See How Multiphysics Simulation Is Used in Research and Development


Здесь представлены презентации, которые демонстрировались на конференциях COMSOL по всему миру. В презентациях рассказывается о передовых исследованиях и инновационных продуктах, созданных с помощью COMSOL Multiphysics. Исследования относятся к различным отраслям и областям применения, включая электрические, механические, гидродинамические и химические дисциплины. Чтобы найти презентации из нужной области, воспользуйтесь функцией быстрого поиска.
View the COMSOL Conference 2018 Collection

基于多级力学耦合的气传孢子分离微流控芯片设计

徐佩锋 [1], 杨宁 [1], 刘海龙 [1],
[1] 江苏大学

对气传真菌孢子进行分离和分类是实现农作物真菌病害早期精确检测的重要环节,基于气溶胶颗粒运动理论,论文提出了多级力学耦合微流控芯片的气传孢子提取方法。利用COMSOL Multiphysics软件的CFD和粒子追踪功能,设计多弯曲通道的一级分离结构,实现气流中单孢子和团聚态孢子的预处理和初级分离。然后根据单向受力加速原理,设计径向鞘流加速的二级分离结构,实现对气流中特定孢子提取的二级分离。在两级分离结构之间设置了台阶递降和双鞘流聚焦耦合结构,以保证通道宽度和气流速度的匹配。论文阐述了各环节的工作原理,并分别进行了实验分析和验证。研究结果表明 ... Читать дальше

基于COMSOL的铁芯电抗器振动噪声仿真分析

黄文聪 [1], 李晓涵 [1], 吴锋 [1], 查冰 [1], 刘凌云 [1],
[1] 湖北工业大学 武汉市 湖北省 中国

铁芯电抗器作为电力系统中重要的基础设备之一,具有漏磁小、节省空间等优点,因此在新能源和城市配电系统中得到广泛应用。但其运行中产生的噪声严重污染周边环境,而且电抗器振动过大对其自身正常运行也会构成威胁。本文在磁致伸缩效应和麦克斯韦方程相关理论研究基础上,采用COMSOL Multiphysics®多物理场仿真软件,通过AC/DC模块、声-固模块对三相电抗器铁芯的振动噪声进行研究。首先从多物理场耦合的角度,定义瞬态计算条件,然后在瞬态磁场的基础上加上声场和固体力场来建立三维物理模型,最后通过多物理场的耦合计算,得到电抗器铁芯振动位移和声压场分布 ... Читать дальше

波长、偏振复用全介质纳米天线

兰胜 [1], 潘麦铭成 [1], 向进 [1],
[1] 华南师范大学,广州,广东,中国

辐射定向性与辐射的方向性是两个衡量纳米天线性能的重要指标。目前,大量的研究者将精力投入在设计具有超高辐射定向性的纳米天线,或者易于调节辐射方向性的纳米天线研究之中。但是,具有侧向散射能力的纳米天线其定向性不一定好,具有较高定向性的纳米天线很难实现方向的偏转。因此,在一个纳米天线上同时实现天线辐射的超高定向性与天线辐射易于调节的方向性一直是天线设计者所追求的目标。 我们使用COMSOL波动光学模块仿真纳米天线,并应用了案例库中(Application ID: 31901)中的案例文件,定性地分析了全介质纳米天线中的不同电、磁模式 ... Читать дальше

三维地质建模APP开发

陈冬 [1], 张佳亮 [1], 郑贵强 [2], 叶智慧 [1], 高添鑫 [1], 张国祥 [1],
[1] 中国石油大学(北京),石油工程学院,北京,中国
[2] 华北科技学院,安全工程学院,廊坊,河北,中国

三维地质建模是进行油藏数值模拟的前提。为了更为便捷地创建三维地质模型,本文开发了基于钻孔数据的三维地质建模APP,主要步骤为:(1)基于钻孔数据和COMSOL Multiphysics 内置的插值函数功能,建立参数化曲面,形成地层界面;(2)重复绘制参数化曲面,生成所有地层界面;(3)建立水平工作面,绘制研究区域轮廓线;(4)拉伸研究区域轮廓线充填所有界面间实体;(5)通过布尔运算删除实体的多余部分,最终转化为三维地质模型实体。该APP提供了更为便捷的、界面友好的三维地质建模手段,可应用于地质建模、油藏模拟等领域。 关键词:三维地质建模,参数化曲面,油藏模拟,APP ... Читать дальше

Keynote Talk: Building a Better Pump for Heart Failure Patients

[1] F. Hansen
Abbott Laboratories, Pleasanton, CA, USA [1]

Abbott’s Mechanical Circulatory Support group build implants that help people suffering from heart failure, a deadly and increasingly common disease. We combine computational fluid dynamics and particle tracing simulations to optimize the designs of implantable blood pumps that replace ... Читать дальше

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 ... Читать дальше

Keynote Talk: Simulation-Based Approach to STEM Challenges

I. Milanovic [1]
[1] University of Hartford, Hartford, CT, USA

A new pedagogical approach to STEM challenges is currently implemented in the mechanical engineering program at the University of Hartford. This approach combines problem- and inquiry-based learning, simulations and apps with the COMSOL Multiphysics® software, and emphasizes the ... Читать дальше

Symmetric Stack Model of a Molten Carbonate Fuel Cell (MCFC) with Indirect Reforming

M. Pfafferodt[1], P. Heidebrecht[2], and K. Sundmacher[1,2]
[1]Otto-von-Guericke-University, Magdeburg, Germany
[2]Max-Planck-Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany

A model of a Molten Carbonate Fuel Cell (MCFC) stack with internal reforming is presented.  It describes the concentrations in the gas phase, the temperatures and the current densities in this highly integrated system. The differential equations, boundary conditions and the ... Читать дальше

Quasi-static Analysis on the Effect of Metal Penetrating Depth into the Substrate in Microstriplines

S. Musa, and M. Sadiku
Prairie View A&M University Networking Academy (PVNA), Prairie View, TX, USA

The effect of metallization thickness on planar transmission lines plays an essential role in microwave integrated circuits and thin film technology, especially in the propagation characterization and the electric field distribution in the structures. The objective of this paper is to ... Читать дальше

Computational Analysis of the Mechanical and Thermal Stresses in a Thin Film PProDOT-Based Redox Capacitor

J. Sotero-Esteva[1], M. Rosario-Canales[2], P. Gopu[3], and J. Santiago-Avilés[3]

[1]Department of Mathematics, University of Puerto Rico at Humacao, Humacao, PR
[2]Department of Chemistry, University of Pennsylvania, Philadelphia, PA, USA
[3]Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, USA

Among the several types of capacitors, the double-layer and redox types have gathered increasing attention to address some of the heavy power demands of modern technology. In redox capacitors, charge is stored chemically via oxidation/reduction processes in the active materials like ... Читать дальше