Collective instability of salt fingers

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August undefined, 2024

WebMar 1, 2003 · If salt is the destabilizing component (warmer saltier water overlying cooler fresher), the instability takes the form of tightly packed blobs of sinking salty and rising … Webadshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A

Numerical experiments on salt-finger convection - ScienceDirect

WebJun 4, 1998 · The possible existence of equilibrium salt fingering in a deep fingering domain, equivalent to large Rayleigh number fingering convection, is investigated with a numerical model of a continuously heat and salt stratified fluid system. The growth of fingering heat and salt fluxes in this system is shown to be limited by the instability of … WebJan 1, 2016 · Conference Paper hselearning.sriramachandra.edu.in

The Contribution of Salt Fingers to Vertical Mixing in the …

WebApr 20, 2024 · Double-diffusive flux-gradient laws are commonly used to describe the development of large-scale structures driven by salt fingers – thermohaline staircases, collective instability waves and ... WebThe effect of non-uniform basic concentration gradient on the onset of double diffusive convection in a micropolar fluid layer heated and saluted from below and cooled from above has been studied. The linear stability analysis is performed. The eigen value of the problem is obtained using Galerkian method. The eigen values are obtained for 1) free-free 2) … WebThe fingers, 6 millimeters in diameter and 24 centimeters long, were photographed below the salinity maximum of the outflow, in an interface 22 centimeters thick where … ava14-2421-to

On the relationship between finger width, velocity, and fluxes in ...

Time Dependent and Rotational Effects in Salt Finger Convection

WebCollective instability of salt fingers By MELVIN E. STERN Graduate School of Oceanography, University of Rhode Island (Received 22 April 1968 and in revised … WebJan 1, 1995 · The "collective instability" mechanism could be responsible for this phenomena "split", because the layer splitting occurred when the Stern Number is much greater than order 1. ... a salt finger ... hsem meaningWebA necessary condition for the collective instability (Stern et al. 2001) is that the Stern number A should be larger than an order one factor. As seen in Figure 1c this condition is satisfied only ... hselearning sriramachandra.edu.in

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Collective instability of salt fingers

Salt-fingering convection in the small diffusivity ratio limit

WebRead NowDownload PDF. Journal of Marine Research, 69, 57–77, 2011 Secondary instability of salt sheets by Satoshi Kimura1,2 and William Smyth1 ABSTRACT In the presence of a vertically varying horizontal current (background shear), the salt-fingering instability is supplanted by the salt-sheet instability. WebJul 1, 1999 · The density ratio R ρ = (αΘ z)(βS z) −1 is the parameter that dictates a system’s susceptibility to double-diffusive instability. The salt-finger instability is …

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WebSalt fingering is a mixing process, example of double diffusive instability, that occurs when relatively warm, salty water overlies relatively colder, fresher water. It is driven by the fact … WebSep 1, 2001 · This paper presents a state of art review of the diffusion induced hydrodynamic processes. The conservation equations are derived by making use of Onsager’s reciprocity relations and basic solutions are presented for the binary and ternary fluid systems. The instability caused by the cross diffusion terms is analyzed in a binary …

WebMar 1, 2003 · On the collective instability of salt fingers. Journal of Fluid Mechanics (1981) J.Y. Holyer The stability of long, steady, two-dimensional salt fingers. ... Subsequently, the instability evolution process of salt finger-type of double diffusive convection in porous media is investigated, with a focus on the structure and behavior of … WebJun 25, 2005 · This motion appears to be related to the secondary instability found in unsheared, unbounded, salt fingers (Holyer, 1984;Stern and Simeonov, 2005). [Both …

WebFeb 4, 2009 · The width of the incipient fingers at the time of onset of instability has been shown to vary as Ra T − 1 ∕ 3. Velocity in the finger varies as Ra T 1 ∕ 3 ∕ R ρ . Results from simulation agree with the scale analysis presented in the paper. Webas well as make more detailed tests of the models of the collective instability of fingers (Stern, 1969) and the 4/ 3-power law for the salt flux (Stern, 1976), I have undertaken a series of heat-salt fingering experiments. ... 1979] Schmitt: Salt finger fiux measurements 421 layers before and after each fingering period, 4 to 9 minutes long ...

WebSep 2, 1998 · The significance of ‘‘collective’’ instability in determining this transition is not substantiated by the simulation for the parameter values studied here. ... as derived in …

WebDec 1, 2002 · Double-diffusive flux-gradient laws are commonly used to describe the development of large-scale structures driven by salt fingers – thermohaline staircases, … ava17-1721kWebOct 25, 2024 · This collective instability of salt fingers succeeds in transferring energy from the small salt finger scales to the long internal wave scales. View. Show abstract. ava1800WebJun 17, 2024 · Here we investigate DDC and thermohaline staircases in the salt finger regime, which happens when warm saltier water lies above cold fresher water and is commonly observed in the (sub)tropic regions. ... Collective instability of salt fingers. J. Fluid Mech. 35, 209–218 (1969). Crossref. Google Scholar. 25. M. Stern, T. Radko, J. … hsem trainingWebThis nondimensional collective instability criterion for the magnitude of the finger fluxes has come to be known as the Stern number. More rigorously, Holyer (1981) demonstrated secondary instability of steady fingers to … ava2WebMar 1, 2003 · However, the stability of salt-fingers is itself not yet fully understood. Since Stern (1969) proposed a collective instability theory, salt-finger instability has been investigated in various contexts (Holyer, 1981, Veronis, 1987, Howard and Veronis, 1987). The Stern number criterion seems to be sufficient to. Acknowledgments hsema training calendarWebJun 17, 2024 · Here we investigate DDC and thermohaline staircases in the salt finger regime, which happens when warm saltier water lies above cold fresher water and is … ava2 uemanetWebJul 1, 1999 · The density ratio R ρ = (αΘ z)(βS z) −1 is the parameter that dictates a system’s susceptibility to double-diffusive instability. The salt-finger instability is permitted if 1 < R ... Stern, M. E., 1969: Collective instability of salt fingers. J. Fluid Mech.,35, 209–218. ——, 1975: Ocean Circulation Physics. Academic Press, 246 pp. hsema training academy