Online citations, reference lists, and bibliographies.
Please confirm you are human
(Sign Up for free to never see this)
← Back to Search

Two-component Bénard Convection: Interfacial Deformation, Oscillatory Instabilities And The Onset Of Turbulence

M. Velarde
Published 1983 · Materials Science

Save to my Library
Download PDF
Analyze on Scholarcy
Abstract Instabilities and convection in binary fluid mixtures (liquids with impurities, binary gas mixtures, etc.) have been the subject of intense research over the past decade. The major finding has been that mere ppm impurity concentration can play a drastic role in the stability of fluid layers subjected to thermal gradients. For layers open to ambient air the impurity cooperates or competes according to the sign of its migration in the thermal fields with the interfacial deformation thus leading to convective flows. For a layer enclosed between copper plates, say, the impurity can interplay with the slightest buoyancy or buoyancy variations in the environment thus amplifying this force and bringing instability under circumstances where with pure fluids no instability is expected. Recent predictions reported here refer to oscillatory instabilities with or without interfacial deformation and the onset of turbulence in the form of chaotic flows which correspond to irregular patterns with decaying correlations and broadband noise in their power spectra.
This paper references
Microgravity and the Thermoconvective Stability of a Binary Liquid Layer Open to the Ambient Air
J. Castillo (1980)
Thermal Diffusion and Convective Stability. II. An Analysis of the Convected Fluxes
M. Velarde (1972)
Thermal diffusion and the Marangoni-Benard instability of a two-component fluid layer heated from below
J. Castillo (1978)
On cellular convection driven by surface-tension gradients: effects of mean surface tension and surface viscosity
L. Scriven (1964)
Convective stability of incompressible fluids
G. Z. Gershuni (1976)
The Marangoni Effects
L. Scriven (1960)
Convective instability in a temperature and concentration field
C. Shir (1968)
On the /non linear/ foundations of Boussinesq approximation applicable to a thin layer of fluid
R. Cordon (1975)
Phase transition picture of the soret-driven convective instability in a two-component liquid layer heated from below
M. Velarde (1979)
Nonlinear periodic convection in double-diffusive systems
E. Knobloch (1981)
Strange Attractor (Optical Turbulence) in a Model Problem for the Laser with Saturable Absorber and the Two-Component Bénard Convection
M. Velarde (1981)
Bifurcations in a model of double-diffusive convection
E. Knobloch (1981)
Convective instability of a binary mixture, particularly in the neighborhood of the critical point: PMM vol. 35, n≗2, 1971, pp. 375–384
V. A. Shteinberg (1971)
Laser with saturable absorber and two-component benard convection: Limit cycle behaviour
M. Velarde (1980)
Oscillations in double-diffusive convection
L. Costa (1981)
Thermal diffusion and convective stability (III): A critical survey of Soret coefficient measurements
M. Velarde (1971)
Convective instability: A physicist's approach
C. Normand (1977)
Interfacial turbulence: Hydrodynamic instability and the marangoni effect
C. V. Sternling (1959)
Thermal oscillations in convecting fluids
D. Hurle (1973)
Nature of the Neutral State in Convective Instability Induced by Surface Tension and Buoyancy
M. Takashima (1970)
Soret-driven thermosolutal convection
D. Hurle (1971)
On the (non-linear) foundations of boussinesq approximation applicable to a thin layer of fluid. (II). viscous dissipation and large cell gap effects
M. Velarde (1976)
Energy stability theory for free-surface problems: buoyancy-thermocapillary layers
S. Davis (1980)

Semantic Scholar Logo Some data provided by SemanticScholar