Veja como a simulação multifísica é usada em pesquisa e desenvolvimento


Aqui você encontrará apresentações realizadas nas Conferências de Usuários COMSOL de todo o mundo. As apresentações englobam pesquisas e produtos inovadores feitas por engenheiros e cientistas usando o COMSOL Multiphysics. Os tópicos abrangem uma grande gama de indústrias e aplicações, como elétrica, mecânica, escoamento e química. Use a função de busca "Quick Search" para encontrar apresentações na sua área de interesse.

Veja a coleção da COMSOL Conference 2018

A Novel Type of Pattern Synthesis Implementation using Corrugated Apertures

N. Herscovici [1], A. Boryssenko [2]
[1] Air Force Research Lab, Wright-Patterson AFB, OH, USA
[2] A&E Partnership, Belchertown, MA, USA

The antenna pattern synthesis problem is of the utmost importance in almost every kind of antenna applications. Therefore, a very large number of contributions have appeared on this subject. A number of different implementation methods are well known, and widely used. In this paper we ... Saiba Mais

Determination of NFC-Antenna Operating Distance by COMSOL Multiphysics® Simulation of Planar Transformer Modeling

A. K. Palit [1],
[1] ZF-Lemförder Electronic GmbH, Espelkamp, Germany

Although the Near Field Communication (NFC) concept has been developed for the short distance communication between the NFC-reader antenna and transponder/Tag, yet the requirements of different Automotive OEMs vary drastically. For instance, for the keyless entry into the car based on ... Saiba Mais

Simulation and Design of Lithium Ion Battery Packs for the Altitude Conditions in Northern Chile

A. Mallco Carpio [1], M. Cortes Carmona [1],
[1] University of Antofagasta, Antofagasta Energy Center, Antofagasta, Chile

One of the most noticeable effects in loss of performance and capacity of thermal systems is produced by altitude. This causes that the density of a compressible fluid and the atmospheric pressure are considerably reduced, causing a decrease in electrical power and thermal systems. Given ... Saiba Mais

The Effect of Fuel and Oxidant Pumping on the Performance of a Membraneless Microfluidic Fuel Cell

A. F. Tayel [1], M. A. Fathallah [1], M. M. Elsayed [1],
[1] Department of Mechanical Engineering, Alexandria University, Alexandria, Egypt

For the commercialization of membraneless microfluidic fuel cell, voltage and minimum power demand for various applications need a precise selection of fuel and oxidant flow rates to achieve the optimum cell performance. A numerical study on a membraneless microfluidic fuel cell was made ... Saiba Mais

A Study on Continuous Beam Laser Welding of Dissimilar Materials using Multiphysics Simulation

S. Soundarapandian [1], R. Indhu [1], L. Vijayaraghavan [1], Sarathkumar Loganathan [1],
[1] Indian Institute of Technology Madras, Chennai, Tamil Nadu, India

Laser dissimilar welding finds their application mainly in the field of tailor-welded blanks (TWB). Tailor-welded blanks combining steel to aluminum alloys are widely used in automotive industry for achieving excellent lightweight structures and at the same time enhancing the functional ... Saiba Mais

黑莓果微波真空加热温度场研究

宋春芳 [1], 陈遥 [1], 马晓彤 [1], 张宏伟 [1], 李瑞旺 [1], 张炯炯 [1], 罗归一 [1], 陈海英 [1],
[1] 江南大学

对黑莓果进行微波真空干燥,比较不同微波功率和不同真空度对黑莓干燥过程中温度的影响。采用数值模拟的方法,建立电磁与传热的耦合模型,经过2min的微波真空加热,得出不同微波功率、不同真空度下黑莓的仿真温度场分布图,并比较仿真与实验结果,通过仿真,观察到加热冷点位置并规避,减少热点位置的温度不均匀性。模拟与实验结果一致性高,表明模拟可以很好的仿真实验过程,并对微波干燥过程中不同时间和空间的温度场进行分析,保证黑莓微波真空干燥的温度均匀性和品质。 Saiba Mais

致密储层压裂开发有效缝长(改造体积)定量分析与评价

张启涛 [1], 朱维耀 [1], 岳明 [1], 刘昀枫 [1], 陈震 [1], 刘雨薇 [1],
[1] 北京科技大学

在页岩或致密储层油气开发过程中,水力压裂技术得到了广泛引用。在传统的油藏数值模拟中,裂缝参数如导流能力等一般是给定值,而在低渗致密储层实际开发过程中,受铺砂浓度等影响,压裂裂缝只有部分发挥增产效果,可以称之为有效裂缝。 考虑铺砂浓度随裂缝长度的变化关系,基于COMSOL地下水模块和裂隙流模块,建立了致密砂岩储层压裂开发渗流数值模型。模型通过对达西定律模型进行修改,以考虑启动压力梯度对渗流规律的影响。同时针对致密储层的两种裂缝形态:经典长缝和网状体积缝,分别进行了有效缝长和有效改造体积的定量分析与评价。 本文从铺砂造缝,储层特性 ... Saiba Mais

A triple band cross-polarization converter based on ultra-thin graphene-integrated metasurface

Zhifei Yao [1], Yueke Wang [1], Shumei Gao [1],
[1] Optical Information Science and Technology Department, Jiangnan University, Wuxi, Jiangsu, china

We propose a triple band tunable and high-efficient reflected cross-polarization converter (CPC) in the mid-infrared. The study of graphene-integrated CPC becomes increasingly important, due to its tunable optical performance and small volume. Graphene, a monolayer of carbon atoms placed ... Saiba Mais

电容成像检测技术研究与分析

李振 [1], 毛冬麟 [1], 李晨 [1], 路鹏 [1],
[1] 中国石油大学(华东),青岛,中国

引言:电容成像检测技术是一种新型的无损检测技术,它是利用一对共面电极板之间产生的准静态边缘电场对缺陷进行检测,电容成像探头的形状是成像性能的关键因素,据此设计了点对点三角形探头(A型)、边对边三角形探头(B型)、正方形探头(C型)和圆形探头(D型),如图1所示,并利用 COMSOL Multiphysics® 对它们的性能进行分析。 计算方法:通过 COMSOL Multiphysics 软件的 AC/DC 模块对电容成像探头的电容值、电势分布和灵敏度进行研究。仿真中用到了“静电(es)”接口。 结果:仿真得到了四种电容成像探头的电容值(图2)、电势分布图(图3 ... Saiba Mais

单相变压器损耗与温升仿真分析

沙瑞 [1], 韩天衡 [1], 王斌 [1],
[1] 天津工业大学,天津,中国

随着城市用电量的逐年增加,单相变压器连续运行时的损耗发热严重制约了其发展和应用。高温发热会加速绝缘老化和缩短设备使用寿命,甚至导致一系列故障问题,降低设备的可靠性。该问题涉及电-磁-热多物理场耦合,心损耗温升的准确计算至关重要,为此本文基于硅钢片磁化特性的测量数据,考虑铁心磁特性受应力影响,采用 COMSOL Multiphysics 多物理场仿真软件,通过 AC/DC 模块、固体力学模块和传热模块对单相变压器铁心的磁场、应力、损耗和温升分布进行研究。首先施加激励得到铁心磁场及损耗密度分布,最后将损耗值作为温度场的热源,进而计算铁心的温升分布 ... Saiba Mais