A numerical study of layer formation due to fingers in double-diffusive convection in a vertically-bounded domain

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ID: 302709
1998
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Abstract
The evolution of e ngers in a double-diffusive system is investigated using numerical integration of two-dimensional equations of motion for an incompressible, Boussinesq e uid. The computational domain is periodic in the horizontal direction and is closed with no-e ux boundary conditions in the vertical direction. The main result of this study is the evolution of the system from initially linear proe les for both fast and slow diffusing components to a layered state characterized by a e nger zone sandwiched between two mixed layers. The horizontal boundaries in this system play an important role in the development of the layered state.At the top and bottom boundaries, light and heavy e nger e uxes accumulate leading to the formation of mixed layers exhibiting larger-scale eddies. In the quasi-equilibrium state, the e nger zone is characterized by broken wiggly e ngers which do not extend across the entire interface. The salinity e ux at the mid-depth of the domain is approximately proportional to the 4 A3 power of the salinity difference between the mixed layers, except for the initial phase and for the run-down phase.
Reference Key
openalex_W2167644531 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Tamay M. Özgökmen, Oleg E. Esenkov, Donald B. Olson
Journal journal of marine research
Year 1998
DOI
10.1357/002224098321822384
URL
https://doi.org/10.1357/002224098321822384
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