Equilibrium transport in double-diiffusive convection
Smith, D. Paul Smith
MetadataShow full item record
A theoretical model for the equilibrium double-diffusive transport is presented which emphasizes the role of secondary instabilities of salt fingers in saturation of their linear growth. Theory assumes that the fully developed equilibrium state is characterized by the comparable growth rates of primary and secondary instabilities. This assumption makes it possible to formulate an efficient algorithm for computing diffusivities of heat and salt as a function of the background property gradients and molecular parameters. The model predicts that the double-diffusive transport of heat and salt rapidly intensifies with decreasing density ratio. Fluxes are less sensitive to molecular characteristics, mildly increasing with Prandtl number .Pr/ and decreasing with diffusivity ratio . /. Theory is successfully tested by a series of direct numerical simulations which span a wide range of Pr and .
The article of record as published may be found at http://dx.doi.org/10.1017/jfm.2011.343
Showing items related by title, author, creator and subject.
Gille, Sarah T.; Stevens, David P.; Tokmakian, Robin T.; Heywood, Karen J. (2001-02);Coherence analysis techniques are used to compare Southern Ocean wind forcing with Antarctic Circumpolar Current transport. Winds are derived from five different products: ERS winds that have been bin-averaged, weekly ...
Lazaris, Konstantinos A. (Monterey, California. Naval Postgraduate School, 1994-03);The development and advances in fiber optic technology are leading to major changes in modem telecommunication systems. In short, the transmission of data through optical fiber has become so ...
A Numerical Study of the Response of an Idealized Ocean to Large-Scale Surface Heat and Momentum Flux Haney, Robert L. (1974-04);A numerical model of a 6-level, baroclinic ocean with a fiat bottom and a regular coast line extending from 51.25S to 48.75N is integrated over 125 years of simulated time using a finite-difference analog of the primitive ...