| Issue |
MATEC Web Conf.
Volume 286, 2019
14th Congress of Mechanics (CMM2019)
|
|
|---|---|---|
| Article Number | 07015 | |
| Number of page(s) | 3 | |
| Section | Fluid Mechanics, Rheology, Modeling, Instabilities and Transition | |
| DOI | https://doi.org/10.1051/matecconf/201928607015 | |
| Published online | 14 August 2019 | |
Separation stability in binary mixtures with negative Soret numbers
1
– Department of Physical and Inorganic Chemistry, Universitat Rovira i Virgili, C/ marcel.li Domingo s/n, 43007 Tarragona, Spain
2
Mechanical and Industrial Manufacturing Department, MGEP Mondragon Goi Eskola Politeknikoa, Loramendi 4 Apdo. 23, 20500 Mondragon, Spain
In the present work, by using a paralelepipedic thermogravitational microcolumn, the temperature gradient influence on the stability of the flow was or has been examined, emphasizing mixtures with negative Soret coefficients. Experiments and numerical analysis were conducted for DCMIX2 Toulene-Methanol binary subsystem. This binary subsystem has a broad range of negative Soret values for low concentrations of Methanol which was analysed. Two different concentrations have been studied in order to confirm existence of temporal stability windows of those mixtures. Experiments were compared with numerical simulations conducted in open source software OpenFOAM, for both cases.
Key words: negative Soret / separation stability / binary mixtures / themogravitational microcolumn
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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