F. Mercier, D. Chaussende, J.M. Dedulle[1,2] and J. Lefebure
Laboratoire des Matériaux et du Génie Physique (LMGP), Grenoble INP - CNRS, France
IRIS Technologies, Grenoble, France
Despite its real advantages compare to seeded sublimation growth, SiC solution growth has never given convincing results. The difficulty of stabilizing the growth front, and thus avoiding any polycrystal formation results from a poor description and understanding of the coupled phenomena that occur in the crucible. This paper addresses the coupled electromagnetism, heat transfer and fluid ...
COMSOL Multiphysics Modelling for Measurement Device of Electrical Resistivity in Laboratory Test Cell
C. Rémi, M. Bergeron, and S. Moreau
Bioreactor landfill is based on a homogeneous distribution of the moisture content to increase waste biodegradation. Most of studies have shown that Electrical Resistivity Tomography (ERT) can be a suitable method to study water content variation (2D and 3D). ERT is influenced by many physical parameters and no single relationship with volumetric water content was yet established for Municipal ...
Optimizing Performance of Equipment for Thermostimulation of Muscle Tissue using COMSOL Multiphysics
J. Kocbach, K. Folgerø, L. Mohn, O. Brix
Christian Michelsen Research, Bergen, Norway
Luzmon Norway, Bergen, Norway
Michelsen Medical, Bergen, Norway
The design challenge for thermostimulation equipment is to get a combination of high electric field strength and high temperature within the muscle tissue without causing pain or skin burns. In the present work, COMSOL Multiphysics is used to simulate the temperature distribution and electric field distribution within body tissue for varying body composition and varying design parameters of the ...
S. Roy, G. Konar
Power Engineering Department, Jadavpur University, Kolkata, West Bengal, India
Energy storage is an essential component for hybrid power system using non-conventional energy resources. Batteries, compressed air energy storage, pumped hydro plants etc. have been developed for storage. However, these have demerits like losses involved in energy conversion and time delay. Superconducting Magnetic Energy Storage (SMES) can be a good alternative as it stores electrical energy ...
S. Musa and M. Sadiku
College of Engineering, Prairie View A&M University, Prairie View, TX, USA
Due to the complexity of electromagnetic modeling, researchers and scientists always look for development of accurate and fast methods to extract the parameters of electronic interconnects and package structures. In this paper, we illustrate modeling of multiconductor interconnects in multilayered dielectric media using COMSOL Multiphysics and the finite element method. We specifically ...
O. Nemitz, and T. Schmitte
Salzgitter Mannesmann Forschung GmbH, Duisburg, Germany
In the inspection of steel products with respect to flaws a magnetic flux leakage (MFL) test procedure can be applied. In this procedure a “horseshoe” shaped yoke is used, whose legs are wrapped with coils through which an alternate current with a high frequency (3 kHz) is flowing. Hereby a thin magnetic field is induced near the surface of the test object which leaks from the material if a flaw ...
王 松 , , 唐小金 
 军械工程学院静电与电磁防护研究所, 石家庄，河北，中国
 北京卫星环境工程研究所, 北京，中国
摘要：在太空高能带电粒子作用下，航天器上存在绝缘介质深层充电的危险。介质内沉积电荷导致局部出现强电场（达到107V/m），有可能造成介质击穿放电。一方面，充电过程与介质电导率密切相关，而电导率受温度影响显著，另一方面，介质中的通电导体发热会影响介质的局部温度，于是有必要综合考虑介质中电场与热场的耦合变化过程。对此，我们建立了考虑电场与热场耦合变化的介质深层充电模型，并采用 COMSOL Multiphysics® 软件，实现了数值求解。结果表明，在一定的空间辐射环境下，考虑热场是十分重要的，热导率会对充电结果产生不可忽视的影响。该模型有利于多因素作用下的航天器介质深层充电评估计算。 1. 引言： 近些年，卫星充放电效应得到了广泛关注和研究[1, 2]。太空高能电子会射入航天器绝缘介质中，因为该介质极低电导率（10-15S/m量级），使得内部沉积电荷难以泄放 ...
S. Barth, and S. Zimmermann
Drägerwerk AG & Co. KGaA, Lübeck, Germany
Ion mobility spectrometry provides fast detection of very low concentrations of chemical substances. Simple instrumentation combined with high sensitivity and high selectivity are the advantages of this technique. One well established field of application is the detection of hazardous compounds in air, such as chemical warfare agents, explosives and pollutants. A numerical model based on finite ...
T. Furukawa, H. Tanaka, H. Itoh, H. Fukumoto, M. Ohchi
Saga University, Saga City, Saga, Japan
Chiba Institute of Technology
In transient analyses of electromagnetic fields with moving media, it is difficult to grasp the phenomena theoretically in the same manner of the convective heat diffusion since the treatment of the coupled problem with the field and dynamics must be necessary. In this presentation, we illustrate the dynamic magnetic flux patterns in the electric guitar pickup, where the string will move over ...
P. H. Nguyen , C. Rathje , G. J. Hornig , V. Jelic , C. Ropers , F. A. Hegmann ,
 University of Alberta, Edmonton, AB, Canada
 4th Physical Institute, University of Göttingen, Göttingen, Germany
Probing ultrafast processes over subpicosecond and picosecond time scales provides fundamental insight into the nature of materials. We have experimentally demonstrated terahertz (THz)-pulse-induced tunneling in a scanning tunneling microscope (THz-STM) to image surfaces with simultaneous nanometer spatial resolution and subpicosecond time resolution . However, the exact mechanism by which ...