Ruslan Khalilov

Institute of Continuous Media Mechanics of the Ural Branch of Russian Academy of Science · Physical hydrodynamic

The paper studies the transient nonequilibrium modes of a vortex flow in a thin liquid metal layer. The flow is caused by electromagnetic forces generated by the interaction of an alternating magnetic field and electric current induced by it. The most stable variant of the flow, in the form of two large-scale vortices, is studied. In this instance,...

This paper studies a method of stirring liquid metal by the action of rotating magnetic fields using two ring inductors placed next to each other. These inductors generate magnetic fields rotating in opposite directions. The aim of this study is numerical investigation of the generated fluid flow and its impact on the homogenization of a two-phase...

A promising method for determining the flow rate of a liquid metal coolant is the temperature correlation method (TCM) since it does not require calibration. However, being indirect, it has a number of limitations to be carefully studied. A magnetic obstacle is used as a temperature pulsation generator. The paper presents the results of a numerical...

We studied a numerical model describing electromagnetic forces that arise in a cylindrical volume of metal placed in the working area of a newly designed electromagnetic stirrer. The combined use of a complex-shaped inductor with a set of 6x6 coils and a power management system makes it possible to generate magnetic fields of almost any topology (i...

Рассмотрены магнитогидродинамические процессы, возникающие в коаксиальном канале индукционного электромагнитного насоса для перекачивания жидкого металла. Целью исследования является разработка нового метода оперативного измерения физических свойств жидкометаллического теплоносителя, который применяется на атомных электростанциях на быстрых нейтрон...

In order to precisely determine the magnesium level in a titanium reduction retort by inductive methods, many interfering influences have to be considered. By using a look-up-table method, the magnesium level can be reliably identified by taking into account the interfering effects of the titanium sponge rings forming at the walls with their unknow...

The influence of the cell inclination on the heat transport and large-scale circulation in liquid metal convection - Volume 884 - Lukas Zwirner, Ruslan Khalilov, Ilya Kolesnichenko, Andrey Mamykin, Sergei Mandrykin, Alexander Pavlinov, Alexander Shestakov, Andrei Teimurazov, Peter Frick, Olga Shishkina

The process of the transit flow generation in the magnetohydrodynamic channel of the pump is investigated. Its design provides for the variation of the flow-rate of the liquid metal without changing the current in the channel. The pressure in the pump channel creates by an electromagnetic force through the interaction of a longitudinal electric cur...

The electromagnetic velocity sensor of Ricou and Vives with permanent magnet is well known. The probe is difficult to use at industrial conditions like metallurgy or nuclear power plants close to the Curie temperature. This article describes a reliable technique to provide controlled magnetic field distribution at the measurement area, generated by...

Induction methods of localization the electrically conductive media were implemented experimentally. Local and integral techniques are considered. Relations were represented between of the local level probe (LLP) signal, its position and the frequency of alternating current. The dependencies of the integral level probe (ILP) signal on the frequency...

Inclined turbulent thermal convection by large Rayleigh numbers in extremely small-Prandtl-number fluids is studied based on results of both, measurements and high-resolution numerical simulations. The Prandtl number $Pr\approx0.0093$ considered in the experiments and the Large-Eddy Simulations (LES) and $Pr=0.0094$ considered in the Direct Numeric...

The influence of a modulated traveling magnetic field on the process of crystallization of a liquid conducting medium is experimentally investigated. The crystallization process is carried out in a vertical cell with a constant temperature difference between the narrow walls of the layer. A traveling magnetic field produced by a linear inductor gen...

In agreement with a recent experimental study by Xi et. al. [1], we also observed the sloshing mode of the large scale circulation (LSC) in our experimental investigation of turbulent Rayleigh-Benard convection of liquid sodium in a cylindrical cell of aspect ratio one. The Rayleigh and Prandtl numbers vary within the range of (0.5 – 2.6)10⁷ and (8...

Contactless liquid metal stirring by traveling magnetic field (TMF) inductor is widely applied in modern metallurgy. The quality of stirring is an actual challenge. One solution to this problem is to complicate the TMF inductor supplying current form. In present work we study the influence of the current on the hydrodynamic characteristics of the f...

