Труды сотрудников ИВМ СО РАН

/ V. M. Belolipetskii, S. N. Genova // Russ. J. Numer. Anal. Math. Model. - 1997. - Vol. 12, Is. 4. - P319-334, DOI 10.1515/rnam.1997.12.4.319. - Cited References: 13 . - ISSN 0927-6467РУБ Engineering, Multidisciplinary + Mathematics, Applied

Аннотация: The work deals with the numerical study of hydrothermal processes in well-drained basins of large extent. We consider approximate mathematical models for studying slow flows of a stratified fluid and estimating the flow pattern in the region adjacent to the water intake. We describe the methods of determining the heat exchange through the free surface of the basin and wind stress. We give examples of calculations of the schematic reservoirs of the Krasnoyarsk, Turukhansk, and Boguchansk Hydros.

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Держатели документа:
Computer Center, Siberian Br. Russ. Acad. of Sci., Krasnoyarsk 660036, Russian Federation
ИВМ СО РАН

Доп.точки доступа:
Belolipetskii, V.M.; Белолипецкий, Виктор Михайлович; Genova, S.N.; Генова, Светлана Николаевна

[Text] / V. M. Belolipetsky, S. N. Genova // Int. J. Comput. Fluid Dyn. - 1998. - Vol. 10, Is. 2. - P151-158, DOI 10.1080/10618569808961681. - Cited References: 6 . - ISSN 1061-8562РУБ Mechanics + Physics, Fluids & Plasmas

Аннотация: The erection of large hydroelectric power stations leads to appreciable changes in hydrothermal and ice river regimes both above and below the hydroscheme. The river regime change affects the adjacent areas ecology. To estimate completely the ecologic effect of designed and already constructed hydroelectric power stations, it is necessary to determine the hydrothermal and ice river regime changes. As a methodical basis for the construction of a set of computer algorithms, a method of splitting by physical processes and the module principle has been used. Among the hydro-ice-thermics problems of rivers and water reservoirs are the following: the determination of the temperature regime of a water reservoir, an investigation of stratified flows in a weakly-running water reservoir; an investigation of a hydrothermal river regime; an investigation of ice cover edge dynamics in the downstream of a river. For every problem, mathematical models of different levels of complication and computer programs have been worked out.

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Держатели документа:
Russian Acad Sci, Ctr Comp, Siberian Div, Krasnoyarsk, Russia
Krasnoyarsk State Univ, Krasnoyarsk, Russia
Krasnoyarsk State Tech Univ, Krasnoyarsk, Russia
ИВМ СО РАН

Доп.точки доступа:
Belolipetskii, V.M.; Белолипецкий, Виктор Михайлович; Genova, S.N.; Генова, Светлана Николаевна

/ V. B. Bekezhanova, I. A. Shefer // J. Phys. Conf. Ser. - 2016. - Vol. 754, Is. 2, DOI 10.1088/1742-6596/754/2/022001 . - ISSN 1742-6588
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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Держатели документа:
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

Доп.точки доступа:
Bekezhanova, V. B.; Shefer, I. A.

/ V. Yasnou [et al.] // Int. J. Heat Mass Transf. - 2018. - Vol. 123. - P747-759, DOI 10.1016/j.ijheatmasstransfer.2018.03.016 . - ISSN 0017-9310
Аннотация: We present an experimental and complementary computational study of a two-phase flow in a liquid bridge that develops under the action of buoyant and Marangoni forces in the presence of a gas stream parallel to the interface. The gas flow is counter-directed with respect to the steady flow in liquid. The forced gas flow along the interface provides actions on the system via shear stresses and heat exchange. For the experimental fluids (n-decane, nitrogen) the ratio of viscosities is large, about 40, and the gas Reynolds number is moderate, Reg = 120. Thus, heat transfer is the prevailing mechanism by which gas affects the flow in a liquid. The effect of gas temperature on the evolution of flow states is examined. The study reveals that in the supercritical region, ?T>1.25?Tcr, the flow dynamics can be divided in three regimes relative to the gas temperature. When the gas is colder than the temperature of the supporting disk, multiple transitions between the oscillatory states occur: periodic, quasi-periodic with two frequencies, quasi-periodic with three frequencies and noisy quasi-periodic with three frequencies. In the case, when the gas temperature approaches the temperature of the cold disk and goes up to the mean temperature, the flow remains periodic up to the largest tested ?T. In the case of hotter gas, the flow also remains periodic far above the threshold of hydrothermal instability, but the azimuthal mode of the periodic oscillatory flow is changed. The stability window is found to exist between these two azimuthal modes and its location is sensitive to the gas parameters as well as to the geometry of a liquid bridge. It opens a possibility that oscillatory instability can be stabilized by choosing specific temperatures and velocities of counter-current gas. © 2018 Elsevier Ltd

