M. Alsharif, P. Wallace, D. Hepburn, C. Zhou
Department of Physics, Faculty of Arts, Sebha University, Sebha, Libya
School of Engineering & Computing, Glasgow Caledonian University, Glasgow, United Kingdom
Introduction: Failure in cable insulation is generally preceded by a degradation phase that may last several years. A significant cause of cable system failures is the breakdown of electrical insulation between the electrodes. The operational stresses that occur in cable insulation which include thermal, mechanical and electrical effects will vary with time and can cause degradation due to the ...
M. Alshareef, A. Alshareef, V. Krishna, M. Kindy, T. Shazly
College of Medicine, Medical University of South Carolina, Charleston, SC, USA
Department of Biomedical Engineering, Duke University, Durham, NC, USA
Department of Neurosurgery, Medical University of South Carolina, Charleston, SC, USA
Department of Mechanical Engineering, University of South Carolina, Columbia, SC, USA
The incidence of spinal cord injury (SCI) in the US is approximately 12,000 individuals annually, due to various forms of trauma and disease. Diminished flow over a prolonged period of time can cause permanent spinal damage. We constructed a 3D finite element model of the spinal cord to examine the role of compressive loading on spinal blood flow. It was found that the type of forces on the ...
B. Lepers, S. Soldatov
Karlsruhe Institute of Technology, Institute for Pulsed Power and Microwave Technology, Karlsruhe, Germany
The use of high power microwave energy for ablation of contaminated concrete is a promising technique to speed up the dismantling of nuclear power plants. A coupled simulation using COMSOL Multiphysics® finite element software is performed by solving the electromagnetic wave equation at 2.45 GHz for a standard wave guide and a concrete block. The temperature field is obtained with the heat ...
M. Hassan, I. Gonin, T. Khabiboulline, V. Yakovlev
Fermi National Accelerator Laboratory, Batavia, IL, USA
Normal conducting cavities are typically used in the front end of proton accelerators to get the beam accelerated to velocities approximately a few tenths of the speed of light, where superconducting cavities can then be used to accelerate the beam to the speed of light. The warm part of a typical proton accelerator would contain a radio frequency quadrupole (RFQ) and several buncher cavities. ...
Sanidhya Painuli, Jayasankar Variyar
Vellore Institute Of Technology, School of Mechanical and Building Sciences, Vandalur Kelambakkam Road, Chennai, India
The study of interaction of fluid with matter assumes great significance for most engineering applications. The flow can be either turbulent or laminar, and different types of interactions arise out of these flow. In the introductory undergraduate course of fluid mechanics, a typical demonstration for these interactions is the Reynolds pipe flow experiment. Instabilities of various types like ...
AC Electroosmosis and Dielectrophoresis for Trapping Spherical Particles between Rectangular and Triangular Electrodes
S. Narayan, H. Francis, S. Ghonge, D.N. Prasad, A. Sethi, S. Banerjee, S. Kapur
Department of Physics, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Hyderabad, Andhra Pradesh, India
Department of Biological Sciences, Birla Institute of Technology and Science, Pilani, Hyderabad Campus, Hyderabad, Andhra Pradesh, India
We describe methods and results of simulations done for predicting behavior of particles in an aqueous solution under an applied AC electric field on electrodes of rectangular and triangular shapes. Here the two major effects which come into play are Dielectrophoresis and AC Electroosmosis. Two simulations have been presented, one for rectangular and one for triangular shaped electrodes. We have ...
O. Toscanelli, V. Colla
Scuola Superiore S. Anna, Pisa, Italy
The Large Eddy Simulation is an important method to simulate turbulent flow. It does not produce a closed system of equations, to achieve this it is necessary to model the not-closed terms. The deconvolution can be used for this purpose. In this study some numerical experiments on this topic are performed with COMSOL Multiphysics®. The main objectives are to find an efficient way to implement ...
K. Gräfe, J. Mrongowius, T.M. Buzug
Institute of Medical Engineering, University of Luebeck, Germany
For the MPI imaging process, superparamagnetic iron oxide nanoparticles (SPIONs) are used as tracer material. The particles are excited by a sinusoidally varying magnetic field. A field-free point (FFP) is generated by the superposition of two magnetic fields. The FFP is important for the imaging process, since only the SPIONs in the FFP and its direct neighbourhood are essential for the ...
EMIX, St Maurice La Souterraine, France
The optimisation of dimensions, materials choice of heaters in annealing furnaces are done with COMSOL Multiphysics® in 2D-axisymetry. Heat losses sources are identified and corrective actions can be taken in function of simulation results. A power saving of more than 50% is achieved thanks to simulations.
L. Z. Tong
Keisoku Engineering System Co., Ltd., Tokyo, Japan
The plasmas generated in water involve various physical phenomena such as flows agitated by bubbles, high electric fields for breakdown, discharges in bubbles with size variation, and so on. In this paper, studies have been made on the simulation of plasmas generated in bubbles with size variation. The species taken in account include electrons, three kinds of ions, and ten kinds of neutral ...