Scopri come la simulazione multifisica viene utilizzata per ricerca e sviluppo
In questa sezione troverete i lavori presentati alle Conferenze mondiali COMSOL. Le presentazioni descrivono ricerche e prodotti innovativi progettati con COMSOL Multiphysics da colleghi di tutto il mondo. I temi delle ricerche presentate abbracciano un'ampia gamma di settori produttivi e aree applicative, in ambito elettrico, meccanico, fluidodinamico e chimico. Lo strumento di Ricerca Rapida vi permetterà di trovare le presentazioni che si riferiscono all'area di vostro interesse.
Visualizza gli articoli presentati alla COMSOL Conference 2020
线板电极结构是电晕放电装置中一种常见的结构，但是其电晕放电的发展过程却一直不清楚。本文利用comsol中的等离子化学模块，对大气压条件下空气介质中线板电极的负电晕放电发展过程进行了仿真研究。在仿真模型中，高压电极为线电极，板电极为地电极，模型包含了12中粒子之间的26种反应，其涵盖了典型的弹性碰撞，碰撞电离，电荷转移，复合反应，附和与解离反应。最终的仿真结果显示，在电晕放电发展初期存在一个脉动过程，等离子体以脉冲的形式向地电极扩展。当电晕处于稳态时，在高压电极处是以O4+为主的阳离子，在远离高压电极处的地方以O2-及O-等阴离子为主 ... Per saperne di più
Streamers are considered as main cause of electrical breakdown in air at atmospheric pressure. A streamer is an ionization wave propagating in neutral gas which is converted into low-temperature plasma behind its front. A streamer model is based on drift-diffusion approach where space ... Per saperne di più
The field of Biomedical Engineering is expanding at an exponential rate. As we began to unravel clues about our complex biological vessels, we uncovered more questions than answers. Our collective curiosity has led biomedical engineering into a broadening field by study of physiological ... Per saperne di più
The aim of the proposed device is to overcome the typical drawbacks of MHD generators, such as the needed of a very high external magnetic field, the strong dependency of the efficiency by the temperature of the fluid, and the deterioration of the electrodes that are in contact with the ... Per saperne di più
The search for energy saving is nowadays mandatory because of the constant growth of CO2 emissions caused by an inefficient energy management. Thermal Energy Storage (TES) has an important role in designing of energy efficient systems, including solar energy storage (daily or seasonal) ... Per saperne di più
电磁辐射对燃油危害是加油站、炼油厂、油气基地等大型设施禁用手机和其他无线通讯设备的重要原因。不同于静电对燃油蒸气的危害，本文的研究重点在于分析不同频率下的射频放电击穿特性。基于射频等离子体鞘层模型，通过多物理场仿真，分析了12M~300MHz频率下的氩气射频放电过程。仿真结果表明，当激励频率大于雪崩击穿临界频率时，两侧极板附近会形成随激励周期变化的鞘层区，中心区域为准电中性的等离子体区。同时，当激励频率远小于等离子体频率时，鞘层会促进极板附近的γ电离过程；随着频率增大，鞘层特性会逐渐退化，而中心区域的α电离过程会增强。此外，放电特性曲线表明，频率越高，板间放电电压越小 ... Per saperne di più
A study of an atmospheric pressure direct current microplasma discharge in He/N2 is performed using COMSOL Multiphysics. The calculation of heat transfer is fully coupled with the plasma simulation so as to resolve the gas heating in discharges. A simple circuit model is used to decide ... Per saperne di più
As interest in the electromagnetic spectrum expands towards the infrared and terahertz range, the distinct advantages of using semiconductors instead of metals for plasmonic applications must be understood. Plasmonic resonances in gold (Au) and indium nitride (InN) gratings are studied, ... Per saperne di più
Corona discharge is used in several applications such as surface treatment of polymers, photocopying or dust removal in air conditioning. Streamer formation is undesirable for most of these applications. Therefore, several studies have been dedicated to investigate the formation and ... Per saperne di più
Based on experimental data describing the Ca2+ dynamics over a time period of 5 s in non-stimulated T Cells obtained via high-resolution Ca2+ imaging, it was possible to identify the appearance of random spontaneous Ca2+ microdomains inside the Endoplasmic Reticulum (ER) - Plasma ... Per saperne di più