Персона: Тронин, Иван Владимирович
Загружается...
Email Address
Birth Date
Научные группы
Организационные подразделения
Организационная единица
Институт нанотехнологий в электронике, спинтронике и фотонике
Институт ИНТЭЛ занимается научной деятельностью и подготовкой специалистов в области исследования физических принципов, проектирования и разработки технологий создания компонентной базы электроники гражданского и специального назначения, а также построения современных приборов на её основе.
Наша основная цель – это создание и развитие научно-образовательного центра мирового уровня в области наноструктурных материалов и устройств электроники, спинтроники, фотоники, а также создание эффективной инновационной среды в области СВЧ-электронной и радиационно-стойкой компонентной базы, источников ТГц излучения, ионно-кластерных технологий материалов.
Статус
Фамилия
Тронин
Имя
Иван Владимирович
Имя
17 results
Результаты поиска
Теперь показываю 1 - 10 из 17
- ПубликацияТолько метаданныеOptimized Separative Power of Hyperspeed Iguassu Gas Centrifuge: Dependence on the Rotor Diameter and Velocity(2020) Bogovalov, S. V.; Borman, V. D.; Tronin, I. V.; Tronin, V. N.; Боговалов, Сергей Владимирович; Тронин, Иван ВладимировичThe dependence of the separative power of Iguassu gas centrifuges (GCs) on the rotor diameter and velocity of rotation V above 1000 m/s is investigated. The separative power is calculated exploring numerical modeling of the gas dynamics and diffusion of the binary mixture in a strong centrifugal field. The separative power is optimized on five internal parameters of the GC: pressure at the wall of the rotor, feed flux, temperature drop along the rotor wall, friction power of the waste scoop and radius of the baffle of the product chamber. Enrichment of the product flux does not depend on the velocity and diameter in the optimal regime of exploration. Growth of the separative power withis determined by growth of the feed flux with the velocity.
- ПубликацияТолько метаданные3-D Numerical Modeling of MHD Flows in an Aluminum Reduction Cell(2019) Pianykh, A. A.; Tkacheva, O. Y.; Radzyuk, A. Y.; Bogovalov, S. V.; Tronin, I. V.; Боговалов, Сергей Владимирович; Тронин, Иван Владимирович© 2019 IOP Publishing Ltd. All rights reserved.Three-dimensional numerical modeling of processes in an aluminum electrolytic cell at a current of 9 kA is performed. The model considers the nonlinear temperature dependence of all physical characteristics of materials. The specificity of the work is the inclusion in the model of the dynamics of the gas formed during the operation of the cell. The bubble motion, magnetic forces and heat convection essentially affect the overall dynamics of the electrolyte and metal. Calculations were carried out using the commercial software packages ANSYS CFX 18.2 and ANSYS Maxwell united with the aid of the user FORTRAN program.
- ПубликацияТолько метаданныеImpact of the vacuum core on the upper limit of the separative power of gas centrifuges(2021) Tronin, I. V.; Bogovalov, S. V.; Borman, V. D.; Tronin, V. N.; Тронин, Иван Владимирович; Боговалов, Сергей Владимирович© 2020 Elsevier LtdAccording to Dirac's equation the upper limit of the separative power of a gas centrifuge grows with rotation velocity V of the rotor as V4. This equation has two significant drawbacks. First, it was obtained assuming zero axial fluxes. Secondly, it does not take into account formation of a vacuum core near the axis of rotation. Its volume grows with the speed of rotation. Separation of isotopes does not occur in the vacuum core. In our work, we propose a new formulation of the problem of finding the upper limit of separative power without assumptions about zero axial flows and taking into account the limitation of the volume involved in the separation processes. According to our results, the upper limit of separative power increases with increasing speed much slower than the Dirac estimate, in proportion to V2.
- ПубликацияТолько метаданныеFast Spontaneous Transport of a Non-wetting Fluid in a Disordered Nanoporous Medium(2021) Borman, V.; Belogorlov, A.; Tronin, I.; Белогорлов, Антон Анатольевич; Тронин, Иван Владимирович© 2021, The Author(s), under exclusive licence to Springer Nature B.V.The experimental study of cooperative fast transport of non-wetting fluid in a disordered nanoporous medium is carried out in this work. New experimental data for simultaneous measurement of fluid flow, filled pore volume and pressure have been obtained. Dependencies of critical pressure and flow on porous particle mass and rapid compression energy have also been established. A new transport mechanism is proposed. The dynamics of fluid transport is represented as a process of evolution of two macroscopic growing modes of transport—spontaneous transport that occurs when new critical pressure of dynamic percolation transition and fluid transport caused by a constant critical pressure under impact compression of nanoporous particles suspension. Following the theory of critical dynamics of multiscale phenomena, a condition for the interaction of modes is proposed. Taking into account this interaction, rapid spontaneous transport is adjusted to the slow impact of impact compression, and the experimental dependencies should be described by the slow mode—impact compression. Such transport occurs simultaneously in two different time scales and is determined by the properties of spontaneous transport. The experimental dependencies are quantitatively described in the kinetic model. Under conditions of filled pores, the response of a fluid transport to impact is characterized by positive feedback.
