F. Grilli, A. Lucarelli, G. Lüpke, T. Haugan, and P. Barnes
Ecole Polytechnique de Montréal, Montréal, QC, Canada
College of William and Mary, Williamsburg, VA, USA
Air Force Research Laboratory
We have developed a model for computing current and field distributions in multifilamentary superconducting thin films subjected to the simultaneous effects of transport ac current and applied dc field perpendicular to the sample. The model is implemented in COMSOL’s PDE module (general form) and solves Maxwell equations using a highly non-linear resistivity to describe the superconductor ...
P. Almeida, and M. Benilov
Departamento de Física. Universidade da Madeira, Portugal
It was suggested long ago that a theoretical model of a near-cathode region in a DC glow discharge admits multiple steady-state solutions describing different modes of currrent transfer. Even the most simple self-consistent models should admit such multiple solutions. In the present work, these solutions have been calculated for the first time with COMSOL Multiphysics.
D. Lahaye, D. Cvoric, S. de Haan, and J. Ferreira
Delft Institute of Applied Mathematics, Department of Electrical Engineering, Mathematics and Computer Sciences, TU Delft, The Netherlands
Electrical Power Processing Unit Department of Electrical Engineering, Mathematics and Computer Sciences, TU Delft, The Netherlands
Fault Current Limiters (FCLs) are expected to play an important role in the protection of future power systems due to the rising levels of the short-circuit currents. The inductive FCLs, comprising magnetic cores and one or more dc and ac windings, are particularly interesting because they inherently react on the fault. The so-called open-core FCL configuration employs only one magnetic core for ...
M. Manna, S. Marwaha, and C. Vasudeva
 Department of Electrical & Instrumentation Engineering, Sant Longowal Institute of Engineering and Technology , Longowal (Deemed University), Punjab, India
The majority of electrical machines are designed to produce the rotary motion, there by exploiting the blessing of circularity which man has enjoyed since the discovery of the wheel. Electromagnetic forces may also be employed to produce the linear motion resulting in linear motion electrical machines. The performance of a high speed LIM is severely degraded by "End Effects". The paper ...
Institut de recherche d'Hydro-Québec, Shawinigan, QC, Canada
This work presents the results of a 3D numerical magneto-hydrodynamic (MHD) simulation of an electromagnetic DC pump for liquid metal using a rectangular metal flow channel subjected to an externally imposed transversal inhomogeneous magnetic field. In this study. 3D numerical simulation based on the finite element method was carried out using the computer package COMSOL Multiphysics 3.5a. The ...
G. Zhang, Y. Zhao, J. Brcka, J. Faguet, E. Lee
Clemson University, Clemson, SC, USA
TEL U.S. Holdings, Inc., U.S. Technology Development Center, Austin, TX, USA
In our experiments with manipulating cells with DEP, we noted that some cells are constantly spining. By hypothesing that the cell spining is caused by the non-circular shape of the cell body and the off-centered location of its nucleus and that the rotation direction depends on the relative location of nucleus with respect to the electrical field, we found that the observed cell rotation was ...
O. Maloberti , O. Mansour 
 ESIEE Amiens, Amiens, France
At present, no 3D transient magnetic and electric fields formulation with strong eddy currents and high electric fields is available in the physical applications with COMSOL Multiphysics® software. However, some industrial products need such a tool, as it is the case for induction coils of pulsed magnetic technologies. The principle is to induce a force thanks to strong eddy currents induced by ...
J. Doody , P. Michael , R. Vieria , W. Beck , L. Zhou , J. Irby ,
 Massachusetts Institute of Technology - Plasma Science and Fusion Center, Cambridge, MA, USA
REBCO tapes belong to a class of high-temperature superconductors (HTS) that can be superconducting at liquid nitrogen temperatures (77K) as opposed to typical superconductors such as Nb3Sn which need to operate at liquid helium temperatures (4K). One important aspect of designing a super conducting coil is the ability to predict the critical current above which the conductor becomes ...
Massachusetts Institute of Technology, Cambridge, MA, USA
Markus Zahn received all his education at MIT, was a professor in the Department of Electrical Engineering at the University of Florida, Gainesville from 1970-1980, and then joined the MIT Department of Electrical Engineering and Computer Science faculty in 1980. He works in the Laboratory for Eelectromagnetic and Eelectronic Systems, in the MIT High Voltage Research Laboratory, is the Director ...
F. Dewarrat, L. Falco, A. Caduff, and M. Talary
Solianis Monitoring AG, Zürich, Switzerland
Impedance spectroscopy is a measurement technique that has been investigated in a wide variety of medical applications. An example is the measurement of the dielectric properties of the skin and underlying tissue using sensors placed in contact with human skin with capacitive fringing field electrodes. The aim of this work is to use finite element methods for optimizing the sensor design ...