condition linking the thickness of the gravity current to its speed of propagation and the transfer of energy to upstream disturbances.
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LES of lock-exchange compositional gravity currents: a brief review of some recent results
TL;DR: In this paper, a 3D Large Eddy Simulation (LES) of bottom-propagating compositional Boussinesq currents in lock-exchange configurations was used to provide a detailed description of the structure of the current, to discuss the role of the large-scale coherent structures, and to predict the evolution of the front velocity over the different stages of current propagation.
Journal Article
Generation of internal solitary waves by frontally forced intrusions in geophysical flows
TL;DR: In this paper, the authors reported a rarely observed natural case of the birth of internal solitary waves from a frontally forced interfacial gravity current intruding into a two-layer and vertically sheared background environment.
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Gravity currents in a two-layer stratified ambient: The theory for the steady-state (front condition) and lock-released flows, and experimental confirmations
TL;DR: In this paper, the authors considered the propagation of a gravity current of density ρc at the bottom of a two-layer stratified ambient in a horizontal channel of height H, in the high-Reynolds number Boussinesq domain.
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Gravity currents propagating into ambients with arbitrary shear and density stratification: vorticity-based modelling
TL;DR: In this paper, a vorticity-based approach for modeling quasi-steady, supercritical gravity currents propagating into a finite-height channel with arbitrary density and velocity stratification is presented.
References
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Gravity currents and related phenomena
TL;DR: In this paper, the authors present a broad investigation into the properties of steady gravity currents, in so far as they can be represented by perfect-fluid theory and simple extensions of it (like the classical theory of hydraulic jumps) that give a rudimentary account of dissipation.
Book
Topographic Effects in Stratified Flows
TL;DR: In this paper, the authors present a model of two-layer flows over two-dimensional obstacles and a three-dimensional topography with a free surface, and apply it to practical modelling of flow over complex terrain.
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Analysis and direct numerical simulation of the flow at a gravity-current head. Part 1. Flow topology and front speed for slip and no-slip boundaries
TL;DR: In this paper, a detailed analysis of the flow structure at the foremost part of the front, where no previous high-resolution data were available, was performed, based on spectral and spectral-element discretizations and compact finite differences.
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Gravity currents produced by instantaneous releases of a heavy fluid in a rectangular channel
James W. Rottman,J. E. Simpson +1 more
TL;DR: In this paper, a finite volume of homogeneous fluid was released instantaneously into another fluid of slightly lower density and the experiments were performed in a channel of rectangular cross-section, and the two fluids used were salt water and fresh water.