- ПубликацияТолько метаданныеWave Isotope Separation in Super-Intense Centrifugal Fields(2024) Dzhulya, D. N.; Bogovalov, S. V.; Tronin, I. V.; Джуля, Денис Николаевич; Боговалов, Сергей Владимирович; Тронин, Иван Владимирович
- ПубликацияТолько метаданныеThree-dimensional modeling of the flow around the gas scoop under optimal working regime of the Iguassu gas centrifuge at the hyper fast rotation(2022) Bogovalov, S. V.; Borman, V. D.; Vasilyev, A. V.; Tronin, I. V.; Tronin, V. N.; Боговалов, Сергей Владимирович; Васильев, Александр Владиславович; Тронин, Иван Владимирович© 2022 Institute of Physics Publishing. All rights reserved.The problem of the gas withdrawal from an Iguassu gas centrifuge (GC) at the speed of rotation, over 1000 m/s is considered. We focus our attention on the problem of achieving of optimal waste flow and friction power of the gas scoop simultaneously. Calculations were carried out in a three-dimensional approximation for supersonic flow of UF6 around a stationary gas scoop taken as a Pitot tube with a diameter of 2 mm. Attempts to achieve the optimal working regime of GC for the selected particular gas scoop were not successful. On the basis of this results we conclude that the optimal gas withdrawal and creation of the optimal axial circulation can be problematic for the hyper-speed gas centrifuges.
- ПубликацияТолько метаданныеSimulation of a Hydrodynamic Stellar Wind from a Rapidly Rotating Star(2019) Bogovalov, S. V.; Romanikhin, S. M.; Tronin, I. V.; Боговалов, Сергей Владимирович; Тронин, Иван Владимирович© 2019, Pleiades Publishing, Inc. The mechanism for the formation of disk-like flows from rapidly rotating Be stars is not yet clear. An axisymmetric hydrodynamic stellar wind flow from a rapidly rotating star has been simulated numerically as a step in solving this problem. The change in the shape of the star as it rotates and the turbulence excited in the stellar wind at Reynolds numbers ∼10 9 −10 13 are taken into account. Calculations show the formation of a disk-like flow from the stellar surface at the equator, which expands into the polar regions due to a pressure gradient on scales of the order of the stellar radius. A poloidal velocity vortex is formed at high latitudes. No turbulence is excited near the equator within the simplest standard models and, therefore, no quasi-Keplerian disk-like flow emerges in the equatorial plane. A dependence of the total mass flux on the stellar rotation rate at various surface temperatures has been obtained.
- ПубликацияТолько метаданныеCooperative Transport of a Nonwetting Liquid in a Random System of Pores(2021) Borman, V. D.; Belogorlov, A. A.; Tronin, I. V.; Белогорлов, Антон Анатольевич; Тронин, Иван Владимирович© 2021, Pleiades Publishing, Inc.A new mechanism has been proposed for the cooperative transport of a nonwetting liquid in a nanoporous medium. The description of transport is based on the theory of critical dynamics of multiscale phenomena in atomic systems. Transport is described as a time-multiscale process of interaction of a fluctuating filling–escape mode, macroscopic spontaneous filling mode, and filling mode caused by the critical pressure of compression of a dynamic percolation transition. The model is based on the solution of the system of kinetic equations for the distribution function of accessible and filled pores, which allows calculating macroscopic quantities describing processes at various time scales. A case where macroscopic transport modes are developed simultaneously in two different time scales is considered. A “nanoscopic” model of filling of nanopores under the development of the spontaneous mode taking into account the conservation of the volume of the suspension at the equality of rates of development of the modes at different time scales has been proposed. The predicted time dependences of the flux and volume of filled pores correspond to dissipationless transport in the system of nanopores. Theoretical dependences describe known and new experimental data. Unusual dynamic properties correspond to the properties of systems with positive feedback.
- ПубликацияТолько метаданныеCumulative loading of the ion trap by laser ablation of thorium target in buffer gas(2020) Khabarova, K. Yu.; Kolachevsky, N. N.; Derevyashkin, S. P.; Borisyuk, P. V.; Strelkin, S. A.; Tkalya, E. V.; Tregubov, D. O.; Tronin, I. V.; Yakovlev, V. P.; Борисюк, Петр Викторович; Ткаля, Евгений Викторович; Трегубов, Дмитрий Олегович; Тронин, Иван Владимирович; Яковлев, Валерий Петрович© 2020 Astro Ltd Printed in the UKWe describe a method that allows accumulation in a Paul trap of a large number of ions obtained from multiple laser ablation pulses, and therefore solving the problem of a single pulse that usualy gives rise to final trapping of too few ions. The proposed method of the cumulative trap loading was based on interaction with a buffer gas that provided a friction force. The method was applied to triply charged thorium ions and trapped a total of 106 ions. Numerical analysis of the ion motion allowed the experimental parameters to be optimized for the most effective implementation of the technique.
- ПубликацияТолько метаданныеWaves in strong centrifugal field: dissipative gas(2019) Bogovalov, S. V.; Kislov, V. A.; Tronin, I. V.; Боговалов, Сергей Владимирович; Кислов, Владимир Александрович; Тронин, Иван ВладимировичIn the fast rotating gas (with the velocity typical for Iguassu gas centrifuge), three families of linear waves exist with different polarizations and law of dispersion. The energy of the waves is basically concentrated at the axis of rotation in the rarefied region. Therefore, these waves decay on the distance comparable with the wavelength. There is only one type of waves propagating strictly along the axis of rotation with the law of dispersion similar to ordinary acoustic waves. These waves are interested for the physics of gas centrifuges. The energy density of these waves concentrates at the wall of the rotor. These waves have weak damping due to the molecular viscosity and heat conductivity. The damping coefficient is determined for this type of waves by numerical calculations. Analytical approximations for the damping coefficient are defined as well. At the parameters typical for the Iguassu centrifuge, the damping is defined by interaction of the waves with the rotor wall.