Труды сотрудников ИВМ СО РАН

[Текст] : учебное пособие / В. К. Андреев, Ю. А. Гапоненко ; Федеральное агентство по образованию, Красноярский госуниверситет, Красноярский государственный технический университет, Российская академия наук. Сибирское отделение. Институт вычислительного моделирования. - Красноярск : Красноярский Госуниверситет, 2006. - 392 с. : ил., табл. - Библиогр.: с. 367-386. - ISBN 5-7638-0646-8 : Б. ц.

УДК

536.25

ББК В365.25

Аннотация: Учебное пособие содержит некоторые вопросы течений жидких сред в неклассических моделях конвекции. Выведены граничные условия на поверхности раздела и свободной границе. Исследована иерархия моделей конвекции в замкнутых объемах. Рассмотрены возможные постановки начально-краевых задач для модели изотермически несжимаемой жидкости с постоянными коэффициентами переноса. Изучены групповые свойства уравнений различных моделей конвекции и найдены широкие классы точных решений. Излагаются результаты численных исследований конвективных течений в слабых силовых полях. Определены условия возникновения конвекции и изучена устойчивость стационарных течений. Пособие предназначено студентам, магистрантам и аспирантам факультета математики и информатики. Оно может быть полезно и специалистам в области гидродинамики межфазных поверхностей и теории устойчивости. Рекомендовано УМС по математике и механике УМО по классическому университетскому образованию РФ в качестве учебного пособия для студентов высших учебных заведений, обучающихся по группе направлений и специальностей "механика"


Доп.точки доступа:
Гапоненко, Юрий Анатольевич; Gaponenko Y.A.; Andreev V.K. Др
Свободных экз. нет

[Текст] : статья / И.И. Рыжков // J. of Siberian Federal University. Mathematics & Physics. - 2010. - №3(4). - С. 433-449


Доп.точки доступа:
Gaponenko, Y.A.; Гапоненко, Юрий Анатольевич; Рыжков, Илья Игоревич

[Текст] : статья / Ю.А. Гапоненко // Вестник КрасГУ. "Физико-математические науки". - 2006. - №.9. - С. 175-184


Доп.точки доступа:
Gaponenko Y.A.

[Текст] : тезисы доклада международной конференции "Дифференциальные уравнения, теория функции и приближения" / Ю.А. Гапоненко // НГУ. - Новосибирск, 2007. - С. 570


Доп.точки доступа:
Gaponenko Y.A.

[Текст] : монография / В.К. Андреев и др. - М. : Физматлит, 2007. - Б. ц.


Доп.точки доступа:
Гапоненко, Юрий Анатольевич; Gaponenko Y.A.; Гончарова, Ольга Николаевна; Пухначев, Владислав Васильевич; Andreev V.K.
Свободных экз. нет

[Text] : монография / V.K. Andreev, Y.A. Gaponenko, O.N. Goncharova, V.V. Pukhnachev. - Berlin [etc.] : Walter de Gruyter, 2012. - XV, 417 p. - (De Gruyter Studies in Mathematical Physics ; 5). - Библиогр.: с. 401-414. - Указ.: с. 415-420. - ISBN 978-3110258141 : Б. ц. - DOI 10.1515/9783110258592
Аннотация: Phenomena of convection are abundant in nature as well as in industry. This volume addresses the subject of convection from the point of view of both, theory and application. While the first three chapters provide a refresher on fluid dynamics and heat transfer theory, the rest of the book describes the modern developments in theory. Thus it brings the reader to the "front" of the modern research. This monograph provides the theoretical foundation on a topic relevant to metallurgy, ecology, meteorology, geo-and astrophysics, aerospace industry, chemistry, crystal physics, and many other fields

Текст на сайте издателя


Доп.точки доступа:
Gaponenko, Y.A.; Гапоненко, Юрий Анатольевич; Goncharova, O.N.; Гончарова, Ольга Николаевна; Pukhnachev, V.V.; Пухначев, Владислав Васильевич; Андреев, Виктор Константинович
Свободных экз. нет

