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Multiphysics modeling and simulation drives innovation across industries and academia — as is evidenced by the many uses showcased in the technical papers and posters presented by engineers, researchers, and scientists at the COMSOL Conference each year.

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Numerical Modeling of Magnetic Field Emissions From am HDD Walkover Locating System

A. Jaganathan [1], J. Montoute [1],
[1] Louisiana Tech University, Ruston, LA, USA

In this paper, numerical modeling of the artificially induced magnetic field from a walk-over locator used to detect the drill head underground in Horizontal Directional Drilling (HDD) is presented. Numerical predictions are compared against the experimental data and closed-form ... Read More

How Finite Element Analysis Revolutionized a 100-Year Old Equation

K. Carlson [1], J. Arle [1], J. L. Shils [2], L. Mei [1],
[1] Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, MA, USA
[2] Rush Medical Center, Chicago, IL, USA

In 1901 Weiss proposed an equation predicting activation of nerve fibers by electrical stimulation, used in neuroscience and neuromodulation, which applies electric fields to modify nerve behavior in neurological disorders. Weiss’ equation is relative to geometry, electrode array, ... Read More

Genetic Algorithm for Geometry Optimization of Optical Antennas

R. Diaz de Leon [1], G. Gonzalez [1], A. G. Rodriguez [1], E. Flores [2], F. J. Gonzalez [1],
[1] Universidad Autonoma de SLP, San Luis Potosi, S.L.P., Mexico
[2] Instituto Tecnologico de SLP, San Luis Potosi, S.L.P., Mexico

A genetic algorithm was programmed in MATLAB® software and linked to the COMSOL Multiphysics® software with the COMSOL LiveLink™ for MATLAB® to optimize the geometry of an optical antenna (nanoantenna). The proposed computational model demonstrated that nanoantenna geometries does not ... Read More

Maximizing the Fatigue Crack Response in Surface Eddy Current Inspections of Aircraft Structures

C. Mandache [1], T. Theodoulidis [2],
[1] National Research Council Canada, Ottawa, ON, Canada
[2] University of Western Macedonia, Kozani, Western Macedonia, Greece

In-service detection of fatigue cracking in metallic aerospace structures relies on capable and efficient eddy current inspection procedures. For best results, inspections with surface scanning eddy current techniques are following rigorous procedures that indicate the instrument ... Read More

FEM Analysis and Optimization of Electro-Stimulating Implants for Bone Regeneration and Prevention of Bacterial Infection

T. Bender [1], J. Ziebart [2], T. J. Dauben [1], B. Kreikemeyer [3], R. Bader [2]
[1] Institute of Medical Microbiology, Virology and Hygiene, Rostock University Medical Center, Rostock, Germany; Research Laboratory for Biomechanics and Implant Technology, Department of Orthopedics, Rostock University Medical Center, Rostock, Germany
[2] Research Laboratory for Biomechanics and Implant Technology, Department of Orthopedics, Rostock University Medical Center, Rostock, Germany
[3] Institute of Medical Microbiology, Virology and Hygiene, Rostock University Medical Center, Rostock, Germany

The aim of this study is to investigate the influence of electro-magnetic stimulation on bone regeneration and the effect on bacterial infection. Electro-magnetic stimulation is a promising technique and a powerful tool for the enhancement of bone regeneration. To optimize the amplitude ... Read More

Simulation of Electro-Thermal Transients in Superconducting Accelerator Magnets

L. Bortot [1], M. Maciejewski [2], M. Prioli [1], B. Auchmann [3],
[1] CERN, Geneva, Switzerland
[2] CERN, Geneva, Switzerland; Lodz University of Technology, Lodz, Poland
[3] CERN, Geneva, Switzerland; Paul Scherrer Institute, Zurich, Switzerland

The paper presents the application of COMSOL Multiphysics® software to the modelling of superconducting accelerator magnets. A 2D magneto-thermal model is developed, using an equivalent magnetization formulation to take into account the eddy-currents’ effects. Due to the model ... Read More

Thermal Analysis on Module Level in an Automotive Battery Package

Z. Wu [1], H. Kemper [1],
[1] Energy Storage Systems, FH Aachen, Aachen, Germany

Vehicles with battery as energy storage fascinate more and more people. Meanwhile, more questions are surfaced – How to ensure a safe operation of the battery package? How long could the cycle life of a battery package reach? Can a battery package be operated in any environmental ... Read More

Novel Automated Software System for Arcing Simulation in Spacecraft On-Board Electronics

V. Kozhevnikov [1], V. Karaban [2], D. Kosov [2], A. Kozyrev [1], A. Batrakov [1], N. Semeniuk [1], L. Zjulkova [1]
[1] Institute of High Current Electronics, Tomsk, Russia
[2] Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia

In our project, we propose an innovative software solution to the problem of electrical arcing risk prediction in high-voltage on-board electronic equipment intended for long-term self-contained use, e.g. in spacecraft conditions. It completely based on so-called “decomposition” approach ... Read More

Transient Simulation of an Electrochemical Machining Process for Stamping and Extrusion Dies

M. Penzel [1], M. Hackert-Oschätzchen [2], M. Kreißig [1], M. Kowalick [1], M. Zinecker [1], A. Schubert [1], G. Meichsner [3],
[1] Professorship Micromanufacturing Technology, Technische Universität Chemnitz, Chemnitz, Germany
[2] Professorship Micromanufacturing Technology, Technische Universität Chemnitz, Chemnitz, Germany; Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany
[3] Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany

Precise electrochemical machining (PEM) is a non-conventional machining technology, based on anodic dissolution of metallic work-pieces. In this study an additional extension of the precise electrochemical machining with a precise angle-controlled cylinder positioning is aimed. Due to ... Read More

An App for Calculating the Electric Field outside Electrical Installations

N. Lavesson [1],
[1] ABB Corporate Research, Västerås, Sweden

This paper describes the implementation of an app for calculating low frequency electric fields outside electrical installations. The app is based on a 2D parametric geometry chosen in such a way that it approximates a large class of electrical installations, which consist of a tower or ... Read More

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