Results 191 to 200 of about 10,013 (243)
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Nature, 1952
ALTHOUGH thermal diffusion in condensed systems has been used experimentally for bringing about difficult separations, for example, in the Clusius and Dickel apparatus, and although considerable advances have been made recently in the descriptive treatment of the effect by Prof. S. R. de Groot1 at Utrecht and Prof.
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ALTHOUGH thermal diffusion in condensed systems has been used experimentally for bringing about difficult separations, for example, in the Clusius and Dickel apparatus, and although considerable advances have been made recently in the descriptive treatment of the effect by Prof. S. R. de Groot1 at Utrecht and Prof.
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Self focusing induced by Soret effect
Optics Communications, 1990no ...
Freysz, E. +3 more
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Soret effect in molecular mixtures
Physical Review E, 2009A theoretical approach to the description of the Soret effect in binary nonpolar liquids is proposed. The temperature gradient of the partial pressure is determined as the driving force of thermal diffusion. The hard-sphere fluid is chosen as a reference system and an explicit relation for the Soret coefficient is found.
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The Ludwig–Soret effect and stochastic processes
The Journal of Chemical Thermodynamics, 2011Abstract New general stochastic models of thermodiffusion are proposed, which include velocity-dependent friction coefficient and noise tensor. These coefficients are computed exactly from the Boltzmann equation for the particular case of thermodiffusion in dilute gas mixtures.
Debbasch, F., Rivet, J.P.
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Superseparation: Soret Effect Reversed
Separation Science and Technology, 1980Abstract The Soret effect is attributable primarily to the fact that osmotic pressure IS the same across a solution when heating one side and cooling the other. When Whatman #40 filter paper was interspersed throughout an aqueous solution to minimize disturbance of the Soret effect caused by convection, the Soret effect was reversed.
H. T. Hammel, J. E. Maggert
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Role of mixing thermodynamic properties on the Soret effect
The Journal of Chemical Physics, 2022We demonstrate that the modified Kempers model, a recently developed theoretical model for the Soret effect in oxide melts, is applicable for predicting the composition dependence of the Soret coefficient in three binary molecular liquids with negative enthalpies of mixing.
Tomohiro Kiyosawa +7 more
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Journal of Physics and Chemistry of Solids, 1987
Abstract Atomistic features of the Soret effect in multi-component systems, especially those in binary systems, are treated by the path probability method of irreversible statistical mechanics based on a rigid lattice model as an extension of our earlier treatment of the effect in one-component systems.
S.A. Akbar, M. Kaburagi, H. Sato
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Abstract Atomistic features of the Soret effect in multi-component systems, especially those in binary systems, are treated by the path probability method of irreversible statistical mechanics based on a rigid lattice model as an extension of our earlier treatment of the effect in one-component systems.
S.A. Akbar, M. Kaburagi, H. Sato
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Kinetics of the Soret effect: Transient in the transport process
Physical Review A, 1990A Greens function is given for the canonical form of the thermodiffusion problem. The analytical and numerical solutions obtained for an initially homogeneous mixture reveal that the process at the boundaries is enhanced during the initial phase. This has to be related to the observations made by Tanner [Trans. Faraday Soc.
Van Vaerenbergh, Stefan +1 more
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Soret Effect and Free Convection: A Way to Measure Soret Coefficients
2002The measurement of Soret coefficients is discussed in the frame of natural convection, both for Rayleigh-Benard and thermogravitational configurations. The Rayleigh-Benard configuration, together with the measurement of the Hopf frequency, is recommended for negative values of Soret coefficients; the record of the thermogravitational transient vertical
Jean-Karl Platten +2 more
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Large-scale convection induced by the Soret effect
Physical Review A, 1989We present an experimental study of free convection in binary mixtures when convection is theoretically predicted to appear in the form of rolls of large extent. Quantitative measurements of the very slow velocities associated with this convective pattern are presented.
, Lhost, , Platten
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