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EPJ E Topical Issue on Thermal Non-Equilibrium Phenomena in Fluid Mixtures

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Published on 12 October 2022

When a temperature difference, or gradient, is applied over a bulk fluid mixture at equilibrium, the phenomenon known as thermodiffusion, or the Ludwig-Soret effect, may occur. The thermal force will in general cause the components in the mixture to migrate until the thermal force is balanced by concentration gradients. If the thermal force is applied to a colloidal suspension, the colloids drift towards cold or hot regions. This phenomenon is commonly referred to as thermophoresis. If the fluid is soaked in a porous medium, an additional effect known as thermos-osmosis may occur. Thermo-osmosis leads to a pressure difference. These effects are different from normal diffusion and osmosis, where a concentration difference is the driving force.

The complexity of acquiring, understanding, and modeling thermodiffusion is a continuous challenge. Even the sign of the Soret coefficient is hard to predict. Several ternary systems have been measured in recent years, and new results are included in this issue. Systematic selections of components and compositions give trends in the data that show the effects of the components’ chemical nature.

The EPJ E topical issue “Thermal non-equilibrium phenomena in fluid mixtures” includes new results presented at the International Meeting on Thermodiffusion (IMT14) organized by The Norwegian University of Science and Technology, Trondheim, Norway on May 25-27, 2021.

New results on

  • Thermodiffusion in multicomponent fluid mixtures and solutions
  • Theories and empirical models
  • Methodological developments
  • Thermophoresis of colloids
  • Thermodiffusion in porous systems

are presented in the 15 papers making this collection. All articles are available here and are freely accessible until 5 December 2022. For further information read the Editorial.

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This was our first experience of publishing with EPJ Web of Conferences. We contacted the publisher in the middle of September, just one month prior to the Conference, but everything went through smoothly. We have had published MNPS Proceedings with different publishers in the past, and would like to tell that the EPJ Web of Conferences team was probably the best, very quick, helpful and interactive. Typically, we were getting responses from EPJ Web of Conferences team within less than an hour and have had help at every production stage.
We are very thankful to Solange Guenot, Web of Conferences Publishing Editor, and Isabelle Houlbert, Web of Conferences Production Editor, for their support. These ladies are top-level professionals, who made a great contribution to the success of this issue. We are fully satisfied with the publication of the Conference Proceedings and are looking forward to further cooperation. The publication was very fast, easy and of high quality. My colleagues and I strongly recommend EPJ Web of Conferences to anyone, who is interested in quick high-quality publication of conference proceedings.

On behalf of the Organizing and Program Committees and Editorial Team of MNPS-2019, Dr. Alexey B. Nadykto, Moscow State Technological University “STANKIN”, Moscow, Russia. EPJ Web of Conferences vol. 224 (2019)

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ISSN: 2100-014X (Electronic Edition)

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