[Text] / Y. Gaponenko, V. Shevtsova // Acta Astronaut. - 2010. - Vol. 66, Is. 01.02.2013. - pp. 174-182, DOI 10.1016/j.actaastro.2009.05.019. - Cited References: 10 . - ISSN 0094-5765РУБ Engineering, Aerospace

Аннотация: We report on a numerical study of the mixing of two miscible fluids in gravitationally stable configuration. In the absence of external forces the diffusion process leads to the mixing of species. The aim of this study is to analyze the physical mechanism by which vibrations affect the mixing characteristic of two stratified miscible fluids. The translational periodic vibrations of a rigid cell filled with different mixtures of water-isopropanol are imposed. The vibrations with a constant frequency and amplitude are directed along the interface. In absence of gravity vibration-induced mass transport is incomparably faster than in diffusion regime. Our results highlight the strong interplay between gravity and vibrational impact, the relative weight of each effect is determined by ratio vibrational and classical Rayleigh numbers. (C) 2009 Elsevier Ltd. All rights reserved.


Доп.точки доступа:
Gaponenko, Y.; Гапоненко, Юрий Анатольевич; Shevtsova, V.

[Text] : статья / Y. A. Gaponenko, V. Shevtsova // Microgravity Science and Technology. - 2008. - Vol. 20, Iss. 3-4 . - p. 307-311, DOI 10.1007/s12217-008-9075-7 . - ISSN 0938-0108
Аннотация: The aim of this study is to analyze the physical mechanism by which vibrations affect the mixing characteristic of two initially stratified miscible fluids. The translational periodic vibrations of a rigid cell filled with different mixtures (Sc = 7125) are considered. The vibrations with a constant frequency are imposed parallel to the initially planar interface. The ability of the applied vibrations to enhance the flow is examined. At the early stage after imposing the vibrations the Kelvin-Helmholtz instability is observed in absence and at low level of gravity. Later in time the system undergoes a transition to Rayleigh-Taylor instability. With increasing of gravity level the life-time of Kelvin-Helmholtz instability is decreased. We found the critical value of Gr above which this instability do not developed.

Полный текст на сайте журнала


Доп.точки доступа:
Shevtsova, V.; Гапоненко, Юрий Анатольевич

[Text] : статья / Y. Gaponenko, A. Mialdun, V. Shevtsova // International Journal of Multiphase Flow. - 2012. - Vol. 39. - p. 205-215, DOI 10.1007/s12217-008-9075-7 . - ISSN 0938-0108
Аннотация: Experiments and numerical simulations were carried out for shear-driven two-phase flows in a confined volume of liquid under conditions of normal gravity. The geometry corresponds to a cylindrical liquid bridge surrounded by a concentric annular gas channel with external solid walls. The internal part consists of solid supports at the bottom and top, while the central part is a liquid zone filled with a viscous liquid and kept in its position by surface tension. Gas enters into the annular duct, flows between solid walls and upon reaching the liquid zone entrains initially quiescent liquid. The flow dynamics is governed by the Navier–Stokes equations in both fluids, which are numerically solved in the exact experimental geometry taking into account interface deformation by gravity. In the experiments 5 cSt silicone oil and air were used as test fluids and the flow was monitored by means of particle tracking velocimetry. The experiments were performed for unit aspect ratio (the ratio of liquid zone length to its radius), while the simulations of shear-driven flow were carried out for a wide range of parameters. A particular attention is focused on the effect of free surface shape and fluids viscosity contrast on the interfacial flow dynamics. The current study suggests a linear dependence between velocities of gas and liquid when the viscosity of the liquid is larger by two orders of magnitude than that of gas. Another relation is proposed when the fluids viscosity ratio, μl/μg, is less than 50.

Полный текст на сайте правообладателя


Доп.точки доступа:
Mialdun, A.; Shevtsova, V.; Гапоненко, Юрий Анатольевич

[Text] : статья / Y. Gaponenko, A. Mialdun, V. Shevtsova // The European Physical Journal Special Topics. - 2011. - Vol. 192, Iss. 1. - p. 63-70, DOI 10.1140/epjst/e2011-01360-0 . - ISSN 1951-6355
Аннотация: We report the results of numerical and experimental studies of two-phase flows in an annulus. The geometry corresponds to a cylindrical liquid column co-axially placed into an outer cylinder with solid walls. Gas enters into the annular duct and entrains the initially quiescent liquid. The internal column consists of solid rods at the bottom and top, while the central part is a liquid bridge from a viscous liquid and kept in its position by surface tension. Silicone oil 5cSt was used as a test liquid and air and nitrogen as gases. An original numerical approach was developed to study the problem in complex geometry. The flow structure in the liquid is analyzed for a wide range of gas flow rates.

