Development of Convection in Binary Mixture with Soret Effect
نویسندگان
چکیده
Molecular diffusion processes are caused by concentration gradients in a multi-component mixture. Noticeable diffusion flux can also be induced by temperature gradients which lead to partial separation of constituent components. This cross effect between temperature and concentration is known as thermo diffusion or Soret effect. This effect can be quite important in the analysis of the distributions of components in oil reservoirs. Precise measurements of diffusion coefficients under terrestrial conditions are often perturbed by buoyancy-induced flows. The microgravity environment minimizes the effect of gravity and allows the true diffusion limit to be achieved. On the other hand the background g-jitters encountered in many space experiments may alter the benefits of the microgravity environment, e.g. see the report by Shevtsova et al.[1]. Thus a study of the effects of controlled vibrations on measurements of diffusion and Soret coefficients in liquid systems could be beneficial.
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