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.

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 capacitive type sensor in door handle project which consists of a rectangular NFC-reader antenna of size 80mm x ...

Meshing Challenges in Simulating the Induced Currents in Vacuum Phototriode

S. Zahid [1], P. R. Hobson [1],
[1] Brunel University London, London, United Kingdom

Vacuum phototriodes (VPT) have been used as photodetectors for many years in particle physics experiments. For example, they were used in the OPAL experiment at LEP and are currently used in the endcap Electromagnetic Calorimeter of the CMS experiment, at CERN’s Large Hadron Collider. Existing VPTs are fast, low-gain devices that are able to operate in strong magnetic fields at angles up to ...

Tunable Metamaterial-Inspired Resonators for Optimal Wireless Power Transfer Schemes

A. X. Lalas [1], N. V. Kantartzis [2], T. T. Zygiridis [3], T. P. Theodoulidis [4],
[1] Information Technologies Institute, Centre of Research & Technology - Hellas, 6th km Harilaou - Thermi, Thessaloniki, Greece
[2] Department of Electrical and Computer Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece
[3] Department of Informatics and Telecommunications Engineering, University of Western Macedonia, Kozani, Greece
[4] Department of Mechanical Engineering, University of Western Macedonia, Kozani, Greece

The advent of wireless power transfer (WPT) technology has offered a gradually evolving research field with a multitude of triggering applications, like electric vehicles, bio-medical implants and wireless charging media for consumer electronics. However, since the initial establishment of its principal characteristics, instructive WPT efficiencies have been implemented only for rather small ...

Analysis of Mixing Chambers for the Processing of Two-Component Adhesives for Transport Applications

P. Steinert [1], R. Paul [1], I. Schaarschmidt [1], M. Zinecker [1], M. Hackert-Oschätzchen [1], Th. Muschalek [2], J. Esslinger [2], A. Schubert [1]
[1] Professorship Micromanufacturing Technology, Chemnitz University of Technology, Chemnitz, Germany
[2] Rublic+Canzler GmbH, Dresden, Germany

Two-component adhesives are commonly used for sealing and joining in transport applications for mechanically highly stressed connections. At the Chemnitz University of Technology an innovative system technology for the user-friendly, wireless and energy-efficient processing of two-component adhesives with electrical drive is developed. In this context, the simulation-based layout of main ...

Implementation of an Active Fluid Cooling Design in a 48 V High-Power Battery Module

Z. Wu [1], A. Stawarski [2], H. Kemper [2],
[1] Energy Storage Systems, FH Aachen - University of Applied Sciences, Aachen, Germany; RWTH Aachen University, Aachen, Germany
[2] Energy Storage Systems, FH Aachen - University of Applied Sciences, Aachen, Germany

Individual batteries have their own operational temperature ranges, which shall be respected to avoid both damaging of the cells and shortening of the cycle life. In terms of the Li-Ion cells, many of them do not function well at higher temperatures. Therefore, a better understanding of the thermal behavior of individual cells within a battery system, which can be achieved through simulation ...

Inverse Analysis of Soil Parameters Based on Deformation of a Bank Protection Structure

Y. Xing [1], R. Hu [2], Q. Liu [1],
[1] Geoscience Centre, University of Goettingen, Goettingen, Germany
[2] School of Earth Science and Engineering, Hohai University, Nanjing, China

Deformation prediction is an important part of the structure stability analysis. However, the deformation of bank protection structure which is affected by many factors, such as structural stiffness, earth pressure and hydrostatic pressure. It contains a complex mechanical process, which is a grey, fuzzy, stochastic and nonlinear engineering problem[1]. Neural network method as one of nonlinear ...

不同热质输入条件下的高温金属熔池特征

陈茹 [1], 赵尧 [1],
[1] 中国科学院力学研究所

激光激光沉积是激光增材制造的一种,激光照射靶材表面,同时合金粉末同步送入工件表面,激光与粉末相互作用,并在基体表面形成金属熔池,随着热源和粉末流的相对移动,熔池快速冷却,形成沉积道。该快速熔凝过程复杂,涉及传热(热传导与热对流)、流动、相变、质量添加、多组分传质、自由表面移动等。 本算例使用了传热模块、流动模块和组分传输模块,研究激光增材制造过程中的高温金属熔池的温度场、速度场和浓度场。分析表面张力、重力、等对熔池形成的影响;引入液相分数描述固液糊状区,在动量方程和能量方程中添加源项建立固液混合区的控制方程;采用动网格技术(ALE)实现移动自由界面;可添加组分传输模块研究特定成分在熔池中的扩散过程。 热量输入、质量添加和散热条件直接影响熔池的形貌特征和内部流动特征。着重分析了不同的热量分布及质量分布对熔池特征量的影响。比较了高斯分布、宽带分布(长宽比5:1)和线分布 ...

Study of the CO2 Transfer Rate in a Reacting Flow for the Refined Sodium Bicarbonate Production Process

C. Wylock[1], A. Larcy[1], P. Colinet[1], T. Cartage[2], and B. Haut[1]
[1]Université Libre de Bruxelles, Brussels, Belgium
[2]Solvay S.A., Brussels, Belgium

This work deals with the quantification of the CO2 transfer rate from a bubble to the surrounding liquid in a bubble column. A model is successfully developed using COMSOL Multiphysics. The validated model is used to study the enhancement influence of chemical reactions on the transfer rate. Moreover, the results of this study are compared with a classical 1-D approach and excellent comparison ...

Simulation of a Diesel Oxidation Catalyst Used in a NOx Storage and Reduction system for Heavy Duty Trucks

C. Odenbrand, and E. Senar Serra
Department of Chemical Engineering, Lund University, Lund, Sweden

This work concerns the performance of an oxidation catalyst used in a NOx storage and reduction system. The oxidation of NO is the main objective of this study, where the presence of CO and propene has also been taken into account. Experimental data has been determined on a monolithic oxidation catalyst mounted after a heavy duty diesel engine in a rig. The conversion of hydrocarbons is ...

Development of an Interlinked Curriculum Component Module for Microchemical Process Systems Components Using COMSOL Multiphysics

A. Mokal, and P. Mills

Department of Chemical and Natural Gas Engineering, Texas A&M University, Kingsville, TX, USA

COMSOL Multiphysics provides a powerful numerical platform where various models for microchemical process technology components can be readily created for both education and research. This modeling tool allows chemical engineering students to focus on understanding the effects of various microchemical system component design and operational parameters versus coding and debugging of the numerical ...