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.
P. Keutelian, A. Krishnamurthy, G. Chen, B. Ulmen, G.H. Miley
University of Illinois at Urbana-Champaign, Champaign, IL, USA
HIIPER is an experimental space propulsion device using a helicon and an IEC as a plasma generation and acceleration stage, respectively. There is an experiment in progress, but for true rapid iteration and to model the performance of the engine, COMSOL is a strong candidate for fulfilling these roles and continuing with the project until its production phase. The simulation is built with very ...
S. Sahu, R. P .Bhattachryay, E. R. Kumar
Institute for Plasma Research, Bhat, Gandhinagar, Gujarat, India.
There is limited option for non-intrusive flow measurement of liquid metals at high temperature. Liquid metal flowing in a conduit along with the transverse magnetic field induces emf in the liquid metal. The emf developed; which has linear dependency on flow velocity; can be used for flow velocity estimation. In case of conducting conduit the emf can be measured at the conduit wall. The main ...
Dynamic Simulation of a Coaxial Magnetic Gear Using Global ODE's and the Rotating Machinery, Magnetic Interface
M. Ostroushko , W. Zhang , W. M. Rucker ,
 Institute of Theory of Electrical Engineering, University of Stuttgart, Stuttgart, Germany
The coaxial magnetic gear is a good alternative to classic mechanical gears. The magnetic gear has high mechanical durability, overload protection and lower noise, than a mechanical gear [1,2]. A static model of a magnetic gear [3,4] is used for simulation of the magnetic fields and mechanical forces in the steady state. For the dynamic characteristic of the magnetic gear, i.e. a run-up, slowing ...
AGH University of Science and Technology, Kraków, Poland
Introduction: The dual electromagnet configuration of Active Magnetic Levitation system (AML) where the electromagnets are locate opposite to each other, constitutes and single axis of the Active Magnetic Bearing. The same configuration can be used to test the single electromagnet AML controller. A single electromagnet AML was modeled and simulated with COMSOL Multiphysics. The modeling and ...
Using the Electrical Field Analysis for Assessment of the Influence of Paper Insulation on Discharge Initiation in Oil
P. Rozga, D. Hantsz
Technical University of Lodz, Lodz, Poland
Conclusions about the influence of paper insulation on the electrical discharge initiation in mineral oil may be drawn on the basis of experimental studies. However, in some cases, these conclusions may be supported by electrical field analysis. Determination of maximum values of electrical field stress in the vicinity of model electrode setups may bring a new information about initiation ...
S. Satti, M. Baghini
Indian Institute of Technology Bombay, Mumbai, Maharashtra, India
As a part of a lab-on-chip-device, more often it is required to measure dielectric constant of the fluid. For this purpose it is necessary to develop a sensor whose size is compatible with microfluidic channel. The work, presented in this paper, studies effect of the parameters influencing sensitivity of such a sensor and ultimately optimizes these dimensions to maximize the sensitivity. We ...
3D Multiphysics Modeling of Bulk High-Temperature Superconductors for Use as Trapped Field Magnets - new
M. Ainslie, J. Zou, D. Hu, D. Cardwell
Department of Engineering, University of Cambridge, Cambridge, UK
The authors are currently investigating the use of bulk high temperature superconductors as trapped field magnets (TFMs) in order to increase the electrical and magnetic loading of an axial gap, trapped flux-type superconducting electric machine. In electric machines, the use of superconducting materials can lead to increases in efficiency, as well as power density, which results in reductions ...
N. Smith, K. Lees, A. Gregory, R. Clarke
The National Physical Laboratory, Teddington, Middlesex, UK
The current drive to go beyond the state of the art in novel near field scanning microwave microscope (NSMM) metrology at the micro scale, to make them capable of traceable measurements on functional materials, has led to the development of a finite element model of the probe of a resonant near field scanning microwave microscope (RNSMM). The model has been validated against an analytical ...
P. Das, A. Reza, A. K. Sikdar, R. Bogi, A. Nandi
Variable Energy Cyclotron Centre, Kolkata, West Bengal, India
Jalpaiguri Government Engineering College, Jalpaiguri, West Bengal, India
Jadavpur University, Kolkata, West Bengal, India
Penning ion trap is a device used for three-dimensional confinement of ions for high precision nuclear and atomic physics studies. In a Penning ion trap, superposition of a strong homogeneous magnetic field and a weak quadrupole electric field confines the ions in a very small region. The uniformity and stability of magnetic field determines the confinement duration. An electromagnet has been ...