Sehen Sie, wie die Multiphysik-Simulation in Forschung und Entwicklung eingesetzt wird
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Sehen Sie sich die Kollektion für die COMSOL Conference 2024 an
本课题针对“三河市汇诚光机电有限公司”生产的热牵伸辊存在的加热线圈易烧断问题进行了理论分析和软件仿真，从理论上分析了磁场和涡流的分布规律，并基于电磁场与温度场耦合计算方法，对设备的温度分布进行研究，最终通过磁场与温度场耦合计算方法，模拟计算热辊电磁加热条件下的涡流分布与传热。通过COMSOL Multiphysics建立热牵伸辊二维和三维物理模型，进行了多物理场设置，边界条件的设定和材料参数的选定，用有限元法计算热牵伸辊在不同材料下的不同部位的磁通密度模、感应电流（涡流）以及热功率和温度，讨论了辊筒和线圈的热量分布，分析了热牵伸辊线圈寿命短的原因 ... Mehr lesen
A micromirror or a torsional actuator in general has been proven to be one of the most popular actuators fabricated by Micro-Electro-Mechanical System (MEMS) technology in many industrial and biomedical applications such as RF switches, a laser scanning display, an optical switch matrix, ... Mehr lesen
Plasma torches are used in processing of materials as well as in the energy industry for producing plasma. In a non-transferred arc plasma torch, an electric arc can be initiated by applying a direct current (DC) between the cathode and anode, both placed inside the torch. Then, the ... Mehr lesen
Several commercial CFD companies have recently extended their codes to magnetohydrodynamic (MHD) flows. However, there are many computational challenges associated with MHD flows under the harsh fusion environmental conditions that require such codes to be carefully examined in a special ... Mehr lesen
Optical cloaking was considered as fictional. Recent developments shows that macro scale optical cloaking is practical and functional. Brief review of ray optics based macro optical cloaking concepts are given. COMSOL Multiphysics® software simulations of cloaking devices are detailed. ... Mehr lesen
Radiofrequency ablation (RFA) is a minimally invasive procedure that can be used to treat chronic pain. Radiofrequency (RF) energy is emitted through a probe that is placed near a sensory nerve in the region of pain. The RF energy excites the nearby ions in the tissue causing them to ... Mehr lesen
Finite element modelling of electrical machines usually assumes uniform magnetic properties and loss behaviour throughout the steel laminations. It is well known that manufacturing processes, like the assembly of the machine, deteriorate the properties of the core material. Generally, ... Mehr lesen
We present an optimization procedure to optimize the maximum coupling of free space optical wave to surface plasmon. Shape derivative from shape sensitivity analysis is calculated, and the corresponding partial derivatives of the objective functional with respect to finite number of ... Mehr lesen
通过COMSOL 内置的AC/DC模块可以模拟铁磁材料在磁场下的行为，如磁滞回线等。该方法通过求解麦克斯韦方程组来对材料的宏观磁性性质进行刻画。然而若要仿真磁性材料内微观或介观层面上磁矩的动力学行为，则需要使用到微磁学模型（micromagnetics），即求解Landau-Lifshitz-Gilbert方程（LLG方程）。微磁学模型假设磁性材料的磁性由若干个模长守恒的等效磁矩构成，由于交换相互作用、磁偶极相互作用、磁晶各向异性等各种相互作用的存在，我们可以仿真磁性材料内的微观磁结构，如磁畴壁、磁涡旋以及具有拓扑性质的磁斯格明子等 ... Mehr lesen
The continuous and intensive use of squirrel-cage induction motors in the modern industry, has in some cases caused a serious deterioration of the electrical insulation in the windings of the machine, generating as a consequence internal short-circuit failures, the effects on the ... Mehr lesen