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Держатели документа:
MRC, CP-165/62, Universite libre de Bruxelles (ULB), 50, Ave. F.D. Roosevelt, Brussels, Belgium
Institute of Computational Modelling, SB RAS, Akademgorodok 50, str. 44, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Yasnou, V.; Gaponenko, Y.; Mialdun, A.; Shevtsova, V.

[Текст] : статья / В. М. Белолипецкий, С. Н. Генова // Решетневские чтения. - 2017. - № 21-2. - С. 5-7 . - ISSN 1990-7702
   Перевод заглавия: Simplified mathematical models of the hydrothermal regime of the Krasnoyarsk reservoir

УДК

519.6

Аннотация: Рассматриваются упрощенные математические модели для описания температурного режима Красноярского водохранилища, стратифицированных течений несжимаемой жидкости вблизи водозабора.
The research focuses on simplified mathematical models to describe the temperature regime of the Krasnoyarsk reservoir and flows of stratified incompressible fluid near the water intake.

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Держатели документа:
Институт вычислительного моделирования СО РАН

Доп.точки доступа:
Белолипецкий, В.М.; Belolipetskii V.M.; Генова, С.Н.; Genova S.N.

/ V. M. Belolipetskii, P. V. Belolipetskii, S. N. Genova // J. Sib. Fed. Univ.-Math. Phys. - 2018. - Vol. 11, Is. 5. - P569-580, DOI 10.17516/1997-1397-2018-11-5-569-580. - Cited References:20. - The work was supported by the Russian Foundation for basic research, the government of the Krasnoyarsk region, the Krasnoyarsk regional Fund for support of scientific and technical activities (project 16-41-240425). . - ISSN 1997-1397. - ISSN 2313-6022РУБ Mathematics

Аннотация: Mathematical models of hydrothermal processes for stratified flows in flow-through reservoirs are considered in the paper. Models are based on the equations of fluid mechanics and heat transfer. They are applied to describe the hydrothermal regime of the Krasnoyarsk Reservoir. It is assumed that the reservoir depth is varied continuously, and the reservoir width is varied in a stepwise way. A numerical algorithm to study two-dimensional vertically stratified flows in terms of the streamfunction and the vorticity is considered. Parametrization of coefficients of the vertical turbulent exchange is proposed. Numerical results for currents at the dam area of the Krasnoyarsk reservoir are presented. The numerical model allows one to determine the temperature of water entering the intake openings in relation to the stratification, the position of water intake and the flow rate of water.

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Держатели документа:
RAS, Inst Computat Modelling, SB, Akad Gorodok 50-44, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Belolipetskii, Victor M.; Belolipetskii, Pavel V.; Genova, Svetlana N.; Russian Foundation for basic research; government of the Krasnoyarsk region; Krasnoyarsk regional Fund for support of scientific and technical activities [16-41-240425]

