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
Bolometer is a thermal infrared sensor used for measuring the intensity of radiation via the heating of a material due to the radiations. A bolometer consists of an absorptive element, a thin layered material, connected to a thermal reservoir. The result is that any radiation received on ... Per saperne di più
在电磁兼容领域中，除了电磁干扰还会存在毁灭性的电磁辐射危害。其中电磁辐射对燃油危害的研究关键在于掌握射频放电的击穿特性，为研究不同频率的击穿特性，本文基于电磁场和电路理论，以飞机油箱口结构为例构建了氩气射频放电前后的等效电路模型，并简要分析了射频放电规律。根据电磁场和电路理论，飞机油箱口放电结构等效为圆柱型交流电容，等效电路的并联电阻阻值随气体的导电性能变化而变化，能有效表征气体击穿电离程度的高低。仿真研究表明，相同激励电压条件下，频率越高，气体越容易击穿，等效并联电阻阻值越低。气体击穿电离程度随频率升高存在不连续放电、连续稳定放电、积累效应和雪崩效应四种不同的放电规律。 Per saperne di più
在过去的二三十年中，液体燃烧电弧被用来制造纳米碳结构。该方法利用电弧空间中存在的碳蒸气作为电极腐蚀的结果，在存在高温梯度的区域迅速冷却时形成碳纳米管和富勒烯。碳结构的形成速率和结构取决于等离子体环境和形成机制两个方面。目前的研究工作，等离子体环境的形成和从电极表面的碳蒸气的传输是用二维电弧模型计算研究的。利用流动气液界面的传热来确定水的蒸发速率，考虑到电弧辐射对水蒸发的贡献以及碳和水蒸气之间的化学反应。此项研究使用 COMSOL Multiphysics 等离子体模块及传热模块。 Per saperne di più
High-intensity discharge lamps will in the foreseeable future be important light sources despite a growing market share of LEDs. Cost and energy efficient high frequency (300 kHz) operation is hampered by the excitation of acoustic resonances inside the arc tube, which results in low ... Per saperne di più
Many scientific instruments are based on high vacuum equipment with a gas pressure maintained in the order of 1 Pa or below. The gas flow in the low pressure limit, called the molecular flow regime, is a case of transport with zero viscosity. The ability to solve an integral equation on ... Per saperne di più
Magneto-Hydrodynamic (MHD) power generation systems were originally investigated starting from the fact that the interaction of a plasma with a magnetic field must take place at much higher temperatures than could be observed in a mechanical turbine. The main problems of traditional MHD ... Per saperne di più
A microfluidic component was designed to collect blood from a finger prick by capillary flow and to perform biological analysis. It was used to perform ABO blood typing experiments in one step, the blood drop deposit, by agglutination of red blood cells (RBC) using embedded dried ... Per saperne di più
For biocompatible prosthetics, from dental implants up to bone parts, manufacturers have to find the best way to correlate process parameters and the material properties as to meet the unique needs of individuals. Additive manufacturing techniques aim at creating complex biocompatible ... Per saperne di più
This article describes the design of MEMS based cantilever structure intended for determination of blood group and it is compared with manual method. Cantilever structure design has a sensing layer and when a blood sample comes in contact with this, results in coagulation. The surface ... Per saperne di più
Models that describe hydrogen permeation through a thin TiO2 film deposited on Pd have been developed based on a mass-balance equation consisting of diffusion, reversible hydrogen absorption/desorption, and irreversible hydrogen trapping. These models are solved by the finite element ... Per saperne di più