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.
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Accurate thermo-physical properties of materials are valuable for both scientific research and industrial applications. For high temperature liquid materials, two issues exclude traditional methods: elevated reactivity of test material and experimental apparatus, uncontrolled heat ... Read More
AC electrothermal (ACET) micropumps are based on the temperature gradient caused by Joule heating or an external heat source in the bulk of an electrolyte. In this paper, a 2D simulation was performed to study the effect of substrate thickness and material (glass and silicon) for an ACET ... Read More
Mathematical description of microwave drying requires the solution of two different physics: electromagnetics in the microwave oven cavity and food material and, transport process (mass, momentum and heat transport) in the food material. Maxwell’s equations for electromagnetics were ... Read More
Plasma Arc Welding (PAW) is one of the important arc welding processes commonly used in electronics, medical, automotive and aerospace industries due its high accuracy, finishing, and ability of welding any hard materials. It is an extension of Tungsten Inert Gas welding (TIG or GTAW). ... Read More
在微波加热的多物理场仿真中,如果被加热物体的几何区域太小或者太薄,会造成整个模型网格剖分困难、网格数量多且计算消耗内存大等问题。本文针对微波加热时薄壁容器的网格剖分困难,网格数量大,且占用计算机内存资源多的问题,提出了一种基于变换光学算法的微波薄壁加热模型计算优化方法。利用变换光学算法将薄壁区域空间扩大,通过改变薄壁区域内的介质参数来与原模型进行空间映射,从而避免网格剖分过程中的薄壁问题出现,这样可以在同样的网格剖分设置下减少整个模型的网格数量,节省计算时间,减少计算机内存资源的占用。通过相应的公式推导,在二维模型中实现了薄壁变换光学算法的计算 ... Read More
Abstract: As a environmentally friendly thermal energy harvesting device, thermoelectric generator (TEG) can convert heat into electricity directly. Therefore, researchers have made great efforts to detailed explanation the principium including established many steady-state models to ... Read More
随着社会进步和发展,能源紧缺的问题日益突出。生物柴油因十六烷值高、无毒、可再生等突出优势正成为新能源开发热点。微波辅助生物柴油制备反应时间短、能耗小、环境污染少,所以设计高效的微波反应釜制备生物柴油势在必行。 针对微波反应器在生产生物柴油时加热不均匀的问题,本文设计了一种可以明显改善微波加热均匀性的夹层釜式微波反应器。然后,再引入能改善物料流体传热的搅拌桨装置。通过电磁场、温度场和流场控制强化液体物料传质传热,进而促进生物柴油的制备。本文所有的仿真工作均通过COMSOL软件进行,分别是用于计算反应器内电磁场分布的“电磁波,频域(emw)”接口 ... Read More
基于纸基微流控芯片(μPAD)的核酸提取和扩增反应需均匀稳定、快速响应的热源。半导体制冷器具有无需制冷剂和体积小等优点,可为纸基芯片提供便携式、低功耗分析平台。相较于其他传统核酸扩增与检测设备,μPAD可以借助内部纤维结构的毛细作用自驱动输送流体介质。并且,微尺度下纤维结构具备较高的比表面积,在原理上可改善常规比色、荧光等检测方法的检出限和精准度。然而,滤纸材料本征参数对试剂溶液动态扩散过程和反应结果影响很大,数值仿真模拟是μPAD性能分析和优化设计的重要途径。本文应用COMSOL®热电效应耦合模块和非等温流动耦合模块,获取芯片内部的温度场信息,评价μPAD温控系统设计 ... Read More
随着碳纤维增强复合材料(CFRP)在航空等领域的应用规模逐渐扩大,其低电导率带来的雷击风险得到广泛关注,CFRP雷击防护设计已成为研究热点,而雷电环境多理场仿真技术也在CFRP雷击防护设计中逐步发挥作用。目前,针对含雷击防护(如铺设防雷金属网)的CFRP平板结构雷击直接效应仿真研究已有一定成果,但是,对于铺设防雷金属网的CFRP-金属紧固件连接结构的雷击仿真鲜有研究。 本研究以铺设防雷金属网的CFRP-金属紧固件连接结构为研究对象,借助COMSOL Multiphysics重点分析了连接结构遭受雷击时的电-热多物理场效应。 ... Read More
飞行器遭受雷击时会产生多物理效应,包括电磁感应效应、热效应和电磁力效应等。建立三维电磁、电磁-热耦合、电磁-热-力耦合等多种典型模型进行仿真分析,通过对电势、电流、温度、电磁场和力等物理量的分析,研究飞机附着点、雷电防护布局、雷电流分布、金属网/复合材料熔蚀、机舱内电磁场分布、油箱缝隙打火、结构受力等问题。仿真结果在不同程度上可以为飞行器的雷电防护提供重要参考和设计依据。本文以 COMSOL Multiphysics® 多物理场耦合软件为仿真分析工具,建立多种典型问题模型进行计算并对结果分析,说明雷电及其相关问题可以通过仿真分析进行评估和解决。 Read More