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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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Development of Eddy Current Probe using FEM for Matte Level Detection in Pyrometallurgical Furnaces

A. Saleem [1], P. R. Underhill [1], D. Chataway [2], T. Gerritsen [2], A. Sadri [2], T. W. Krause [1],
[1] Department of Physics and Space Science, Royal Military College of Canada, Kingston, ON, Canada
[2] Hatch Ltd., Mississauga, ON, Canada

Pyrometallurgical furnaces are used to produce metals such as copper, nickel and platinum by the smelting process. During smelting, the undesired material components are separated from the desired metal resulting in the formation of a slag and matte/metal phase. The slag phase ... En savoir plus

不同Jc(T)关系的高温超导磁悬浮动态磁-热-力行为仿真研究

洪叶 [1], 郑珺 [2],
[1] 西南交通大学，成都市，四川省，中国
[2] 西南交通大学

当高温超导体内部出现温升时，其临界电流密度会发生改变。为探索这种温度效应对高温超导磁悬浮的影响，本文利用COMSOL软件，结合AC/DC 模块及传热模块，建立了悬浮于永磁轨道上方的高温超导块材二维实体模型，以磁轨的小幅振动模拟轨道不平顺。模型基于非连续性超导体E-J磁通流动与蠕动电磁本构关系，考虑不同温度-临界电流密度Jc(T)关系表达式，研究了高温超导块材在磁场不平顺激扰下的磁-热-力动态行为特性。并探究了不同Jc(T)关系对仿真模型求解效率及收敛性的影响。该工作将为高温超导磁悬浮磁-热效应及能量损耗问题的研究提供一定的仿真手段。 En savoir plus

Unbalanced Torque Signal Generation for Kinetic Energy Harvesters

L. Kurmann [1],
[1] University of Freiburg, IMTEK, Freiburg, Germany

The problem of an unbalanced mechanical torque signal generation using nonpolar repulsion techniques is studied. To achieve such an unbalanced torque, several stator and rotor geometries, consisting of nonlinear permanent magnet spring batteries are investigated. It can be shown that an ... En savoir plus

Smart Chest Belt for Cardiac Health Monitoring

M. Vijayalakshmi[1], R. C. Thiagarajan[1]
[1]ATOA Scientific Technologies Pvt. Ltd., Bengaluru, Karnataka, India

Conventional cardiac electrical signal monitoring and measurement techniques such as Electrocardiograph (ECG) are prone to operator error due to multiple lead attachment requirements. These multiple electrode based systems are also not convenient for continuous cardiac health monitoring, ... En savoir plus

Photoacoustic Modeling Using Amplitude Mode Expansion Method in a Multi-Scale T-cell Resonator

S. El-Busaidy [1], B. Baumann [1], M. Wolff [1], L. Duggen [2],
[1] Hamburg University of Applied Sciences, Germany
[2] University of Southern Denmark, Denmark

The photoacoustic (PA) effect consisting of the generation of an acoustic signal based on the absorption of light has already demonstrated its potential for various spectroscopic applications for both gaseous and solid samples. The signal produced during photoacoustic spectroscopy (PAS) ... En savoir plus

基于有限元模拟和等效热阻法 500KV 海底电缆载流量计算

陈玉 [1], 郝义 [1],
[1] 西安交通大学

精确监测电缆载流量对海南联网系统500 kV海底电缆的规划和运行具有重要意义。目前进行载流量计算的方法主要分为三类:解析法、数值解法和试验测试法。数值解法是进行海底电缆温度场分析时最常用的方法,其中有限元法能很好的模拟各敷设情况下电缆的实际运行情况,省去了实地测试成本,又保证了计算精度。本文利用COMSOL仿真软件研究了一种基于分布式光纤传感技术的海底电缆载流量多物理场仿真方法。根据海南500kV海底电缆敷设的实际情况，建立四种不同的仿真模型，分别为空气裸露段、登陆段、潮间带和海床。根据不同模型中海底电缆、光缆的物理参数和外部环境物质的材料设置边界条件 ... En savoir plus

An Original Way of Using COMSOL Multiphysics® Application Builder to Enhance Simulation of Laser Welding

Y. A. Mayi¹, M. Dal¹, P. Peyre¹, M. Bellet², C. Metton³, C. Moriconi³, R. Fabbro¹
¹Laboratoire PIMM, Arts et Metiers, Paris, France
²CEMEF, MINES ParisTech, Sophia Antipolis, France
³Safran Additive Manufacturing, Paris, France

The present work introduces a new methodology, based on COMSOL Multiphysics® Application Builder, to account for the “beam trapping” effect in multiphysical modelling of laser welding. Incident intensities involved in laser welding processes are high enough to induce material ... En savoir plus

Modeling and Optimization of THz Photoconductive Antenna

Nimisha Arora [1], Amartya Sengupta [1], Aparajita Bandyopadhyay [2],
[1] Indian Institute of Technology Delhi, New Delhi, India
[2] DRDO-JATC, New Delhi, India

Terahertz (THz) technology has been receiving expanding interest in the recent years due to its rich scientific and potential application. For instance, a variety of semiconductor phonons resonate in the THz range; macro-biomolecules have unique ﬁngerprint lines in the THz range; less ... En savoir plus

Designing B-field Coils from the Inside-Out

C.B. Crawford[1], Y. Shin[1], and G. Porter[1]
[1]Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky, USA

Traditionally the design cycle for magnetic fields involves guessing at a reasonable conductor / magnetic material configuration, using FEA software to calculate the resulting field, modifying the configuration, and iterating to produce the desired field. Our method involved solving the ... En savoir plus

三维高温超导磁悬浮动态磁-热-力行为仿真研究

黄志川 [1], 黄欢 [2],
[1] 西南交通大学，成都市，四川省，中国
[2] 西南交通大学

高温超导磁悬浮现象自发现以来,以其独特的无源自稳定优势被广泛应用于超导轴承、飞轮储能和轨道交通等领域。随着高速磁悬浮应用的发展和需求，关于高温超导磁悬浮在动态运行下的悬浮特性研究变得尤为重要。本文借助COMSOL Multiphysics软件，耦合AC/DC模块和传热模块，基于磁场强度H法和非线性幂指数E-J关系，建立了悬浮于环形永磁轨道上方的高温超导块材三维实体模型。通过设置轨道的上下振动来模拟超导块材高速运行下受到的轨道不平顺带来的交变磁场的影响。仿真以高温超导块材磁-热-力耦合特性为切入点，研究了在变化外磁场下超导块材悬浮性能及其内部温度变化情况 ... En savoir plus

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