Finite Element Modeling of Conventional and Pulsed Eddy Current Probes for CANDU® Fuel Channel Inspection - new
M. Luloff, J. Morelli, T. W. Krause
Department of Physics, Engineering Physics & Astronomy, Queen's University, Kingston, ON, Canada
Department of Physics, Royal Military College of Canada, Kingston, ON, Canada
A pulsed Eddy Current (EC) probe, using the transient response to a stepped voltage is being developed for in-reactor inspection of CANDU® fuel channels. Pulsed EC has the advantage of generating a spectrum of discrete frequencies, allowing the simultaneous collection of data from a range of depths (i.e. takes advantage of multiple skin depths) that is unachievable by conventional EC, which ...
U. N. Mughal ,
 Narvik University College, Norway
This paper is a preliminary design study to develop a hybrid atmospheric icing sensor which have an adequate potential to detect an icing event, icing type and icing rate together with icing load. The physics to detect icing event and icing type have been numerically understood using Debye analytical model. Also the conductivity variations in the Debye model have been understood using modified ...
J. Lin ,
 Pitotech Co. Ltd., Changhua City, Taiwan
Common mode chokes are good EMI filters in electronic power systems . For such devices, values for their impedance are critical to their performances as noise filters. In this study, a two-step finite element approach is employed to study the impedance variations of a ferrite-core common mode choke operating at high frequencies (0.1 to 10 MHz) . Extraction of inter-winding parasitic ...
J. Osorio Moreno, M. Pullia, C. Priano
Fondazione CNAO, Pavia, Italy
Resistive magnets are one of the principal components of ion medical accelerator systems used in heavy ion cancer treatment. To fulfill medical requirements, like the size of irradiation field and an uniform dose distribution, some magnets of the transport beam line may require large aperture and a large region where the magnetic field is within specifications (good field region). After a ...
A. Frey , I. Kuehne , R. Großmann , T. Frommelt , L. Fromme , T. Koch ,
 Augsburg University of Applied Sciences, Augsburg, Bavaria, Germany
 Heilbronn University, Heilbronn, Germany
 Bielefeld University of Applied Sciences, Bielefeld, Germany
 COMSOL Multiphysics GmbH, Göttingen, Germany
Today, 90 percent of automation sensors are binary proximity detectors. Besides capacitive and optical types, inductive proximity sensors are essential for industrial applications. Compared to their mechanical counterparts, they offer almost ideal properties as contact-free and wear-free working principle as well as high switching frequency and precision. Inductive sensors cover a detection ...
M. Ahmadi 
 Faculty of Engineering Technology, University of Twente, Enschede, The Netherlands
Electrostatic precipitation is an extremely efficient way of filtering fine particles from the airstream. Electrostatic precipitators (ESPs) can control airborne emission without significantly slowing down the rate of flow, because of the low pressure drop across this type of filters. A computational model was developed for the simulation of ESP operation and the parameters of interest were ...
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 ...
3D Electro-Thermal Study for Reliability of Automotive Power Vertical MOSFET Using COMSOL Multiphysics®
T. Azoui, S. Verde, J.B. Sauveplane, and P. Tounsi
LAAS-CNRS, Toulouse, France
Department of Electronics and Telecommunications Engineering, University of Naples Federico II, Naples, Italy
In this paper 3D electro-thermal FE Model using COMSOL Multiphysics® software of power vertical MOSFET used in the automotive industry is presented. This model is used to analyze the effects of bonding wire lift off defect and to study the influence of metallization thickness and number of bonding wires on the electrical and thermal behavior of the power device. The maximum temperature ...
S. Khushrushahi, and M. Zahn
Massachusetts Institute of Technology, Cambridge, MA, USA
A fully filled sphere of ferrofluid has constant demagnetizing factors in all three Cartesian directions such that when subjected to a uniform external rotating magnetic field the internal field is also uniform, and ultrasound measurements give no observable flow. Non-uniform magnetic fields or a non-uniform distribution of susceptibility are necessary conditions for ferrofluid spin-up flows in ...
Royal Institute of Technology
School of Engineering
Electromagnetic Engineering Lab
There is a considerable world-wide interest among lightning protection engineers and designers on the improvement of the standard procedures to assess the location of the most vulnerable places on complex structures to be struck by lightning flashes. This paper presents the implementation of the Self-consistent Lightning Interception Model in Matlab by using the COMSOL Multiphysics 3.5 ...