Computer simulation of the convection process near a vertically located source

Jumayev, Jura; Ziyomat, Shirinov; Khakim, Kuldoshev

doi:10.1109/icisct47635.2019.9012046

Cited by 2 publications

(1 citation statement)

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“…In the article of the authors [4], the process of the emergence of dynamic and temperature boundary layers near a vertically located rod, which is a source of heat, is modeled. A stationary system of differential equations in partial derivatives is formulated in the boundary layer approximation and also considering the medium to be compressible.…”

Section: Introductionmentioning

confidence: 99%

Simulation of natural convection in a solar collector

Jumaev,

Kodirov,

Mirzaev

2023

J. Phys.: Conf. Ser.

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The process of natural convection in a flat solar collector, which was designed by the authors, was mathematically modeled using experimental data. Stones were used as storage means. The inclined collector is expressed as a two-dimensional plate for modeling. The initial and boundary conditions were formulated. It was assumed that the flow in this region is laminar. To simulate the flow of natural air convection, a system of non-stationary partial differential equations was chosen based on the laws of conservation of mass, momentum and energy in the Boussinesq approximation. The equations were solved in a dimensionless form using the finite difference method and an explicit scheme. The picture of the temperature fields and the appearance of convection was obtained on the basis of experimental temperature data in the inlet and outlet zones of the collector, as well as on the surface of the heat accumulator during the day. To evaluate the effectiveness of the resulting model an average approximation error (approximation) of 7.7% was established. The results obtained in specific values of the Grashof and Prandtl numbers are presented in the form of graphs.

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Section: Introductionmentioning

confidence: 99%