This paper presents the new experimental facility LIMMCAST which was designed for modeling fluid flow and transport processes in continuous casting of steel. The operates at temperatures 200–400°C by using low melting point alloy SnBi. main parameters facility, including dimensions test sections, will be given. resultant possibilities with respect to investigations tundish, submerged entry nozzle, mould discussed. Over period assembling commissioning small-scale set-up Mini-LIMMCAST employed...

The contactless inductive flow tomography (CIFT) aims at reconstructing the velocity field in electrically conducting melts from externally measured induced magnetic fields. One of its possible applications is reconstruction continuous casting process. In this paper, we apply method to a small model (containing approximately 1.4 l eutectic alloy GaInSn) mould for thin slab casting. It shown that structure, general, and jet position intensity, particular, can be reliably determined data using...

The electrical current through an incompressible, viscous and resistive liquid conductor produces azimuthal magnetic field that becomes unstable when the corresponding Hartmann number exceeds a critical value of order 20. This Tayler instability (TI), which is not only discussed as key ingredient nonlinear stellar dynamo model (Tayler–Spruit dynamo), but also limiting factor for maximum size large metal batteries, was recently observed experimentally in column (Seilmayer et al 2012 Phys....

Monitoring of the steel flow through submerged entry nozzle (SEN) during continuous casting presents a challenge for instrumentation system because high temperature environment and limited access to in between tundish mould. Electromagnetic inductance tomography (EMT) an attractive tool visualize profile within SEN. In this paper, we investigate various regimes over range stopper positions gas volume rates on model nozzle. A scaled (approximately 10:1) experimental rig consisting tundish,...

The measurement of flow properties liquid metals, such as rate, structure and gas distribution, is a challenging task due to the opaqueness, high temperatures (e. g. 1500 °C for steel or silicon) corrosiveness those fluids. In this paper, short review about recent developments techniques in framework Helmholtz Alliance Liquid Metal Technologies (LIMTECH) presented. It focuses on development contactless inductive exploiting electrical conductivity melts. These include tomography (CIFT), which...

In this paper we report on an experimental study focusing the manifestation and dynamics of large-scale circulation (LSC) in turbulent liquid metal convection. The experiments are performed inside a cylinder aspect ratio $\varGamma = 0.5$ filled with ternary alloy GaInSn, which has Prandtl number $Pr 0.03$ . flow structures classified characterized at Rayleigh numbers ${Ra} 9.33 \times 10^6, 5.31 10^7$ $6.02 10^8$ by means contactless inductive tomography enables full reconstruction...

The influence of a swirling flow inside the submerged entry nozzle on structure and stability liquid metal in physical model slab casting mould are investigated. For visualisation flow, contactless inductive tomography (CIFT) is applied. As expected desired, leads to stronger upward fluid motion along walls. At same time, however, oscillatory character becomes stronger. These features obtained with CIFT shown be reasonable agreement independent measurements using ultrasonic Doppler...

Contactless inductive flow tomography (CIFT) is a measurement technique allowing for visualization of the global in electrically conducting fluids. The method based on principle induction by motion: very weak induced magnetic fields arise from fluid motion under influence primary excitation field and can be measured precisely outside volume. structure causative reconstructed values solving according linear inverse problem using appropriate regularization methods. concurrent use more than one...

The contactless inductive flow tomography (CIFT) is a measurement technique that allows reconstructing the of electrically conducting fluids by measuring flow-induced perturbations one or various applied magnetic fields and solving underlying inverse problem. One most promising application CIFT continuous casting steel, for which online monitoring in mould would be highly desirable. In previous experiments at small-scale model casting, has been to industrially relevant problems, including...

The detection of bubbles in liquid metals is important for many technical applications. opaqueness and the high temperature set demands on measurement system. electrical conductivity metal can be exploited contactless methods based electromagnetic induction. We will present a system which consists one excitation coil pickup opposite sides pipe. With this sensor we were able to detect sodium flow inside stainless steel pipe column filled with Gallium alloy.

The goal of contactless inductive flow tomography (CIFT) is the velocity reconstruction in electrically conducting melts which are used many metallurgical and crystal growth applications. In this paper, we discuss some recent methodological improv

The measurement of gas-liquid metal two phase flow is a challenging task due to the opaqueness and high temperatures.For instance, during continuous casting steel distribution argon gas liquid in submerged entry nozzle interest, since it influences quality produced steel.In this paper we present results feasibility study for applying electrical capacitance tomography (ECT) detect outer surface stream.The are basis development new contactless sensor which should be able shape jet using ECT...

The contactless inductive flow tomography (CIFT) aims at reconstructing the velocity field of electrically conducting fluids, with special focus on applications in metallurgy and crystal growth technologies. method relies induction secondary magnetic fields if moving fluid is exposed to a primary field. theoretical foundation delineated, some early experiments reconstruction three-dimensional cylinder are sketched. Then, recent efforts apply CIFT various model problems connection continuous...

Lorentz force velocimetry is a non-invasive velocity measurement technique for electrical conductive liquids like molten steel. In this technique, the metal flow interacts with static magnetic field generating eddy currents which, in turn, produce flow-braking forces within fluid. These are proportional to conductivity and of melt. Due Newton's third law, counter same magnitude acts on source applied which our case permanent magnet. paper we will present new multicomponent sensor local...

Abstract A new experimental facility has been designed and constructed which represents a 1:5.25 model of an industrial 185 t steel ladle. This setup is intended for systematic investigations complex liquid metal multiphase flows created by gas blowing from the bottom. Two tons Sn-40 wt pct Bi alloy are employed as working fluid, its thermophysical properties very similar to those steel. The relatively low operating temperatures ( T ~ 200 °C) compared real process allow use powerful...

The flow structure in the mold of a continuous caster has great influence on quality produced steel. Conventional measurement techniques are prevented by high temperature liquid For physical model casting process using low‐melting point metal, we present combined measurements contactless inductive tomography (CIFT), and conductivity distribution submerged entry nozzle (SEN) mutual inductance tomography. In addition, summarize experiments with magnetic stirrer around SEN its effects mold....

Electrolysis stands as a pivotal method for environmentally sustainable hydrogen production. However, the formation of gas bubbles during electrolysis process poses significant challenges by impeding electrochemical reactions, diminishing cell efficiency, and dramatically increasing energy consumption. Furthermore, inherent difficulty in detecting these arises from non-transparency wall cells. Additionally, induce alterations conductivity electrolyte, leading to corresponding fluctuations...