The inductive measurement of the magnesium level in a titanium reduction reactor is a challenging task because the state of the art measurement techniques are hampered by the formation of titanium sponge rings within the reactor. By distorting the magnetic field between excitation and sensor coils, which is used to determine the magnesium level, th...

The determination of the Magnesium level in a Titanium reduction retort by inductive methods is often hampered by the formation of Titanium sponge rings which disturb the propagation of electromagnetic signals between excitation and receiver coils. We present a new method for the reliable identification of the Magnesium level which explicitly takes...

The effect of inclination on the low Prandtl number turbulent convection in a cylinder of unit aspect ratio was studied experimentally. The working fluid was sodium (Prandtl number Pr=0.0094), the measurements were performed for a fixed Rayleigh number Ra=(1.47±0.03)×107, and the inclination angle varied from β=0∘ (the Rayleigh–Bénard convection, t...

Рассматривается несколько МГД-устройств, работающих в жидкометаллическом натриевом контуре. Объединяющая особенность этих устройств –цилиндрический канал диаметром 68 мм, а также взаимодействие потока жидкого натрия с магнитными полями. Первым устройством является линейный цилиндрический МГД-насос для перекачивания жидкого натрия в контуре. Следующ...

Turbulent convection of liquid sodium in a cylindrical cell, heated at one end face and cooled at the other, inclined to the vertical at angle 0 and π/4 is studied experimentally and numerically by solving the Oberbeck-Boussinesq equations with the LES (Large Eddy Simulation) approach for small-scale turbulence. The aspect ratio is one, i.e. cylind...

The characteristics of an oscillating vortex flow of liquid metal were studied experimentally using an ultrasound Doppler velocimeter (UDV). The flow was generated by a local alternating magnetic field induced in a rectangular thin cell filled with gallium eutectic. The influence of medium temperature change and stirring on the UDV measurements was...

The eddy current flowmeter for liquid metal passing through the cylindrical channel is studied experimentally and numerically. The alternating magnetic field is created by an annular-shape coil and resulting field is measured by two symmetric coils. The dependence of the signal on the magnetic field frequency was obtained for a solid duralumin cyli...

A convective flow of liquid sodium generated nearby a hot round in the upper solid end face of a vertical cylinder has been studied experimentally and numerically. A developed turbulent flow is observed in the upper part of the cylinder. Strong velocity pulsations penetrate in the bulk of the metal up to a distance of about the diameter of the cyli...

The paper present a liquid sodium flow measurement system developed and designed for the liquid sodium loop [1]. This system includes in fact three independent flowmeters combined in one single device. Two of these are based on electromagnetic (conduction and induction) methods, and one uses a thermocouple cross-correlation flow measurement method....

A two-loop sodium test facility equipped with independent flowrate and temperature control systems has been put into operation at the Institute of Continuous Media Mechanics (ICMM) in Perm, Russia. The facility is designed to study turbulent mixing in liquid sodium flows of various configurations and different temperatures. The schematic design con...

The paper present a liquid sodium flow measurement system developed and designed for the liquid sodium loop [1]. This system includes in fact three independent flowmeters combined in one single device. Two of these are based on electromagnetic (conduction and induction) methods, and one uses a thermocouple cross-correlation flow measurement method....

Turbulent convective heat transfer in a long closed cylindrical tube with L ≈ 20D (D = 96 mm is the diameter and L is the tube length) filled with liquid sodium, heated at one end face and cooled at the other, is studied experimentally for three different positions: vertical, inclined at 45 degrees to the vertical plane and horizontal. The Rayleigh...

The operation experience of sodium fast reactor shows that during design-basis validation of pipelines and equipment it is necessary to take into account the sodium free convection in the enclosures. The paper presents the results of experimental study of free convection of liquid sodium in a long thermo-insulated cylinder with the end heat supply...

