Study of convective structures and phase transition induced in a water layer by non-stationary boundary conditions

Study of convective structures and phase transition induced in a water layer by non-stationary boundary conditions Full article

Conference

15th International Conference on Optical Methods of Flow Investigation,
24-28 Jun 2019 , Москва

Journal

Journal of Physics: Conference Series
ISSN: 1742-6588 , E-ISSN: 1742-6596

Output data

Year: 2019, Volume: 1421, Number: 1, Article number : 012047, Pages count : DOI: 10.1088/1742-6596/1421/1/012047

Tags

Convective flow; Density inversion; Dynamic structure; Heat exchanging surface; Interference field; Nonlinear dependence; Phase functions; Velocity field

Authors

Dubnishchev Yu N ^1,3 , Arbuzov V A ^1,3 , Arbuzov E V ^1,2,3 , Berdnikov V S ^1,3 , Zolotukhina O S ^1,3 , Kislitsin S A ^1,3

Affiliations

1	Kutateladze Institute of Thermophysics of the, Siberian Branch, Russian Academy of Sciences, Russian Federation
2	Sobolev Institute of Mathematics, Siberian Branch, Russian Academy of Sciences, Russian Federation
3	Novosibirsk State Technical University, Russian Federation

The problem of reconstructing interference and Hilbert structures from a numerical model of the evolution of the thermal field of convective flows in a water layer bounded by flat heat-exchanging surfaces under unsteady boundary conditions in the monotonic cooling mode and taking into account density inversion at a temperature of +4 °C was solved. The simulation of the thermal fields of convective flows in the form of the dynamic structure of isotherms was carried out taking into account the nonlinear dependence of thermal conductivity and water density on temperature. The field of the phase function, its Hilbert image and the interference field, which are compared with the results of the interference and Hilbert visualization of the fields of phase optical density obtained in the experiment, were reconstructed from the isotherms field supplemented by calculating of the velocity field and of the temperature gradients field. The presented films illustrate the qualitative adequacy of the coevolution of numerical models and real processes. © Published under licence by IOP Publishing Ltd.

Dubnishchev Y.N. , Arbuzov V.A. , Arbuzov E.V. , Berdnikov V.S. , Zolotukhina O.S. , Kislitsin S.A.
Study of convective structures and phase transition induced in a water layer by non-stationary boundary conditions
Journal of Physics: Conference Series. 2019. V.1421. N1. 012047 . DOI: 10.1088/1742-6596/1421/1/012047 Scopus OpenAlex

Scopus:	2-s2.0-85078288941
OpenAlex:	W2998200795

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