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Voyez comment la modélisation et la simulation sont utilisées par les industries La modélisation et la simulation multiphysiques pilotent l'innovation dans tous les grands secteurs d'activité et dans le monde universitaire — comme en témoignent les nombreuses utilisations présentées dans des articles et des posters techniques présentés par des ingénieurs, chercheurs et scientifiques à la Conférence COMSOL chaque année. Inspirez-vous des récents proceedings réunis ci-dessous, ou, pour trouver les présentations les plus intéressantes dans votre domaine d'intérêt, utilisez la recherche rapide.

Consultez les proceedings de la Conference COMSOL 2024

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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 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

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

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

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

Simulation of Atmospheric Air Micro Plasma Jet for Biomedical Applications

J. S. Crompton [1], L. Gritter [1], K. Koppenhoefer [1],
[1] AltaSim Technologies, Columbus, OH, USA

Small-scale plasma jets in atmospheric air can produce regions of highly reactive chemistry coincident with temperatures approaching room temperature allowing his type of cold plasma jet to be used for decontamination of surfaces and sterilization of living tissue. In the device under ... En savoir plus

MRI Birdcage RF Coil Resonance with Uncertainty and Relative Error Convergence Rates

J. T. Fong [1],
[1] National Institute of Standards and Technology, Gaithersburg, MD, USA

In a magnetic resonance imaging (MRI) system, it is necessary to excite the nuclei of a patient into coherent precession for imaging. This requires a coupling between the nuclei and a source of radio frequency (RF) power using a transmitter. To receive a meaningful signal, we also need ... En savoir plus

Validation of COMSOL®-Based Performance Predictions of Bi-2212 Round Wire Prototype Coils

E. Bosque [1], U. Trociewitz [1],
[1] Applied Superconductivity Center - National High Magnetic Field Laboratory, Tallahassee, FL, USA

A prominent technological goal at the National High Magnetic Field Laboratory (NHMFL) involves developing high temperature superconductors (HTS) for use in nuclear magnetic resonance (NMR) at fields above 31 T. Work presented here demonstrates the extensive use of finite element ... En savoir plus

Electrical and Bubbly Flow Modeling of a Molten Salt Electrolysis Cell

A. Oury [1], P. Namy [1], A. M. Martinez [2] , K. S. Olsen [2], A. Solheim [2] ,
[1] SIMTEC, Grenoble, France
[2] SINTEF Materials and Chemistry, Trondheim, Norway

A laboratory-scale electrolysis cell for the recovery of metals is simulated with COMSOL Multiphysics® software. Two models are implemented: an electrical model simulating the current density (reaction rate) distribution at the electrodes and a laminar bubbly flow model which solves for ... En savoir plus

The Nonlocal Optical Response of Gold Nanowire

Changyin Ji [1], Qingfan Shi [1], Yongyou Zhang [1], Ning Zheng [1], Liangsheng Li [2],
[1] Beijing Institute of Technology, School of Physics, Beijing, China
[2] Science and Technology on Electromagnetic Scattering Laboratory, Beijing, China

Recently, the researchers usually use the hydrodynamic Drude model (HDM)to investigate the nonlocal optical response of metallic nanostructure. The advantage of the HDM is easy to implement numerical calculation for larger and more complex shaped nanoplasmonic structures. For the HDM, it ... En savoir plus

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