Shape Optimization of Electric and Magnetic System using Level Set Technique and Sensitivity Analysis
Y. Sun Kim, A. Weddemann, J. Jadidian, S. Khushrushahi, and M. Zahn
Dept. of Electrical Engineering and Computer Science
The classical optimization method has been applied to many design problems for electromagnetic systems. One of its major difficulties is related to meshing problems arising from shape modifications. In order to circumvent these kinds of technical difficulties with moving mesh problems, several researches have tried to formulate shape optimization with fixed mesh analyses based on fixed grid ...
P. Barthelemy, and
Visualization Sciences Group, Burlington, MA, USA
Stanford University, Palo Alto, CA, USA
Understanding the rock structure at nano to micro scale is of growing importance in geology, oil and gas, and hydrology. New approaches that relies on a variety of high resolution 3D imaging techniques offered tremendous potential. These new approaches, in the meanwhile, introduce significant new challenges. Starting from digital imaging data, the paper introduces an image-to-simulation ...
Pryor Knowledge Systems, Inc.
Bloomfield Hills, MI
Electroplating is a vital technology widely employed for many technological applications ranging from decorative or anti-corrosion coatings to high precision nanotechnology passive electromagnetic cloaking devices. This 2D Axisymmetric Electroplating Model demonstrates one of the modeling methodologies that can be used to calculate the transient generation of a coating thickness of a deposited ...
S. Boukhris, M. Denton, and Y. Feng
Computational Bioengineering and Control Lab, University of Texas at San Antonio, San Antonio, TX
TASC, Inc. Biomedical Sciences and Technology Dept., Ft. Sam Houston, TX
The use of lasers in the military and everyday life is growing each year. The purpose of the current research is to take full advantage of this new spatially-resolved thermal data to construct a mathematical and numerical model for laser-induced damage using COMSOL Multiphysics. The microthermography data were extracted for vertical and horizontal lines through the laser-exposed area of cell ...
J-W. Braxton Bragg, J. Dickens, A. Neuber, and K. Long
Center for Pulsed Power and Power Electronics, Texas Tech University, Lubbock, TX
Dept. of Mathematics, Texas Tech University, Lubbock, TX
Ferrimagnetic based, coaxial nonlinear transmission lines (NLTLs) provide a means to generate sub-nanosecond risetime pulses (from nano-second input pulses) or megawatt level high power microwave oscillations, depending on the geometry, material, and external bias fields. This investigation uses the commercially available, finite element solver COMSOL to provide insight into pulse behavior. ...
Assessment of Spatial Variably Saturated Flow by Irrigation Moisture Sensors in 2-Dimensions using the COMSOL Multiphysics 4.1
A. Boluwade, and C. A. Madramootoo
Bioresources Engineering, McGill University
Ste. Anne De Bellevue, QC
This paper reports on the application of COMSOL Multiphysics’ Richard\'s Equation Interface in the assessment of irrigation moisture sensors for detecting the level of water saturation in a spatial variably saturated soil. The Richard\'s Equation (in COMSOL) provides the interface which automates the van Genuchten equation. A hypothetical soil column 4m by 4m was set up with seven irrigation ...
Bechtel Marine Propulsion Corporation
This report discusses an analysis of gas foil thrust bearings used in the Integrated Systems Test (IST) turbomachinery. Gas foil thrust bearing failures occurred in IST turbomachinery during operational testing at Barber-Nichols Inc. This paper presents preliminary results of a study to assess, by means of multiphysics analyses, the performance characteristics of the foil thrust bearing over ...
C. Buffinton, P. Rogerson, and D. Ebenstein
The effects of calcifications on arterial wall stress have been largely ignored, in part because the material properties of the calcified areas were taken to be the same as the fibrous plaque, and in part because they are often assumed to have a stabilizing influence. Recent measurements suggest that their stiffness should be more similar to bone. A computational model is indicated for this ...
A. Roday, and P. Nicosia
Garlock Sealing Technologies
Sintering is an important step in the manufacturing of polytetrafluoroethylene (PTFE) billets. The challenge in heating large billets stems from the inherent low thermal conductivity of PTFE. Existing literature suggests determining maximum heating rate experimentally using recommended guidelines. This paper uses COMSOL to aid in optimizing the temperature profile required for a particular ...
L. Graber, J. Kvitkovic, T. Chiocchio, M. Steurer, S. Pamidi, and A. Usoskin
Center for Advanced Power Systems, Florida State University, Tallahassee, FL
Bruker Energy & Supercon Technologies Inc., Billerica, MA
Finite element models, which include the shielding characteristics of superconductors are often complex and would currently not allow us to study 3D models of devices of complex geometry such as fault current limiters. We propose instead a model based on variable electric conductivity, which is suitable to simulate magnetic field characteristics of inductive superconducting fault current ...