[Текст] : статья / Николай Яковлевич Шапарев, Юрий Иванович Шокин // Вычислительные технологии. - 2018. - Т. 23, № 6. - С. 107-114, DOI 10.25743/ICT.2018.23.6.010 . - ISSN 1560-7534
   Перевод заглавия: Modelling of summertime hydrothermal regime in the downstream pool of Krasnoyarsk hydroelectric power station
Аннотация: Предлагается модель летнего гидротермического режима р. Енисей в нижнем бьефе Красноярской ГЭС на основе детерминированного подхода. На теплообмен воды с окружающей средой влияют следующие физические процессы: поглощение водой прямой и рассеянной солнечной радиации; поглощение поверхностью воды тепловой инфракрасной радиации (ТИР), исходящей из атмосферы; излучение поверхностью воды ТИР; испарительный и конвективный теплообмен. Результаты моделирования сравниваются с температурными данными, полученными с гидропостов.
Here we consider the summertime hydrothermal regime in a 124-km river occurring within the interval (reach) downstream of the Krasnoyarsk HPP on July 3, 2016 based on the deterministic modelling approach. The reach area is divided by 4 cross-section lines (0.5, 40, 77, 124 km) with gauging stations at the first, second and forth section lines to measure water temperature. Temperature measurements at the gauging stations are taken at time (at hour 08:00 and 20:00). Water temperature at the first gauging station was 7.2^∘ C and remained constant during the time period under consideration. To carry out mathematical simulation by analogy with other authors, we use the Fourier equation. We have proposed a simple model for simulating summertime hydrothermal regime of a river based on calculation of water temperature in a coordinate system moving with water. The physically based estimation of water heat budget takes into account absorption of solar radiation by water surface, emission and absorption of atmospheric thermal infrared radiation (TIR) by water, convective heating of water as well as heat loss due to evaporative processes. The temporal fluctuation pattern of direct and scattered solar radiation depends on the zenith angle and atmospheric absorption. The dominant water heating factor is solar radiation during the daytime and atmospheric TIR at night. Emits TIR defined by the Stefan-Boltzmann law. Water temperatures 124 km downstream of the Krasnoyarsk HPP on the Yenisei River computed using the proposed model with consideration of morphometric characteristics are close to the recorded temperatures observed at the gauging stations, which proves that the deployed physical-mathematical model providing an adequate description of the actual hydrothermal processes. Our spatial-temporal analysis has revealed no diurnal fluctuations of water temperature, which we attribute to the fact that “cold” water leaving the dam enters the “warm” surrounding environment providing a permanent source of water heating.

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Держатели документа:
Институт вычислительного моделирования СО РАН
Институт вычислительных технологий СО РАН
Сибирский федеральный университет

Доп.точки доступа:
Шапарев, Николай Яковлевич; Shaparev Nikolay Yakovlevich; Шокин, Юрий Иванович; Shokin Yuriy Ivanovich

/ N. Y. Shaparev, Y. I. Shokin, O. E. Yakubailik // IOP Conference Series: Earth and Environmental Science : Institute of Physics Publishing, 2018. - Vol. 211: International Conference and Early Career Scientists School on Environmental Observations, Modeling and Information Systems, ENVIROMIS 2018 (5 July 2018 through 11 July 2018, ) Conference code: 143586, Is. 1, DOI 10.1088/1755-1315/211/1/012022 . -
Аннотация: The summertime hydrothermal regime of the Yenisei River downstream of the Krasnoyarsk hydroelectric power plant is modeled using a remote sensing and deterministic approach. The Fourier equation is used, and the following physical processes contributing to the heat exchange between the water and the surroundings are taken into consideration: the absorption of direct and scattered solar radiation by water, the absorption of downwelling thermal infrared radiation (TIR) from the atmosphere by water surface, TIR back from the water surface, the convection of heat and the heat loss due to evaporation of water. A clear-skies river thermal regime under no wind condition is studied at 32-km downstream the power plant, and the obtained results are compared against remote sensing data. © Published under licence by IOP Publishing Ltd.

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Держатели документа:
Institute of Computational Modelling of the Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50/44, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny pr., 79., Krasnoyarsk, 660041, Russian Federation
Institute of Computational Technologies of the Siberian Branch of the Russian Academy of Sciences, Academician M.A. Lavrentiev avenue, 6., Novosibirsk, 630090, Russian Federation

Доп.точки доступа:
Shaparev, N. Y.; Shokin, Y. I.; Yakubailik, O. E.

[Текст] : доклад, тезисы доклада / Н. Я. Шапарев, Ю. И. Шокин, О. Э. Якубайлик // = Международная конференция и школа молодых ученых по измерениям, моделированию и информационным системам для изучения окружающей среды: ENVIROMIS-2018 / International Conference and Early Career Scientists School on Environmental Observations, Modeling and Information Systems: ENVIROMIS-2018 (2018 ; 05.06 - 11.07 ; Томск) : Томский центр научно-технической информации . - ISBN 978-5-89702-441-4
   Перевод заглавия: Research of hydrothermal regime in the Krasnoyarsk hydroelectric power station downstream by mathematical modeling and remote sensing

