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Ici vous trouverez les présentations issues des Conférences COMSOL à travers le monde. Réalisées par des utilisateurs de COMSOL Multiphysics, ces présentations explorent tous les domaines actuels d'innovation. Les applications couvrent pratiquement tous les secteurs industriels et impliquent des phénomènes électriques, mécaniques, fluidiques et chimiques. Utilisez la recherche rapide pour trouver les présentations les plus intéressantes dans votre domaine d'intérêt.

Consultez les proceedings de la Conference COMSOL 2024

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Boston 2024

Munich 2023

Simulation of a Vortex Ring: Dealing with the Unbounded, Doubly Connected Domain

J. M. Russell [1],
[1] Emeritus Professor, Florida Institute of Technology, Melbourne, FL, USA

This talk is for intermediate-level users of COMSOL who, like the present author, are relative newcomers to numerical simulation but have a strong grounding in Hydrodynamics or related areas of Mathematical Physics. Most turn-key Computational Fluid Dynamics packages, including COMSOL ... En savoir plus

Electromagnetic Modeling of Field Emitter Cathodes Inside an L-Band RF Gun at Fermilab Using COMSOL®

H. Panuganti [1,2,3], P. Piot [1,3],
[1] Northern Illinois Center for Accelerator and Detector Development (NICADD), Northern Illinois University, DeKalb, IL USA
[2] Department of Mechanical Engineering, Northern Illinois University, DeKalb, IL, USA
[3] Fermi National Accelerator Laboratory (FNAL), Batavia, IL, USA

Field-emitter (FE) electron sources offer significant advantages over photocathode and thermionic sources due to their ability to be operated without the need for an auxiliary laser system or a heating source. While FE cathodes have been traditionally used in DC environments, we explore ... En savoir plus

Numerical Modeling of Resistive Switching in a RRAM Device

D. Niraula [1], V. Karpov [1],
[1] University of Toledo, Toledo, OH, USA

A new nonvolatile memory device based on its resistance state has emerged known as resistive random access memory (RRAM). It operates by switching between the high resistance and low resistance states which can be interpreted as logical 0 and 1 variables. Understanding the resistive ... En savoir plus

Simulation of Silicon Nanodevices at Cryogenic Temperatures for Quantum Computing

F. A. Mohiyaddin [1], F. G. Curtis [1], M. N. Ericson [1], T. S. Humble [1],
[1] Quantum Computing Institute, Oak Ridge National Laboratory, Oak Ridge, TN, USA

Electronic devices operating at cryogenic temperatures are critical for a wide variety of applications including quantum computing, space, medicine and fundamental research [1]. The design of these devices requires accurate physical modeling of the electric fields, currents, conduction ... En savoir plus

Archie's Law in Sandy Microstructures

P. Mohammadmoradi [1], A. Kantzas [1],
[1] University of Calgary, Calgary, AB, Canada

COMSOL Multiphysics® is used to simulate electric currents in pore-level unconsolidated and consolidated packings of spherical grains. In a nutshell 1) Predefined particle size distribution curves and porosities are used to reconstruct unconsolidated packings; 2) A modified image ... En savoir plus

Multiphysics Modeling of the Graphite Electrode Joint in Electric Arc Furnaces for Steel Recycling

N. May [1], M. Waldner [2],
[1] GrafTech International Holdings, Inc., Independence, OH, USA
[2] Case Western Reserve University, Cleveland, OH, USA

Electric Arc Furnaces (EAF) use graphite electrodes to strike an arc to melt scrap steel, recycling it for further use. These graphite electrodes oxidize and are consumed over time. To maintain operation new electrodes are attached to others via a joint of complex geometry and fed ... En savoir plus

Magnetic Fields Generated by Magnets Moving Along Epicyclic Paths

J. Lin [1], P. Tsui [1],
[1] Pitotech Co. Ltd., Changhua City, Taiwan

Knowing the magnetic fields generated by an assembly of magnets in epicyclic motions are important in designing magnetrons for physical vapor deposition (PVD) applications [1]. Epicyclic paths would mean all magnets are rotating in an orbital (central) axis, on top of which each magnet ... En savoir plus

Calculating Impedance of a Common Mode Choke in High Frequency Regime

J. Lin [1],
[1] Pitotech Co. Ltd., Changhua City, Taiwan

Common mode chokes are good EMI filters in electronic power systems [1]. For such devices, values for their impedance are critical to their performances as noise filters. In this study, a two-step finite element approach is employed to study the impedance variations of a ferrite-core ... En savoir plus

Modeled Electroformed MEMS Variable Capacitors for Cobalt Iron Alloy Magnetostriction Measurements

E. Langlois [1], P. Finnegan [1], J. Pillars [1], T. Monson [1], C. J. Pearce [1], C. St. Johns [1], M. Ballance [1]
[1] Sandia National Laboratories, Albuquerque, NM, USA

Electroplated CoFe alloys demonstrating Joule magnetostriction (i.e., a large change in material shape induced by an applied magnetic field) have been recently developed for the creation of microfabricated magnetoelastic resonators for tagging applications. This development requires a ... En savoir plus

Multiphysics Modeling of Heat Transfer During Fiber Drawing

K. Koppenhoefer [1], J. Thomas [1], L. Gritter [1], J. S. Crompton [1], T. Tower [2],
[1] AltaSim Technologies, Columbus, OH, USA
[2] Kimberly-Clark, Inc., Neenah, WI, USA

The process of cold drawing a fiber over rollers is analyzed in this work to predict the temperature rise due to the heat generated during plastic deformation of the fiber. Experimental measurements on prototypes indicated an unacceptable temperature rise of greater than 100 F requiring ... En savoir plus

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