Convective Instability in a Fluid Mixture Heated from Above

1998 ◽  
Vol 80 (17) ◽  
pp. 3759-3762 ◽  
Author(s):  
A. La Porta ◽  
C. M. Surko
Keyword(s):  
Convective Instability ◽  
Fluid Mixture

Amplitude equation near a polycritical point for the convective instability of a binary fluid mixture in a porous medium

1983 ◽  
Vol 27 (1) ◽  
pp. 591-593 ◽  
Author(s):  
Helmut R. Brand ◽  
Pierre C. Hohenberg ◽  
Victor Steinberg
Keyword(s):  
Porous Medium ◽  
Convective Instability ◽  
Amplitude Equation ◽  
Fluid Mixture ◽  
Binary Fluid

Activated Prominences; Mechanisms for Activation and Eruption

1979 ◽  
Vol 44 ◽  
pp. 307-313
Author(s):  
D.S. Spicer
Keyword(s):  
Pressure Gradient ◽  
Density Gradient ◽  
Current Density ◽  
Convective Instability ◽  
Tearing Mode ◽  
Magnetic Shear ◽  
Long Wavelength ◽  
Ideal Mhd ◽  
Gradient Change ◽  
Accelerated Particles

A possible relationship between the hot prominence transition sheath, increased internal turbulent and/or helical motion prior to prominence eruption and the prominence eruption (“disparition brusque”) is discussed. The associated darkening of the filament or brightening of the prominence is interpreted as a change in the prominence’s internal pressure gradient which, if of the correct sign, can lead to short wavelength turbulent convection within the prominence. Associated with such a pressure gradient change may be the alteration of the current density gradient within the prominence. Such a change in the current density gradient may also be due to the relative motion of the neighbouring plages thereby increasing the magnetic shear within the prominence, i.e., steepening the current density gradient. Depending on the magnitude of the current density gradient, i.e., magnetic shear, disruption of the prominence can occur by either a long wavelength ideal MHD helical (“kink”) convective instability and/or a long wavelength resistive helical (“kink”) convective instability (tearing mode). The long wavelength ideal MHD helical instability will lead to helical rotation and thus unwinding due to diamagnetic effects and plasma ejections due to convection. The long wavelength resistive helical instability will lead to both unwinding and plasma ejections, but also to accelerated plasma flow, long wavelength magnetic field filamentation, accelerated particles and long wavelength heating internal to the prominence.

The absolute and convective instability of the magnetospheric flanks

2000 ◽  
Vol 105 (A1) ◽  
pp. 385-394
Author(s):  
Andrew N. Wright
Keyword(s):  
Convective Instability ◽  
The Absolute

Study of forced rayleigh light scattering by a fluid mixture with chemical reaction

1980 ◽  
Vol 77 ◽  
pp. 881-888 ◽  
Author(s):  
Catherine Allain ◽  
Pierre Lallemand
Keyword(s):  
Light Scattering ◽  
Chemical Reaction ◽  
Fluid Mixture ◽  
Rayleigh Light Scattering ◽  
Rayleigh Light

CONVECTIVE INSTABILITY IN CRYSTAL GROWTH SYSTEM

2002 ◽  
Vol 12 (12) ◽  
pp. 187-221 ◽  
Author(s):  
Koichi Kakimoto ◽  
Nobuyuki Imaishi
Keyword(s):  
Crystal Growth ◽  
Convective Instability ◽  
Growth System

ABSOLUTE AND CONVECTIVE INSTABILITY OF A CONFINED SWIRLING ANNULAR LIQUID LAYER

2014 ◽  
Vol 24 (7) ◽  
pp. 555-573 ◽  
Author(s):  
Qing-Fei Fu ◽  
Li-Jun Yang ◽  
Ming-xi Tong ◽  
Chen Wang
Keyword(s):  
Liquid Layer ◽  
Convective Instability

Critical consolute point in hard-sphere binary mixtures: Effect of the value of the eighth and higher virial coefficients on its location

2010 ◽  
Vol 75 (3) ◽  
pp. 359-369 ◽  
Author(s):  
Mariano López De Haro ◽  
Anatol Malijevský ◽  
Stanislav Labík
Keyword(s):  
Equation Of State ◽  
Binary Mixtures ◽  
Hard Sphere ◽  
Hard Spheres ◽  
Virial Coefficients ◽  
Fluid Mixture ◽  
Binary Fluid ◽  
Virial Series ◽  
Consolute Point ◽  
Critical Constants

Various truncations for the virial series of a binary fluid mixture of additive hard spheres are used to analyze the location of the critical consolute point of this system for different size asymmetries. The effect of uncertainties in the values of the eighth virial coefficients on the resulting critical constants is assessed. It is also shown that a replacement of the exact virial coefficients in lieu of the corresponding coefficients in the virial expansion of the analytical Boublík–Mansoori–Carnahan–Starling–Leland equation of state, which still leads to an analytical equation of state, may lead to a critical consolute point in the system.

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