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.
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3D-FEA of the Relationship between the Occiput and Sphenoid in the Osteopathic Paradigm - new

Y. Chiesa[1]
[1]Istituto Superiore di Osteopatia, Milan, Italy

The concept of cranial Primary Respiratory Mechanism (MRP) is used by osteopathic practitioners to explain the perceptual characteristics arising from the clinical palpation approach of the human skull. The theoretical apparatus and the same MRP existence is always element of controversy among the scientific community. The results arising from this study highlight the intrinsic capability of ...

Investigation on MEMS Based Thermal Sensor for Cancer Detection

A. V. Lakshmi[1], K. C. Devi[1]
[1]PSG College of Technology, Coimbatore, Tamil Nadu, India

This paper presents the design and simulation of a thermal sensor using COMSOL Multiphysics® software for the detection of low body temperature syndrome which can allow the early detection of cancer. This sensor is made of an alloy consisting of two materials with different coefficients of thermal expansion. The main objective of this work is to investigate the structural change in the sensor ...

Modeling of Asphaltenes and Oil Shale Pyrolysis - new

J. P. Mmbaga[1], F. Munoz[2], S. Dhir[1], R. Gupta[1], R. E. Hayes[1], M. Toledo[2]
[1]University of Alberta, Edmonton, AB, Canada
[2]Departamento de Ingenieria Mecanica, Universidad Tecnica Federico Santa Maria, Valparaiso, Chile

Pyrolysis is a key step in the conversion of carbonaceous materials into useful products. In this study, we investigate the pyrolysis of asphaltene and oil shale, both experimentally and numerically. COMSOL Multiphysics® software is used to model the combined effects of fluid flow in porous media, mass transfer of species, heat transfer, and reaction kinetics. Gas evolution and the porosity ...

COMSOL Modelling for Li-ion Battery Diagnostics

P. Singh [1], N. Khare [2], P. K. Chaturvedi [3],
[1] Banasthali University, Rajasthan, India
[2] EOS Energy Storage, Edison, NJ, USA
[3] SRM University, Ghaziabad, Uttar Pradesh, India

Li-ion battery is being used as power source for various applications. Smart battery diagnostics is essential for creating a better control over the energy storage system and cycle life of a Li-ion battery. It is especially required for real time applications, where more power and energy demand together with an extended lifetime is critical. In this paper, under battery diagnostics, the ...

Simulation of an AlN Thin Film Resonator for High Sensitivity Mass Sensors

M. Maitra [1], H. B. Nemade [1], S. Kundu [1],
[1] Indian Institute of Technology Guwahati, Guwahati, Assam, India

The objective of this paper is to show the simulation of a piezoelectric thin film device and its application as a sensor. Piezoelectric aluminum nitride thin film clamped at two ends is simulated using COMSOL Multiphysics software. The device consists of the piezoelectric thin film suspended on a cavity etched on a silicon substrate. Two metal electrodes are placed at the two fixed sides of the ...

Modeling Thermo-Fluid Dynamics of a Processing Unit of the Fast-track Trigger for ATLAS

N. Delmonte [1], P. Cova [1], A. Lanza [2], P. Giannetti [3], A. Annovi [3], S. Daniele [4], ,
[1] University of Parma and Istituto Nazionale di Fisica Nucleare - Sezione di Pavia, Pavia, Italy
[2] Istituto Nazionale di Fisica Nucleare - Sezione di Pavia, Pavia, Italy
[3] Istituto Nazionale di Fisica Nucleare - Sezione di Pisa, Pisa, Italy
[4] University of Parma - Department of Information Engineering, Parma, Italy

We describe the thermal modeling of a crate hosting boards with Associative Memories (AM) designed for the Fast Tracker Trigger (FTK) system of the ATLAS detector at the CERN Large Hadron Collider. FTK is a highly paralleled hardware system designed to provide global tracks reconstructed in the inner detector. The hardware system is based on AM for pattern recognition and fast FPGAs for track ...

FEM Analysis of MEMS Capacitive Presure Sensor with Segmented Boss Structure for Diaphragm

A. K. Ramesh [1], P. Ramesh [1],
[1]College of Engineering Munnar, Munnar, Kerala, India

Microelectromechanical system (MEMS) based capacitive pressure sensor designs with improved sensitivity is always a matter of great concern and the recent developments in such a design is the MEMS capacitive pressure sensor with bossed diaphragm.The bossed diaphragm model improves sensitivity but it compromises the range of operation which lead to a new design with the segmented boss structure. ...

电力母线板稳态、瞬态多物理场模型差异分析

程屾 [1], 刑燕好 [1]
[1] 沈阳工业大学,沈阳,中国

随着电力工业的快速发展,母线板作为汇集、分配和传送电能的装置,广泛应用于各个电工领域。由于流过母线板的电流一般较大,其温升发热问题不容忽视。该问题涉及电磁场、温度场、流场及位移场等多个物理场的综合。为了更好地研究其发热散热问题,本文采用 COMSOL Multiphysics® 多物理场直接耦合分析软件,基于有限元理论,在考虑设备几何形状和材料物理特性影响的基础上,对母线板进行三维建模。分别在瞬态和稳态情况下对母线板进行电—热—力耦合场分析,电—热—流耦合场分析,从而研究母线板的温度、电流密度分布规律和由于热膨胀引起的形变大小。最后加入层流,分析在考虑气流冷却效应时,母线板的散热情况,并对仿真结果进行研究分析。

Design and Analysis of Stacked Micromirrors

S. Park, S. Chung, and J. Yeow

University of Waterloo, Systems Design Engineering, Waterloo, Ontario, Canada

A micromirror or a torsional actuator in general has been proven to be one of the most popular actuators fabricated by Micro-Electro-Mechanical System (MEMS) technology in many industrial and biomedical applications such as RF switches, a laser scanning display, an optical switch matrix, and biomedical image systems. In this paper, two stacked micromirrors are presented and analyzed to show ...

Optics at the Nanoscale: Merging Nanoparticles with Light

Naomi Halas
Professor of Electrical and Computer Engineering, Chemistry and Bioengineering,
Rice University, Houston, TX, USA

Dr. Naomi Halas is currently Professor of Electrical and Computer Engineering, Chemistry, and Bioengineering at Rice University. She is the inventor of nanoshells, nanoparticles with optical resonances spanning the visible and infrared regions of the spectrum. She is co-founder of a company developing nanoshell-based cancer therapy. She is author of more than 150 refereed publications, more than ...