R. Schlanbusch, S. A. Halvorsen, S. Shinkevich, D. Gómez
Teknova, Kristiansand, Norway
Department of Applied Mathematics & ITMATI, Universidade de Santiago de Compostela, La Coruña, Spain
The problem under investigation is electrical scale-up of a generic metallurgical process for primary metal production through resistive heating of slag by electric current, typically supplied by an AC three-phase system. Maxwell’s equations are analyzed revealing that the properties of the solution is determined by the parameter (L/δ)^2, where L is the linear size of the system and δ is the ...
Biofluid-Structural Interaction in Abdominal Aortic Aneurysm for Predicting Timeline to Rupture: The Effect of Hypertension and Aorta Wall Material Properties - new
K. Cluff, H. Mehraein, G. Jayakumar
Bioengineering, Wichita State University, Wichita, KS, USA
Industrial & Manufacturing Engineering, Wichita State University, Wichita, KS, USA
An abdominal aortic aneurysm (AAA) is a bulge formed in the large blood vessels that supply blood to the abdomen, pelvis, and legs. A fluid structure interaction model was developed in a 3D aortic aneurysm model, which was constructed from abdominal CT scan images. Combining medical imaging and computational fluid dynamics (CFD) in a time dependent study allowed the determination of wall ...
S. Aissani, L. Guendouz
CRM2, Institut Jean Barriol, University of Lorraine, Vandoeuvre-lès-Nancy, France
Mesures et architectures électroniques, University of Lorraine, Vandoeuvre-lès-Nancy, France
Nuclear Quadrupole Resonance (RQN) is a radio frequency (RF) spectroscopic technique that is used to detect quadrupole nuclei such as Nitrogen-14. NQR was found to be a good candidate for detecting narcotics, explosives and medicines . However, due to its low sensitivity the use of NQR is still limited. One way to increase the sensitivity is to improve the RF coil by means of a better RF ...
Study of the Process, Design, and Operating Parameters Effect on the Efficiency of the Process Mill - new
A. K. Farouk
Department of Mathematics & Natural Science, University of Stavanger, Sandnes, Rogaland, Norway
This study is to investigate the velocity pattern and the velocity magnitude of the cuttings that is being processed in the process mill as a result of the rotating hammers. The process mill consists of a horizontal cylindrical shell equipped with renewable liners and rotating hammers for milling of drill cuttings. An F.E model of the process mill was constructed using dimensions similar to ...
AC Electrothermal Characterization of Doped-Si Heated Microcantilevers Using Frequency-Domain Finite Element Analysis - new
K. Park, S. Hamian, A. M. Gauffreau, T. Walsh
Mechanical Engineering Department, University of Utah, Salt Lake City, UT, USA
Department of Mechanical, Industrial & Systems Engineering, University of Rhode Island, Kingston, RI, USA
This work investigates the frequency-dependent electrothermal behaviors of freestanding doped-silicon heated microcantilever probes operating under the periodic (ac) Joule heating. The transient heat conduction equation for each component (i.e., the low-doped heater region, the high-doped constriction region, and the high-doped leg region) is solved using the general heat transfer module for DC ...
T. J. Berger ,
 Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, Troy, NY, USA
The XENON Dark Matter Experiment utilizes ultra-pure xenon (Xe) as a target for particle interaction in the effort to detect dark matter particles. To measure the purity of Xe, a gas purity monitor (GPM) is being developed which drifts electrons through Xe gas to detect impurities that contribute to charge attenuation. An axially-symmetric model is used to simulate the electric field generated ...
李晓南 , 刘国强 ,
利用惯性力学和电磁学，研究了一个金属小车沿着磁铁铺就的轨道做减速直线运动。其中，小车也可以看成是携带等量的磁铁剩磁，且沿着铁磁轨道减速运动。通过赋予小车一个初速度，例如100 m/s，然后再根据实际情况、赋予它一个特征密度，即小车有了一定的质量。当认为小车沿水平方向的轨道减速运动，忽略重力、空气阻力等其他一些影响因素时，小车将只受电磁的洛伦兹力的作用，而逐渐减速到零。 利用最新版的 COMSOL Multiphysics®，建模过程中，主要用到了“磁场和电场(mef)”和“全局常微分和微分代数方程(ge)”接口，涉及到的动力学和电磁学方程为 dv/dt=F/m F ⃗=∫_(V_vehicle)▒〖(J_induced ) ⃗×B ⃗dv〗 J_(i_y)=σ(v_z∙B_x-v_x∙B_z ) v 为小车即时速度，F 为洛伦兹力，J 为感应产生的涡流，v 为速度，B 为外加磁场 ...
M. Maitra , H. B. Nemade , S. Kundu ,
 Indian Institute of Technology Guwahati, Guwahati, Assam, India
The objective of this paper is to show the simulation of a piezoelectric thin film device and its application as a sensor. Piezoelectric aluminum nitride thin film clamped at two ends is simulated using COMSOL Multiphysics software. The device consists of the piezoelectric thin film suspended on a cavity etched on a silicon substrate. Two metal electrodes are placed at the two fixed sides of the ...
D. Fabris , B. Henriques , J. C. M. Souza , J. Guimarães , M. Fredel 
 Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
 Universidade Federal de Santa Catarina, Blumenau, SC, Brazil; and CMEMS-Uminho, Universidade do Minho, Guimarães, Portugal
Dental restorations can be made by different materials bonded together, which grant good mechanical resistance and aesthetic at the same time. In order to evaluate the behavior of dental restorations in the oral environment, a test, called thermocycler, is used, which simulates the temperature changes and the chemical environment of the mouth. The objective of this work is to evaluate thermal ...