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Papers & Presentations

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Showing results 1 - 20 of 102

Numerical Analysis, PDE, FEA

	Adaptive Finite Element Method for Image Processing An adaptive finite element strategy is employed to solve the Perona-Malik model as modified by Catté, Lions, Morel and Coll for image processing by (often highly) nonlinear diffusion. FEMLAB® and MATLAB® are used to implement the... COMSOL Conference 2005, Boston Bazan, C.1, Blomgren, P.2 1 Computational Science Research Center, San Diego State University 2 Department of Mathematics & Statistics, San Diego State University
	A General Method for Solving Equations - The Dynamical Functional Particle Method Given any equation L(u)=0, e.g. a partial differential equation, it can be considered to be the stationary solution of a time dependent equation (in fact, time need only to be fictitious time not real time). Our approach is to choose the... COMSOL Conference 2010, Paris M. Gulliksson, and S. Edvardsson Mid Sweden University, Sundsvall, Sweden
	Analysis of a Three-phase Transformer Using COMSOL Multiphysics and a Virtual Reality Environment The simulation software COMSOL Multiphysics is applied to the numerical com-putation of the magnetic fields of a three-phase transformer. A three-dimensional model of the geometrical configuration is created with the help of the CAD tools... COMSOL Conference 2011, Stuttgart A.Buchau, and W. M. Rucker Institut für Theorie der Elektrotechnik Universität Stuttgart Stuttgart, Germany
	An Investigation of Mesh Moving Methods for Simulating the Deformation of Incompressible Fluid Bodies In this article we apply a finite element method for approximating the geometrical deformation of a two dimensional incompressible fluid body the flow velocity of which is not constrained along its top boundary. As a pressure force is... COMSOL Conference 2009, Milan M. Edstorp¹ ¹ Production Technology Centre, University West, Trollhättan, Sweden
	Application of System Identification Methods to Implement COMSOL Models into External Simulation Environments Full coupling of distributed parameter models, like COMSOL, with the lumped models often lead to very time-consuming simulation duration times. In order to improve the speed of the simulations, the idea of using system identification... COMSOL Conference 2009, Milan A.W.M. van Schijndel¹ and M. Gontikaki¹ ¹ Eindhoven University of Technology, Eindhoven, The Netherlands
	Ausbreitung von Populationen und Genetischer Information in Landschaften Kontinuierliche populationsdynamische Modelle lassen sich durch Systeme von gewöhnlichen Differentialgleichungen darstellen. Die räumliche Ausbreitung wird durch parabolische partielle Differentialgleichungen beschrieben, im einfachsten... COMSOL Conference 2005, Boston Richter, O. Institut für Geoökologie der Technischen Universität, Braunschweig
	Benchmark of COMSOL vs. ROXIE Codes for the Calculation of a Particle Accelerator Quadrupole The field quality requirements of most particle accelerator magnets are very tight and, therefore, very precise simulations are needed to accurately calculate these devices. CERN\'s ROXIE code is widely used as a reference software to... COMSOL Conference 2011, Stuttgart I. Rodriguez, and J. L. Munoz ESS Bilbao Bilbao, Spain
	Boundary Element Technique in Petroleum Reservoir Simulation Petroleum reservoir simulation is a process of modeling the complex physical phenomena inside a reservoir. This study presents an application of an analytical based numerical scheme so called the Boundary Element Method (DRBEM). It is... COMSOL Conference 2011, Boston M. Liu, and G. Zhao University of Regina Regina, SK Canada
	Chaotic Behavior of the Airflow in a Ventilated Room Chaotic systems may lead to instability, extreme sensitivity and performance reduction. Therefore it is unwanted in many cases. Due to these undesirable characteristics of chaos in practical systems, it is important to recognize such a... COMSOL Conference 2009, Milan A.W.M. van Schijndel¹ ¹ Eindhoven University of Technology, Eindhoven, The Netherlands
	Comparison between COMSOL and RFSP-IST for a 2-D Benchmark Problem RFSP-IST (Reactor Fueling Simulation Program) is a computer code used for the full-core neutronics design and analysis of CANDU® reactors. RFSP-IST calculates the static flux and power distributions in the core by solving the neutron... COMSOL Conference 2008, Hannover G. Gomes Atomic Energy of Canada Limited, Mississauga, Ontario, Canada
	Computational Building Physics using Comsol: Research, Education and Practice Jos van Schijndel completed his MSc in 1998 at the Department of Applied Physics at the Eindhoven University of Technology (TUe). In 2007 he obtained a PhD degree at the TUe on integrated heat, air and moisture modeling. Currently, he is... COMSOL Conference 2011, Stuttgart J. van Schijndel Eindhoven University of Technology, Eindhoven, The Netherlands
