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 abramgem 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.

Evaluating Thermo-Mechanical Stress Due to Surface Grinding on a Sensor Integrated Workpiece - new

M. Sarma [1], M. Reimers, G. Dumstorff [1], W. Lang [1]
[1] Institute for Microsensors, -Actuators and –Systems (IMSAS), University of Bremen, Dept. 1: Physics / Electrical Engineering, Germany

Sensor integration in a workpiece can be used to characterize manufacturing processes but due to integration, a foreign element is added to the material which can alter its material properties [1]. This can lead to a high order of measurement uncertainty. Additionally, the extent of deviation from standard behavior may vary depending on how the sensors are embedded into the material. This report ...

Time-Domain Model of the Inner Ear to Study Nonlinear Responses - new

K. Gladine [1], J. Soons [1], J. Dirckx [1]
[1] University of Antwerp, Belgium

The ear doesn’t solely listen but it also speaks. Sounds formed in the inner ear which are measurable in the outer ear are called Otoacoustic emissions (OAEs). Some claim these are produced by the outer hair cells (OHCs), the amplifiers in the inner ear. Our hypothesis is that the OHCs only amplify distortion products (DPs) but do not produce them.

Simulation of Gas Injection with the Level Set Method - new

J. E. Rivera-Salinas [1], A. Cruz-Ramírez [1]
[1] National Polytechnic Institute - ESIQIE, Department of Metallurgy and Materials, Mexico

The physical mechanisms that operate in gas injection are complex, since the bubble formation at submerged orifices involves a wide range of length and time scales, bubble coalescence occurs, rapid pressure variations around the gas bubble produce the wobbling of the bubble, as well as the high velocities involved in the bubble bursting phenomenon on the free surface, among the others. In this ...

Micro-ARES, the Electric Field Sensor for ExoMars 2016: Atmospheric Interaction Simulations - new

G. Déprez [1], S. Cardnel [2], O. Witasse [2], F. Montmessin [1], F. Cipriani [2], A. J. Ball [2], F. Esposito [3]
[1] CNRS-LATMOS, Guyancourt, France
[2] ESA-ESTEC, Noordwijk, Netherlands
[3] INAF-OAC, Naples, Italy

Since 2011, LATMOS has been involved in the development of Micro-ARES, an electric field sensor forming part of the DREAMS science payload of the ExoMars 2016 Schiaparelli entry, descent and landing demonstrator module (EDM). Micro-ARES is dedicated to the very first measurement and characterization of Martian atmospheric electricity. The instrument, a compact version of the ARES instrument ...

Evaluation of the Lightning Strikes on Carbon Fibers Panels for Aircraft Structural Parts - new

B. De Vivo, P. Lamberti, G. Spinelli, V. Tucci
Depart. of Inform. Eng., Electr. Eng. and Appl. Math. – DIEM, University of Salerno, Italy

Airliners are often subjected to dangerous atmospheric and weather hazards among which lightning strikes represent a threat for flight safety. Recently, the use of Carbon Fibers Reinforced Composites as structural parts in aircrafts as an alternative to traditional metallic materials. Unfortunately, most composites are not able to dissipate lightning currents as the traditional metals. Such ...

Simulating Experiments with the COMSOL Application Builder for Teaching Scientific Research Methods - new

A. W. M. van Schijndel [1],
[1] Eindhoven University of Technology, Netherlands

The scientific method requires techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge [1]. The Oxford English Dictionary defines the scientific method as "a method or procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, ...

COMSOL Multiphysics® Simulation of the Electrokinetic Effect in Gidrogeology - new

M. A. Narbut [1], K. V. Titov [1], P. K. Konosavsky [1],
[1] Saint Petersburg State University, Saint Petersburg, Russia

The groundwater flow is accompanied by the electric field with potential called usually the streaming potential or the Self-Potential (SP) to be measured on the ground surface (e.g., Rizzo et al., 2004; Bolève et al., 2007; Jardani et al., 2009). We studied numerically the SP signals associated with pumping test experiments in layered aquifers using COMSOL Multiphysics® software and GWFGEM ...

Electrochemical Li-Ion Battery Modelisation for Electric Vehicles - new

A. Falconi [1], D. Sicsic [2], R. Cornut [3], C. Lefrou [4]
[1] Renault s.a.s, CEA/DSM/IRAMIS/NIMBE/LICSEN, Université de Grenoble Alpes, Grenoble, France
[2] Renault s.a.s, Renault technocentre, Guyancourt, France
[3] CEA/DSM/IRAMIS/NIMBE/LICSEN, Gif Sur Yvette Cedex, France
[4] Université de Grenoble Alpes, LEPMI, CNRS, Grenoble, France

The future development of electric vehicles is now strictly linked with their batteries. In parallel of the actual research focused on the development of new materials and increase their performances in terms of energy, power, cost, durability and weight, it is necessary to develop modeling tools. The simulations are helpful for improving the knowledge of both physical and chemical phenomena, ...

A COMSOL Multiphysics® App for the Thermal Analysis of Electronic Devices - new

G. Petrone [1], C. Barbagallo [1], M. Scionti [1],
[1] BE CAE & TEST, Catania, Italy

Among the new features introduced by the latest versions of COMSOL Multiphysics® software, the opportunity of building up customized model interfaces by exploiting the Application Builder is for sure one of the most promising. Arising from this concept, the Certified Consultant BE CAE & Test presents a COMSOL app to analyze the thermal behavior of an electronic Surface-Mount Device (SMD). The ...

RF Magnetic Field Simulation of a Novel Planar DNP-NMR Coil - new

A.I. Dimitriadis [1], M. Soundararajan [1], D. Yoon [1], E. de Rijk [2], J.-Ph. Ansermet [1]
[1] Institute of Condensed Matter Physics, Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne, Switzerland
[2] SWISSto12 SA, Lausanne, Switzerland

INTRODUCTION: Nuclear magnetic resonance (NMR) spectroscopy is a broadly used research technique that exploits the magnetic properties of atomic nuclei with non-zero spin in order to determine the physical/chemical properties of the molecules in which they are contained. However, NMR has fundamental sensitivity limitations, as a consequence of the small energy difference between nuclear spin ...

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