Turbulent convective heat transfer in a closed cylinder with aspect ratio L = 5D (D is the diameter and L is the cylinder length) filled with liquid sodium, heated at one end face and cooled at the other, is studied experimentally for three different positions: vertical, inclined at 45 degrees to the vertical and horizontal. The Rayleigh number, wh...

The paper provides background information on the design, development and operation of the annular induction travelling field pump for liquid sodium. A mathematical model of the device has been developed and verified. Effects of various parameters on the capacity of the pump were investigated. Simulation results were used to design and manufacture a...

The paper is concerned with the development of an MHD pump supplied with liquid metal electrodes. The proposed pump has the advantages of small size, small weight, simple design, lower power consumption and lower production costs. The absence of contact resistance between the electrode and the liquid metal makes it possible to obtain the steady sta...

The interaction of a liquid sodium flow in a bronze toroidal channel with an alternating magnetic field is considered. The magnetic field travelling along the channel is generated by an external system of coils. The process of magnetic field transfer by the flow of liquid metal is investigated experimentally by measuring the induced phase shifts wi...

The process of gallium alloy crystallization under stirring conditions is studied experimentally. A stirring flow is induced by an external rotating magnetic field generated by an MHD stirrer containing a cylindrical vessel with a gallium alloy. The evolution of the liquid-solid interface is studied by the UDV technique. The position of the interfa...

In this work, we consider an MHD pump generating a travelling magnetic field. It consists of six C-shaped inductors located one after another. A flat channel for pumping liquid metal is placed in the gap between the inductors. The cores are fed by the alternating current from a three-phase source and are connected in such a way as to provide the ge...

This paper presents a design of the spiral winding-free MHD pump engineered to transport liquid metals and alloys. A distinctive feature of this pump is that it has a spiral channel. By changing the number of turns in the channel and by modifying the channel cross-section, the pressure drop-flow characteristics can be varied over a wide range. To g...

We study the operation of the MHD stirrer in a cylindrical channel with a liquid metal based on the results of experiments and 3D numerical simulations. The investigations described in this paper are focused on hydrodynamic and crystallizing processes. Experimental investigations of the velocity field and its oscillations in a cylindrical crucible...

We study the operation of the MHD stirrer in a cylindrical channel with a liquid metal based on the results of experiments and 3D numerical simulations. The investigations described in this paper are focused on electromagnetic and hydrodynamic processes. The distribution of the magnetic field components throughout the cylindrical channel inside the...

The hydrodynamic characteristics of Y- and Ψ-shaped channel of the MHD pump are studied both experimentally and numerically. Calculation of magnetic and hydrodynamic fields in MHD channels is performed. The pressure drop - flowrate characteristics of these fields are determined. The obtained data are compared with the results of physical experiment...

The hydrodynamic characteristics of Y- and Psi-shaped channel of the MHD pump are studied both experimentally and numerically. Calculation of magnetic and hydrodynamic fields in MHD channels is performed. The pressure drop - flowrate characteristics of these fields are determined. The obtained data are compared with the results of physical experime...

Motions of liquid gallium alloy generated in a two-directional cylindrical MHD-stirrer are examined. Results of experimental investigations of the flow and magnetic field topologies are presented. Measurements were taken using a dual-axis potential probe and induction coils. Experimental results for time-averaged flows are compared to theoretical r...

This paper considers three variants of MHD induction pumps: a centrifugal magnetovortex pump, a transformer type pump with magnetic asymmetry and a travelling field pump. All these pumps have a flat channel placed between the poles of one or several ferromagnetic cores inducing an alternating magnetic field directed normally to the channel plane. T...

A mathematical model for determining the level of molten metal from the magnetic-field distribution in the vicinity of a conducting cylinder is proposed. The results of numerical modeling are supported by laboratory checks. The method has successfully passed a number of tests under production workshop conditions.

This paper deals with the study of a vortical flow in a plane layer of a conducting fluid driven by an alternating magnetic field normal to the layer and nonuniform in the layer plane. The layer with either a free or a solid upper boundary is considered. The topology of the vortical flow is assumed to be dependent on the geometry of the region subj...