Полный текст на сайте правообладателя


Доп.точки доступа:
Mialdun, A.; Shevtsova, V.; Гапоненко, Юрий Анатольевич

[Text] : статья / Y. Gaponenko, S. Glockner, A. Mialdun, V. Shevtsova // Acta Astronautica. - 2011. - Vol. 69, Iss. 3-4. - p. 119-126DOI 10.1016/j.actaastro.2011.03.012 . -
Аннотация: We report on numerical and experimental study of two-phase flows in a tall annulus. The geometry corresponds to a cylindrical liquid column co-axially placed into an outer cylinder with solid walls. The internal column consists of solid supports at the bottom and top, while the central part is a liquid zone filled with viscous liquid and kept in its position by surface tension. Gas enters into the annular duct and entrains initially quiescent liquid. The liquid bridge interface is deformed by gravity and by a co-axial gas flow which is co- and counter directed with respect to gravity. A new experimental set-up including an optical system for precise measurements of the interface displacement has been designed and developed. In the experiments silicone oil 5cSt was used as a test liquid and air as gas. On numerical side the dynamical response of an isothermal liquid bridge to a coaxial gas flow is examined by simulations of the Navier–Stokes equations. The attention is focused on the following points: time-dependent formation of the equilibrium shape of a liquid bridge in gravity conditions and its deformation by a gas flow, simulation of a flow pattern in a liquid/gas system with deformed free surface. The comparison of the numerical and experimental results for the interface deformation exhibits a satisfactory agreement.

Полный текст на сайте правообладателя


Доп.точки доступа:
Glockner, S.; Mialdun, A.; Shevtsova, V.; Гапоненко, Юрий Анатольевич

[Text] : статья / V. Shevtsova [et al.] // Comptes Rendus Mécanique. - 2011. - Vol. 339, Iss. 5. - p. 310–317DOI 10.1016/j.crme.2011.03.007 . -
Аннотация: The IVIDIL (Influence of VIbrations on DIffusion in Liquids) experiment was aimed at utilizing the International Space Station for investigating the effects of vibrations on liquid diffusion and thermodiffusion. The SODI-IVIDIL project of ESA is gathering together European, Canadian and Russian researchers with complementary skills to prepare and carry out the experiment, to process the raw data and perform numerical modeling of the phenomena. The experiment IVIDIL started on the October 5, 2009. In total 55 experimental runs were successfully completed by 20 January, 2010. A general description of the ISS facility related to the diffusion experiments and accessible for European researchers is briefly presented and some details about IVIDIL instrument are given. The scientific interest of this short article is focused on one of the objectives of the experiment: performing precise measurements of diffusion and thermodiffusion coefficients for binary mixtures in the absence of gravity. We demonstrate possibility of the experimental environment and report on the first results related to measurements of mass transport coefficients in the mixture with the negative Soret effect: 10% isopropanol (IPA)–90% water.

Полный текст на сайте правообладателя


Доп.точки доступа:
Shevtsova, V.; Mialdun, A.; Melnikov, D.; Ryzhkov, I.I.; Рыжков, Илья Игоревич; Gaponenko, Y.; Гапоненко, Юрий Анатольевич; Saghir, Z.; Lyubimova, T.; Legros, J.C.