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Держатели документа:
Институт вычислительного моделирования СО РАН, ФИЦ КНЦ СО РАН
Институт вычислительных технологий СО РАН
Сибирский федеральный университет

Доп.точки доступа:
Шапарев, Н.Я.; Shaparev N.Ya.; Шокин, Ю.И.; Shokin Yu.I.; Якубайлик, О.Э.; Yakubailik O.E.; International Conference and Early Career Scientists School on Environmental Observations, Modeling and Information Systems: ENVIROMIS-2018(2018 ; 05.06 - 11.07 ; Томск)
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/ V. M. Belolipetskii, S. N. Genova // Therm. Sci. - 2019. - Vol. 23: 8th All-Russian Scientific Conference on Current Issues of Continuum (NOV, 2018, Tomsk State Univ, Tomsk, RUSSIA). - S455-S462, DOI 10.2298/TSCI19S2455B. - Cited References:17 . - ISSN 0354-9836. - ISSN 2334-7163РУБ Thermodynamics

Аннотация: The scheme of the reservoir bed is applied to numerical study of the hydrothermal regime of the Krasnoyarsk Reservoir in the form of regions with continuous depth variation and abrupt width change. A numerical algorithm for the research of 2-D stratified currents in vertical plane in flowing reservoirs is considered taking into account Coriolis force. The numerical model determines the vertical distributions of water temperature in various areas of a reservoir real meteodata. There are given examples of water currents and temperature calculations in the Krasnoyarsk Reservoir. The results of the calculations are consistent with the observational data.

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Держатели документа:
RAS, Inst Computat Modelling, SB, Krasnoyarsk, Russia.

Доп.точки доступа:
Belolipetskii, Victor M.; Genova, Svetlana N.

/ N. Y. Shaparev // Therm. Sci. - 2019. - Vol. 23: 8th All-Russian Scientific Conference on Current Issues of Continuum (NOV, 2018, Tomsk State Univ, Tomsk, RUSSIA). - S607-S614, DOI 10.2298/TSCI19S2607S. - Cited References:16. - This work was carried out with partial financial support from the Russian Foundation for Basic Research and the Government of the Krasnoyarsk Territory (project No. 18-41-242006 p_mk) . - ISSN 0354-9836. - ISSN 2334-7163РУБ Thermodynamics

Аннотация: A summertime hydrothermal regime of the Yenisei River downstream of the Krasnoyarsk hydroelectric power plant is modeled based on a deterministic approach. To that end, the Fourier equation is used and the following physical processes contributing to the heat exchange between water and the surroundings are taken into consideration: absorption of direct and scattered solar radiation by water, absorption of downwelling thermal infrared radiation from the atmosphere by water surface, thermal infrared radiation back from the water surface, convection of heat and heat loss due to evaporation of water. A clear skies river thermal regime under no wind is studied in a 124-km stream reach below the power plant and the obtained results are compared against temperatures recorded at gauging stations.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Computat Modelling, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Shaparev, Nikolay Y.; Russian Foundation for Basic Research; Government of the Krasnoyarsk Territory [18-41-242006 p_mk]

/ N. Y. Shaparev // Proceedings of SPIE - The International Society for Optical Engineering : SPIE, 2019. - Vol. 11208: 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics 2019 (30 June 2019 through 5 July 2019, ) Conference code: 156374. - Ст. 1120802, DOI 10.1117/12.2538261 . -
Аннотация: We use a deterministic approach to simulate summer hydrothermal regime of a stream. Our simple model involves calculating water temperature in a coordinate system moving with the water. The physically based estimation of water heat budget takes into account absorption of solar radiation by water surface, emission of thermal infrared radiation (TIR) by water and absorption of atmospheric TIR, as well as convective heating of water and heat loss due to evaporative processes. The proposed model is applied to simulate stable diurnal thermal regime of the Yenisei River, employing the Fourier equation for mathematical modeling. We assess the contribution of each of the physical processes into water temperature and come up with a stable temporal diurnal thermal regime for the Yenisei River. © 2019 SPIE.

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Держатели документа:
Institute of Computational Modeling, Federal Research Center, Krasnoyarsk Science Center of SB RAS, Krasnoyarsk, 660036, Russian Federation
National Research Tomsk State University, Tomsk, 634050, Russian Federation

Доп.точки доступа:
Shaparev, N. Y.