See How Multiphysics Simulation Is Used in Research and Development
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 2018
Development of Eddy Current Probe using FEM for Matte Level Detection in Pyrometallurgical Furnaces
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
基于COMSOL的磁声电成像(MAET)模拟方法研究 new
生物组织的生理和病理结构发生变化时, 导致组织电导率发生变化。因此,通过检测组织电导率来及时发现组织结构生理和病理情况,可以为癌症早期诊断提供依据。磁声电成像(MAET)是一种新颖的医学成像方法,由于在成像过程中使用了超声激励和电阻抗电极检测,所以其图像具有超声成像的高分辨率和电阻抗成像的高对比度。本研究使用的接口有压力声学时域显式和电流,仿真中使用2 MHz,2个cycle的正弦脉冲驱动聚焦超声探头,求解时域显式压力声学方程,获得组织振动速度。然后在电流接口中设置外部电流密度,把速度洛伦兹项耦合进外部电流密度,使用接地和浮电势检测电极上采集的磁声电电压 ... En Savoir Plus
用于防腐层下缺陷检测的电容成像装置
带有防腐层的金属管道被广泛应用到油气输送,金属管道表面缺陷的存在会对管道运行产生安全隐患,如何检测防腐层下金属表面缺陷一直是无损检测领域的难题;本文设计了一种基于电容成像技术的新型电容成像探头(图1),利用该探头对不同深度的表面缺陷进行线扫描研究,并搭建电容成像实验装置(图2)进行实验研究,最后对比分析仿真结果(图3)与实验结果(图4)。 计算方法:通过 COMSOL Multiphysics® 软件的 AC/DC 模块,利用背对背三角形电容成像探头对不同深度的表面缺陷进行线扫描。求电容值仿真中用到了“静电(es)”接口,涉及到了基本的电磁学方程。 结果 ... En Savoir Plus
Optimal PDE Control Using COMSOL Multiphysics
An optimal control problem (OCP) is studied to a PDE of elliptic type as well as state constraints. The resulting optimality system contains two PDEs, one algebraic equation and the so called complementary slackness conditions, i.e. dual products between function spaces. At this point, ... En Savoir Plus
Modeling the Thermal-Mechanical Behavior of Mid-Ocean Ridge Transform Faults
To investigate the thermal-mechanical behavior of oceanic transform faults, we calculate 3-D steady-state incompressible mantle flow and heat transport using COMSOL Multiphysics. Our model incorporates a nonlinear viscous rheology with a visco-plastic approximation to simulate ... En Savoir Plus
High-Temperature Sodium/Metal Chloride Storage Battery
Sodium/metal chloride storage batteries, used in hybrid propulsion applications, provide high energy and power densities safely and reliably. To understand the dynamics of electrochemical cycling, a high-temperature sodium/ferrous chloride storage cell was modeled in two dimensions. The ... En Savoir Plus
Modeling and Characterization of Superconducting MEMS for Microwave Applications in Radioastronomy
Superconducting GHz electronics circuits are frequently used in Radio Astronomy instrumentation. The features of these instrumentations can be significantly improved by using tuneable capacitances, which can be realized by electrically actuated, micromechanical bridges (MEMS) made of ... En Savoir Plus
Designing the Actuator for the Next-Generation Astronomical Deformable Mirrors: a Multidisciplinary and Multiphysics Approach
The actuation system of the deformable mirror is one of the crucial components of an Adaptive Optics unit. One possible implementation comprehends a linear force motor and a capacitive sensor providing the feedback measure signal. Choosing a magnetic circuit that makes optimum use of the ... En Savoir Plus
Energy Transformation Damping
A model for material damping is presented in terms of internal friction and in terms of a variation of stiffness. In the latter case the idea is that the stiffness increases if elastic energy is stored and decreases if elastic energy is released. In case of a single mass spring system ... En Savoir Plus
Helium Two-Phase Flow in a Thermosiphon Open Loop
Outline of presentation: * Missions of SACM (Accelerator, Cryogenics and Magnetism Division) * Context : The Large Hadron collider at CERN, Geneva * Cooling large superconducting magnet * Thermosiphon open loops for cooling superconducting magnets * Experimental facility and ranges of ... En Savoir Plus