Microconvection in vertical channel at given heat flux | Научно-инновационный портал СФУ

Microconvection in vertical channel at given heat flux

Тип публикации: статья из журнала

Год издания: 2016

Идентификатор DOI: 10.1088/1742-6596/754/2/022001

Ключевые слова: Fluid dynamics, Heat conduction, Heat transfer, Hydrodynamics, Thermal load, Conducting liquid, Disturbance waves, Polygonal structures, Problem parameters, Spatial characteristics, Thermal disturbance, Two-dimensional flow, Vertical channels, Heat flux

Аннотация: A problem on stability of the viscous heat-conducting liquid flow in the vertical channel at given heat flux on the permeable solid walls is studied. The two-dimensional flow is described by an exact invariant solution of the microconvection equations. The investigation of the exact solution allows one to find out the extent of influence of the thermal load, gravity and the system geometry on the flow structure. Stability of the solution is investigated in the framework of the linear theory. The spectrum of the spatial characteristic perturbations is analyzed in the space of problem parameters. Typical forms of the hydrodynamic and thermal disturbances are presented and dependence of characteristics of the arising structures on the thermal load and gravity is established. Convective cells, hydrothermal rolls and polygonal structures can appear in the channel. By weak gravity the hydrothermal rolls are not formed. Changing heat flux and disturbance wave length lead to deformation of the cells and complication of the spatial form of the structures. © Published under licence by IOP Publishing Ltd.

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Издание

Журнал: All-Russian Conference with the School for Young Scientists Thermophysics and Physical Hydrodynamics 2016, TPH 2016 (19 September 2016 through 25 September 2016

Выпуск журнала: Vol. 754, Is. 2

Авторы

  • Bekezhanova V.B. (Institute of Computational Modeling, SB, RAS, 50/44 Krasnoyarsk, Akademgorodok, Russian Federation, Institute of Mathematics and Computer Sciences, Siberian Federal University, Svobodny, 79, Krasnoyarsk, Russian Federation)
  • Shefer I.A. (Institute of Mathematics and Computer Sciences, Siberian Federal University, Svobodny, 79, Krasnoyarsk, Russian Federation)

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