	Computation of Space-Time Patterns via ALE Methods Partial differential equations which exhibit solutions that are spatial temporal patterns are often found in biological and chemical systems, e.g. when describing pattern formation in reaction-diffusion systems.Special classes of such... COMSOL Conference 2007, Grenoble V. Thümmler¹, and A. Weddemann² ¹Department of Mathematics, Bielefeld University, Bielefeld, Germany ²Department of Physics, Bielefeld University, Bielefeld, Germany
	Computation of Three-Dimensional Electromagnetic Fields for an Augmented Reality Environment Augmented reality is predestined for visualization of electromagnetic fields in air or inside transparent matter. Real existing objects are studied and invisible electromagnetic fields are added as virtual objects. Hence, experts as well... COMSOL Conference 2008, Hannover A. Buchau, and W. Rucker Institut für Theorie der Elektrotechnik, Universität Stuttgart, Germany
	COMSOL-Based Nuclear Reactor Kinetics Studies at the HFIR The computational ability to accurately predict the dynamic behavior of a nuclear reactor core in response to reactivity-induced perturbations is an important subject in reactor physics. Space-time and point kinetics methodologies were... COMSOL Conference 2011, Boston D. Chandler¹ , J. Freels² , R. Primm III³ , and G. Maldonado¹ ¹ Department of Nuclear Engineering, University of Tennessee, Knoxville, TN ² Research Reactors Division, Oak Ridge National Laboratory, Oak Ridge, TN ³ Primm Consulting, LLC., Knoxville, TN
	COMSOL API Based Toolbox for the Mixed-Level Modeling of Squeeze-Film Damping in MEMS: Simulation and Experimental Validation We present an easy-to-use toolbox for the automated generation of reduced-order mixed-level models for the evaluation of squeeze-film damping in microelectromechanical systems. The toolbox is programmed in JAVA and heavily exploits the... COMSOL Conference 2011, Stuttgart M. Niessner¹ , G. Schrag¹ , J. Iannacci² , and G. Wachutka¹ ¹ Institute for Physics of Electrotechnology, Munich University of Technology, Munich, Germany ² MEMS Research Unit, Fondazione Bruno Kessler, Povo di Trento, Italy
	ComsolGrid – A Framework For Performing Large-Scale Parameter Studies Using COMSOL Multiphysics and Berkeley Open Infrastructure for Network Computing (BOINC) BOINC (Berkeley Open Infrastructure for Network Computing) is an open-source framework for solving large-scale and complex computational problems by means of public resource computing (PRC). In contrast to massive parallel computing, PRC... COMSOL Conference 2010, Paris C.B. Ries, and C. Schröder University of Applied Sciences Bielefeld, Germany
	COMSOL Implementation of Valet-Fert Model for CPP GMR devices The Giant Magneto Resistance (GMR) effect is a quantum mechanical effect which can be observed in systems consisting of thin alternating ferromagnetic and non-ferromagnetic layers. Simulation using COMSOL allows the evaluation of the... COMSOL Conference 2009, Boston T. Xu¹ , C.K.A. Mewes¹ , S. Gupta² , and W.H. Butler¹ ¹ Department of Physics and Astronomy and Center for Materials for Information Technology, University of Alabama, Tuscaloosa, Alabama, USA ² Department of Metallurgical and Materials Engineering and Center for Materials for Information Technology, University of Alabama, Tuscaloosa, Alabama, USA
	COMSOL Models Combined with Experiments to Teach Compressible Fluid Concepts Chemical engineering students often have misconceptions with compressible fluids. Models for air flow in smooth and rough pipes, an in-line air heater, and a rotameter were used together with experimental measurements to teach students... COMSOL Conference 2011, Boston W. Clark Worcester Polytechnic Institute Worcester, MA
	Conducting Finite Element Convergence Studies Using COMSOL 4.0 We will show how to carry out convergence studies of the FEM error on a sequence of progressively finer meshes in COMSOL Multiphysics on the example of Lagrange elements of varying polynomial degrees, which will also bring out the benefit... COMSOL Conference 2010, Boston M.K. Gobbert, and D.W. Trott University of Maryland, Baltimore, MD, USA
	Control of Systems Modeled by COMSOL Multiphysics^® as Distributed Parameter Systems In systems and control theory dynamical systems described by partial differential equations are known as distributed parameter systems. So for modeling and dynamical analysis of distributed parameter systems wide possibilities are offered... COMSOL Conference 2009, Milan G. Hulkó¹ , C. Belavý¹ , P. Bucek¹ , K. Ondrejkovic¹ , and P. Zajícek¹ ¹ Institute of Automation, Measurement and Applied Informatics of Slovak University of Technology, Bratislava, Slovak Republic

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Numerical Analysis, PDE, FEA