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Hadrons and Nuclei

EPJ E Colloquium - European Space Agency experiments on thermodiffusion of fluid mixtures in space

Diffusive processes are ubiquitous in daily life and in natural processes, playing a key role in the transformation and mixing of fluid mixtures, and there is considerable scientific and industrial interest in such mixing processes. One consequence of diffusion is the development of non-equilibrium fluctuations in liquid mixtures, particularly when fluids are exposed to a thermal gradient. This is easier to observe in weightlessness, as gravity dampens this phenomenon on Earth especially for large fluctuations.

A new Colloquium paper published in EPJE describes the European Space Agency (ESA) experiments devoted to the study of thermodiffusion of fluid mixtures in a microgravity environment, where sedimentation and convection do not affect the mass flow induced by the Soret effect. It first describes the experiments performed on binary mixtures in the IVIDIL and GRADFLEX experiments. Then, further experiments on ternary mixtures and complex fluids performed in DCMIX and planned in the context of the NEUF-DIX project are presented. Finally, details are given of the multi-component mixtures studied in the SCCO project.

David Blaschke, Thomas Duguet and Maria Jose Garcia Borge
We are grateful to the referees for their very detailed review of our manuscript and for the important remarks and corrections. The referees are very nice experts of the subject of the paper. The manuscript has been revised with our pleasure. Thank you very much for the choice of the referees who were high level experts and kind scientists.

Avazbek Nasirov, Joint Institute for Nuclear Research, Moscow Region, Russian Federation

ISSN (Print Edition): 1434-6001
ISSN (Electronic Edition): 1434-601X

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