Abstract
The measurement of Soret coefficients is discussed in the frame of natural convection, both for Rayleigh-Bénard and thermogravitational configurations. The Rayleigh-Bénard configuration, together with the measurement of the Hopf frequency, is recommended for negative values of Soret coefficients; the record of the thermogravitational transient vertical velocity, combined with the vertical separation at steady state, is a good way for an accurate determination of positive values of Soret coefficients.
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Platten, JK., Dutrieux, JF., Chavepeyer, G. (2002). Soret Effect and Free Convection: A Way to Measure Soret Coefficients. In: Köhler, W., Wiegand, S. (eds) Thermal Nonequilibrium Phenomena in Fluid Mixtures. Lecture Notes in Physics, vol 584. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45791-7_15
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DOI: https://doi.org/10.1007/3-540-45791-7_15
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