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| 1 | Calibration of the Lorentz force flowmeter显示文摘 | Vitaly Minchenya Christian Karcher Yuri Kolesnikov André Thess | 2011 | Flow Measurement and Instrumentation2011，，3： | 2 |
| 2 | Numerical calibration of a Lorentz force flowmeter显示文摘 | Xiaodong Wang Yurii Kolesnikov André Thess | 2012 | Measurement Science and Technology2012，，4： | 1 |
| 3 | Application of the ultrasonic velocity profile method to the mapping of liquid metal flows under the influence of a non-uniform magnetic field显示文摘 | Oleg Andreev Yuri Kolesnikov André Thess | 2009 | Experiments in Fluids2009，，1： | 1 |
| 4 | Development of a Non-Contact Electromagnetic Surface Velocity Sensor for Molten Metal Flow显示文摘During continuous casting of steel,knowledge of both direction and magnitude of the velocity at the mold surface is of special interest.However,the surface is covered by a non-transparent layer of mold powder to prevent formation of slag.Thus,this meniscus flow cannot be registered by optical measurement techniques.Non-contact measurement methods are of interest.One of such non-invasive techniques is Lorentz_force_veloeimetry(LFV).It is based on measuring the electromagnetically induced force acting on a magnet system.In this paper we present a series of experiments that aim to demonstrate the feasibility of using two identical velocimeters,termed Time-of-Flight LFV(ToF LFV).Using ToF LFV the free-surface velocity may be purely determined by cross-correlating the two force signals delivered by the two force sensors.We have developed a special prototype of such a measuring device termed meniscus velocity sensor(MVS).It has been designed to record local surface velocities in high-temperature metal melts.At Ilmenau University of Technology,the method has been successfully tested using both solid body movement and Ga^(68%)In^(20%)Sn^(12%)as a low-melting model melt.In the present paper we apply this technique to the case of high-temperature metal melts.In more detail,we present test measurements under industry-relevant conditions using both Sn^(32%)pb^(52%)Bi at 210℃and molten steel at about 1700℃.These experiments were conducted at Key Laboratories on EPM at North Eastern University.The evaluation of the data shows that our prototype of MVS works well in producing reproducible signals of which surface velocity can be determined. | JIAN Dan-dan KARCHER Christian XU Xiu-jie DENG An-yuan WANG En-gang THESS André | 2012 | Journal of Iron and Steel Research(International)2012，19，S1： | 1 |
| 5 | Lorentz Force Velocimetry for Local Velocity Measurement显示文摘Standard flow measurement techniques fail for liquid metals due to their high temperatures,opaqueness and aggressiveness.However,recent developments in the measurement of volumetric fluxes of industrially relevant metal melts have been made.One of these methods,Lorentz Force Velocimetry(LFV)is based on the measurement of Lorentz forces generated when an electrically conducting fluid moves through a magnetic field.Our aim is to extend the working range of this method to the measurement of local flow velocities.To resolve local velocity fluctuations we reduce the size of the permanent magnet that produces the magnetic field.We use the fundamental setup of a square duct filled with the eutectic alloy GalnSn and having a cross-section of 5 cm by 5 cm.The magnet cube employed has an edge length of 1 cm.For this setup,we investigate both experimentally and numerically the interaction between the liquid metal flow and the non-uniform magnetic field.The results help in understanding the effect of flow dynamics on the total Lorentz force. | HEINICKE Christiane PULUGUNDLA Gautam TYMPEL Saskia BOECK Thomas KARCHER Christian SCHUMACHER Joerg RAHNEBERG Ilko FROEHLICH Thomas HILBRUNNER Falko THESS André | 2012 | Journal of Iron and Steel Research(International)2012，19，S1： | 0 |
| 6 | Investigation of Lorentz Force Velocimetry Using Electromagnets显示文摘The present work is an analysis on the ElectroMagnetic Lorentz Force Velocimetry(EM-LFV).This noncontact flow measurement technique is based on evaluating the Lorentz force generated by the interactions of an electrically conducting fluid with a localized magnetic field that is produced by electromagnets.Analytical and numerical calculations were carried out as a continuation of a previous work published by Thess et al.The objective is to establish the behavior of the Lorentz force as a function of the main geometric parameters considered in the studied geometry.Thus we present here the evolution of the Lorentz force induced in a translating cylindrical solid body and the coefficient of sensitivity of the flowmeter thanks to numerical simulations in respect with the main geometrical parameters of the problem. | SANTARA Fatoumata Bintou KARCHER Christian THESS Andre | 2012 | Journal of Iron and Steel Research(International)2012，19，S1： | 0 |
| 7 | Lorentz Force Sigmometry显示文摘The present communication reports a new technique for the contactless measurement of the specific electrical conductivity of a solid conductor or an electrically conducting fluid.We tenn the technique'Lorentz Force Sigmometry'where the neologism'Sigmometry'is derived fiom the Greek letter sigma,often used to denote the electrical conductivity.Lorentz force sigmometry(abbreviated LoFoS)is based on similar principles as the traditional eddy current testing but allows a larger penetration depth and is less sensitive to variations in the distance between the sensor and the sample.Here we formulate the theory of LoFoS and numerically compute the calibration function which is necessary for determining the unknown electrical conductivity from the measurement of a Lorentz force. | Mladen Zec Robert P.Uhlig Marek Ziolkowski Hartmut Brauer Andre Thess | 2012 | Journal of Iron and Steel Research(International)2012，19，S1： | 0 |
| 8 | Lorentz Force Velocimetry for Poorly Conducting Fluids-Development and Validation of a Novel Flow Rate Measurement Device显示文摘The paper demonstrated the feasibility of Lorentz Force Velocimetry for flow rate measurements of weakly conducting electrolytes using experimental results on salt water flow exposed to a permanent magnet system.This innovative flow measurement technique allows the non-contact determination of flow rates and relies on the interaction between a magnetic field and a moving conducting fluid.When an electrically conducting fluid moves through the magnetic field a Lorentz force is generated and acts on the measurement system.The present report provides an overview about the experimental setups and the first measurement results. | WEGFRASS Andre RESAGK Christian DIETHOLD Christian FRHLICH Thomas WERNER Michael HALBEDEL Bernd THESS Andre | 2012 | Journal of Iron and Steel Research(International)2012，19，S2： | 0 |
| 9 | Experimental Study and Numerical Visualization of Physical Fields of Electromagnetic Pumps Constructed on Permanent Magnets显示文摘Pumps with magnet systems constructed on permanent magnets and performed in two manners like two-disk type and the cylindrical rotor type are discussed.First,by way of example we consider the experimental study of disk pump with straight channel;second,we analyse the results of numerical simulation of cylindrical pump in two cases,namely,of straight and U-bend forms of pump channels.At a high speed of pump rotation when induced magnetic field becomes essential in as against the applied field,i.e.when the skin-effect takes place,the pump characteristics are analyzed.Visualization of physical fields of the pumps is reported. | KOLESNIKOV Yurii WANG Xiaodong THESS André | 2012 | Journal of Iron and Steel Research(International)2012，19，S2： | 0 |
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