[Text] : тезисы / Y. Gaponenko, A. Nepomnyashchy, V. Shevtsova // Abstracts of BIFD 2011 : Bifurcation and Instabilities in Fluid Dynamics. - 2011


Доп.точки доступа:
Nepomnyashchy, A.; Shevtsova, V.; Гапоненко, Юрий Анатольевич

[Text] : тезисы / Y. Gaponenko, A. Nepomnyashchy, V. Shevtsova // Abstracts of 6-th Int. conf. on two-phase systems for ground and space applications. - 2011. - p. 54


Доп.точки доступа:
Nepomnyashchy, A.; Shevtsova, V.; Гапоненко, Юрий Анатольевич

[Text] : тезисы / Y. Gaponenko, A. Nepomnyashchy, V. Shevtsova // Abstracts of ELGRA Biennial Symp. and General Assembly "Gravity: from μ to x !". - 2011. - p. 70-71


Доп.точки доступа:
Nepomnyashchy, A.; Shevtsova, V.; Гапоненко, Юрий Анатольевич

[Text] : тезисы / Y. Gaponenko, A. Nepomnyashchy, V. Shevtsova // Abstracts of 4-th Int. symp. on Physical Sciences in Space. - 2011. - p. 37


Доп.точки доступа:
Nepomnyashchy, A.; Shevtsova, V.; Гапоненко, Юрий Анатольевич

[Text] : тезисы / V. Shevtsova [et al.] // Abstracts of 6-th Int. conf. on two-phase systems for ground and space applications. - 2011. - p. 39


Доп.точки доступа:
Shevtsova, V.; Mialdun, A.; Melnikov, D.; Gaponenko, Y.; Гапоненко, Юрий Анатольевич; Legros, J.C.

[Text] : тезисы / V. Shevtsova [et al.] // Abstracts of ELGRA Biennial Symp. and General Assembly "Gravity: from μ to x !". - 2011. - p. 36


Доп.точки доступа:
Shevtsova, V.; Gaponenko, Y.; Гапоненко, Юрий Анатольевич; Sechenyh, V.; Lyubimova, T.; Melnikov, D.; Mialdun, A.

[Text] : тезисы / V.Shevtsova [et al.] // Abstracts of 4-th Int. symp. on Physical Sciences in Space. - 2011. - p. 36


Доп.точки доступа:
Shevtsova, V.; Sechenyh, V.; Gaponenko, Y.; Гапоненко, Юрий Анатольевич; Melnikov, D.; Mialdun, A.; Mazzoni, S.

[Text] / Y. . Gaponenko, A. . Mialdun, V. . Shevtsova // Eur. Phys. J. E. - 2014. - Vol. 37, Is. 10. - Ст. 90, DOI 10.1140/epje/i2014-14090-5. - Cited References: 18. - This work is supported by the PRODEX programme of the Belgian Federal Science Policy Office and ESA. . - ISSN 1292-8941. - ISSN 1292-895XРУБ Chemistry, Physical + Materials Science, Multidisciplinary + Physics, Applied + Polymer Science

Аннотация: One of the targets of the experiment IVIDIL (Influence Vibrations on Diffusion in Liquids) conducted on-board ISS was to study the response of binary mixtures to vibrational forcing when the density gradient results from thermal and compositional variations. Compositional variations were created by the Soret effect and can strengthen or weaken the overall density gradient and, consequently, the response to vibrational forcing. We present the results of two experimental runs conducted on-board ISS in the frame of the experiment IVIDIL for low and strong vibrational forcing. The experimental observations revealed that a significant mean flow is set within 2 minutes after imposing vibrations and later in time it varies weakly and slowly due to the Soret effect. A mathematical model has been developed to compute the thermal and concentration fields in the experiment IVIDIL and verify the accuracy of picture processing based on the classical approach used in non-convective systems with the Soret effect. The effect of temperature and concentrations perturbations by joint action of vibrational convection and Soret effect on long time scale are carefully examined. The model demonstrates that image processing used for non-convective systems is suitable for the systems with vibration-affected thermodiffusion experiment.

WOS

Держатели документа:
[Gaponenko, Y.
Mialdun, A.
Shevtsova, V.] Univ Libre Bruxelles, MRC, EP CP 165 62, B-1050 Brussels, Belgium
[Gaponenko, Y.] Inst Computat Modelling SB RAS, Krasnoyarsk 660036, Russia
ИВМ СО РАН

Доп.точки доступа:
Gaponenko, Y.; Гапоненко, Юрий Анатольевич; Mialdun, A.; Shevtsova, V.; PRODEX programme of the Belgian Federal Science Policy Office; ESA