J. P. Pothin , N. Gosselin ,
 Nexter Systems, France
DEMETER is a magnetic field replicator. This system is designed to deceive anti tank mines. Numerical simulation (using COMSOL Multiphysics® software) allows to indicate DEMETER's performance in various environment and various configurations. The study of the magnetic field provide also an overview of mine-clearing tools disturbances on the field generated by DEMETER.
S. Zahid , P. R. Hobson ,
 Brunel University London, London, United Kingdom
Vacuum phototriodes (VPT) have been used as photodetectors for many years in particle physics experiments. For example, they were used in the OPAL experiment at LEP and are currently used in the endcap Electromagnetic Calorimeter of the CMS experiment, at CERN’s Large Hadron Collider. Existing VPTs are fast, low-gain devices that are able to operate in strong magnetic fields at angles up to ...
AGH University of Science and Technology
This elaboration presents a pre-study on automatic rotor construction for the flywheel energy storage system dedicated to operate in the levitation mode. The optimization profile model is used as a basic profile source. The 3D flywheel shape is generated on the base of obtained profiles. Eigenfrequencies are calculated to validate the operation on rigid mode. A steel and aluminum based ...
Y. He, R. Nilssen
Department of Electric Power Engineering, Norwegian University of Science and Technology, Trondheim, Norway
Ferrofluids have been successfully used in the seals for rotary shafts, but few studies focus on the reciprocating motion seals. Since the completely different operational regimes, previous experiences on the rotary motions could not be directly applied on the cases for reciprocating shafts. In this study, we present a simplified model to describe the process that a shaft linearly moving in a ...
ABB, Ladenburg, Germany
Medium- and high-voltage circuit breakers and reclosers are important grid protection devices that connect different grid sources and increase the network/grid reliability. Currently, there is a clear need of increasing the numbers of switching operation. Therefore, the optimal design of these devices becomes of extreme importance in order to enable the required switching capabilities. This ...
B. A. Marmo , M. P. Snaith ,
 Xi Engineering Consultants, Edinburgh, United Kingdom
An electrostatic headphone includes many interrelated design elements that affect the frequency response of the headphone and the users listening experience. Xi Engineering Consultants (XI) partnered with Warwick Audio Technologies (WAT) to investigate the complex behavior of one-side electrostatic speakers. Xi developed a GUI that helped WAT engineers optimize their speaker using virtual tools ...
A. Jaganathan , J. Montoute ,
 Louisiana Tech University, Ruston, LA, USA
In this paper, numerical modeling of the artificially induced magnetic field from a walk-over locator used to detect the drill head underground in Horizontal Directional Drilling (HDD) is presented. Numerical predictions are compared against the experimental data and closed-form solutions to validate the model. After validations, the numerical model is used to investigate a situation that could ...
J. M. Russell ,
 Emeritus Professor, Florida Institute of Technology, Melbourne, FL, USA
This talk is for intermediate-level users of COMSOL who, like the present author, are relative newcomers to numerical simulation but have a strong grounding in Hydrodynamics or related areas of Mathematical Physics. Most turn-key Computational Fluid Dynamics packages, including COMSOL’s, are well suited to the simulation of internal flows where the user has in mind a definite inlet, outlet, and ...
Middle East Technical University
In this study, a detailed finite element model coupling the motion dynamics and electromagnetics of a diaphragm based MEMS vibration energy harvester is presented. The energy harvester converts low frequency vibrations to high frequency response by magnetic actuation of a diaphragm carrying coils. AC/DC, Solid Mechanics and Moving Mesh (ALE) modules are coupled together in one 3-D model to ...
M. Wei, S. Grossman, J. Speck
Institute of Electrical Power Systems and High Voltage Engineering, Technische Universität Dresden, Dresden, Germany
The job of designing end-winding corona protection (ECP) system is one of the very important and complex phases for insulation configuration of high voltage rotating machines. This complexity stems on one hand from the highly nonlinear characteristics of the ECP material and on the other hand from the coupled multiphysics phenomena of the involved performance evaluation. Simulation based ECP ...