See How Multiphysics Simulation Is Used in Research and Development

Engineers, researchers, and scientists across industries use multiphysics simulation to research and develop innovative product designs and processes. Find inspiration in technical papers and presentations they have presented at the COMSOL Conference. Browse the selection below or use the Quick Search tool to find a specific presentation or filter by application area.
View the COMSOL Conference 2018 Collection
RF and Microwave Engineeringx

Electric Field Analysis of a Green Rust Surface Treatment Tank for High/Super Alloys

H.K. Yang[1], S.C. Tseng[1]
[1]Institute of Mechanical Engineering, National Yunlin University of Science Technology, Taiwan

In order to perform rust surface treatment for stainless wires, we proposed an electrolyzing equipment to do so. It has the following advantages: safer, cheaper and less environmental pollution. To study the performance of the electrolyzing process, numerical simulation for electric ... Read More

Theoretical Study of Phase and Amplitude Characteristics of Microwave Coplanar Delay Line Containing Thin Ferroelectric Layer

V. Nikolaevtsev[1], S. Yankin[2], S. Suchkov[1], D. Suchkov[1], A. Litvinenko[1]
[1]Saratov State University, Saratov, Russian Federation
[2]Joint International Laboratory LICS/LEMAC, IEMN UMR CNRS 8520, EC Lille, France

We theoretically studied the microwave coplanar line of different geometry based on MgO substrate with a thin (30 nm) ferroelectric layer under the external electric field using the environment of 3D modeling in COMSOL Multiphysics®, RF Module, Frequency Domain. Frequency dependence of ... Read More

Wireless Interaction of Neighboring Two Arm Archimedes Spiral Coils in the RF Electromagnet Range

A. Kalinowski[1]
[1]Naval Undersea Warfare Center/ Division Newport, Newport, RI, USA

The paper addresses a class of problems for modeling and consequently simulating the electromagnetic field radiation pattern from two arms Archimedes spiral coils. The frequency spatial wavelengths relative to the coil dimensions are in a range where the electromagnetic Maxwell’s ... Read More

Modeling of Drying of Cellular Ceramic Structures: Coupled Electromagnetic and Multiphase Porous Media Model

A. Dhall[1], G. Peng[2], G. Squier[2], M. Geremew[3], L. Bogaczyk[2], J. George[3], W.A. Wood[3], and A.K. Datta[1]
[1]Biological and Environmental Engineering, Cornell University, Ithaca, New York, USA
[2]Manufacturing Technology & Engineering, Corning Inc., Sullivan Park, Corning, New York, USA
[3]Corporate Research, Corning Inc., Sullivan Park, Corning, New York, USA

Cellular ceramic substrates are extensively used for pollution control systems in vehicles. The manufacturing process of them can involve microwave drying. In this study, we describe the development of a modeling framework for the microwave drying process of these substrates. The ... Read More

Wireless Power and Communications for Implantable Biosensors

C. Romero[1], M. Mujeeb-U-Rahman[1]
[1]California Institute of Technology, Pasadena, CA, USA

Implantable biosensors have the potential to revolutionize the healthcare industry by allowing patients and their health care providers to continuously monitor blood pH levels, pCO2, proteins, metabolites, and a wide variety of other biomolecules. These devices need to operate completely ... Read More

Keynote Talk: COMSOL® Used as Core Technology for Development of RF/Microwave and High-Speed Digital Connectors

[1] E. Gebhard
Signal Microwave, Scottsdale, AZ, USA [1]

Signal Microwave designs and builds coaxial connectors for microwave and high-speed digital applications. This includes wireless systems, radar, 5G, optical systems, test equipment, back planes, etc. The COMSOL® software is one of our core technologies and is used to design virtually ... Read More

Prospects of Multiphysics Simulations to Steer the Development of High Brightness LED Technologies

T. Lopez [1], O. Shchekin [1],
[1] Lumileds, Eindhoven, Netherlands

The versatility of COMSOL Multiphysics® software has positioned it at competitive levels against other considered industrial-standard engineering software tools. This contribution is directed towards emphasizing the need of further developing the basic concepts of this versatile tool in ... Read More

基于射频等离子体鞘层模型的放电仿真研究 new

胡瑞韬 [1], 戴飞 [1], 张国梁 [1],
[1] 北京航空航天大学 北京 中国

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 ... Read More

四端口微波扫频加热模型的数值建模与分析 new

杨丰铭 [1], 朱铧丞 [2],
[1] 四川大学、成都、四川、中国
[2] 四川大学

传统的微波加热存在加热不均匀加热效率低等问题,对此本文提出了一种微波四端口扫频加热模型。通过使用四个端口馈入能量和使用变化的频率来提高加热的均匀性和效率。微波加热的过程是一个电磁场与固体传热场相互耦合的过程,通过COMSOL软件与MATLAB软件的联合调用实现了四个微波馈口的频率时变微波加热的数值分析。并通过NPA的计算优化了网格,最终通过实验验证了仿真的准确性与可靠性。 仿真模型如图1所示,被加热的物质为45mm*45mm*15mm的土豆块,土豆块放置在腔体底部中央的聚四氟乙烯托盘上。微波四个侧面个连接BJ26波导,微波通过波导传输到腔体中 ... Read More

宽带格林函数方法与COMSOL用于拓扑光子绝缘体能带结构建模的比较 new

谭述润 [1], 封朝阳 [1],
[1] 浙江大学

拓扑光子晶体由其独特的边缘态和单向导波特性而备受关注。研究者发现可利用旋磁材料的磁场响应打破时间反演对称性来实现光子晶体中的拓扑边缘态。这促使我们研究旋磁散射体的散射现象并探索对拓扑光子绝缘体能带结构进行建模的有效方法。本文中,我们比较宽带格林函数方法(Broadband Green’s function)与COMSOL中有限元方法在处理这一问题中的应用。 宽带格林函数方法通过将面积分方程转化成一个特征值问题来研究光子晶体中周期排布的散射体对电磁波的散射行为。宽带格林函数是对周期格林函数的一种有效表征方式 ... Read More