Numerical study of the effect of surface tension on the flow structure in a cylindrical vessel, taking into account the maximum density of water

About the authors:

Oleg A. Simonov, Cand. Sci. (Phys.-Math.), Deputy Director, Tyumen Scientific Center of the Siberian Branch of the Russian Academy of Sciences; eLibrary AuthorID, ORCID, Scopus AuthorID, s_o_a@ikz.ru

Lyudmila N. Filimonova, Junior Researcher, Tyumen Branch of the Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences; Postgraduate Student, Tyumen Scientific Center of the Siberian Branch of the Russian Academy of Sciences; eLibrary AuthorID, ORCID, filimonovaln@mail.ru

Abstract:

A convective flow of water near the density inversion point in a cylindrical vessel, in the center of which a cylindrical cooling element is vertically located, was numerically investigated. The effect of the maximum density of water on the structure of convective flows without taking into account the surface tension and taking into account the surface tension at the upper boundary was studied. The significant effect of the surface tension at the interface between the phases(of phases) on the formation of a convective flow. The analysis of temperature and velocity fields shows that when taking into account the influence of surface tension, the convective flow of the liquid grows in intensity and average flow rates, which leads to a faster cooling of the liquid in the vessel.

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