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.

Heat Generation Modeling of Two Lithium Batteries: from the Cell to the Pack in COMSOL Multiphysics® Software

J. Stoudmann [1], R. Rozsnyo [1], T. Mackin [2], J. Dunning [2]
[1] Haute École du paysage, d'ingénierie et d'architecture, Genève, Switzerland
[2] California Polytechnic State University, San Luis Obispo, CA, USA

A thermal model to predict the heat generation during the charge and discharge of a battery pack is an essential tool to manage the thermal behavior, performance and life of the batteries. In this work, a battery cell is modeled in COMSOL Multiphysics® using the Batteries and Fuel Cells module.

Current Density Distribution and Material Removal Behavior on the Graphite/Iron-matrix Interface in Cast Iron Under Pulse Electrochemical Machining Conditions

O. Weber[1], R. Kollmannsperger[2], D. Bähre[2]
[1]Center for Mechatronics and Automatization, Saarbrücken, Germany
[2]Institute of Production Engineering, Saarland University, Saarbrücken, Germany

The Pulse Electrochemical Machining is especially suitable for the precise production of complex geometric contours with high precision and high surface quality demands in workpieces in series manufacturing. During this process, the negative structure of an electrode is copied to the workpiece without sub-surface damages. An adequate knowledge of the current density distribution and thus of the ...

Modeling Galvanic Corrosion

E. Gutierrez-Miravete[1], M. Turner[2]
[1]Rensselaer at Hartford, Hartford, CT, USA
[2]General Dynamics-Electric Boat, Groton, CT, USA

Galvanic corrosion is encountered in marine applications because one often has dissimilar metal joints and seawater acts as an electrolyte. One metal acts predominantly as anode and undergoes material dissolution while the other acts predominantly as cathode and is the site where a cathodic reaction takes place. Assuming a stagnant electrolyte, the equation governing the distribution of ...

Simplified Multiphysics Model for All-Solid State Microbatteries

M.S. Nesro[1], I.M. Elfadel[1]
[1]Masdar Institute of Science and Technology, Masdar City, Abu Dhabi, UAE

Lithium microbatteries are replacing conventional power sources in many microsystems areas such as wireless sensors and biomedical monitors. In many of these applications, compact models of micro batteries are needed both at the microsystems design stage and at the real-time power management stage. These compact models are typically derived from physics-based discretized formulations. We have ...

Modeling Polybenzimidazole/Phosphoric Acid Membrane Behaviour in a HTPEM Fuel Cell

C. Siegel[1,2], G. Bandlamudi[1,2], and A. Heinzel[1,2]
[1]Zentrum für BrennstoffzellenTechnik (ZBT) gGmbH, Duisburg, Germany
[2]Institut für Energie- und Umweltverfahrenstechnik, University of Duisburg-Essen, Duisburg, Germany

Phosphoric acid doped polybenzimidazole (PBI) membranes are commonly used in today’s high-temperature polymer-electrolyte-membrane (HTPEM) fuel cell technology. COMSOL Multiphysics is used to model and simulate the three-dimensional, single-phase, non-isothermal overall cell behaviour at different operating points. The sol-gel PBI/H3PO4 membrane behaviour is modeled using an Arrhenius ...

Charge-Discharge Studies of Lithium Iron Phosphate Batteries

A. K. R. Paul [1], R. D. Pal [2],
[1] CSIR-Central Electrochemical Research Institute, Karaikudi, Tamil Nadu, India
[2] Academy of Scientific and Innovative Research, Chennai, Tamil Nadu, India

A lithium-ion battery comprises of two intercalating electrodes separated by a membrane, sandwiched between aluminum and copper current collecting plates. The battery performance depends upon several parameters and its operating conditions. In this work we developed a model for a lithium iron phosphate battery and validated our results with experimental charge-discharge curves. We however note ...

Analysis of Electro-Thermal Hot Spot Formation in Li-Ion-Battery-Cells

W. Beckert[1], C. Freytag[1], T. Frölich[1], G. Fauser[1]
[1]Fraunhofer IKTS, Dresden, Germany

The presented model approach offers a computational efficient tool to analyze the influences of geometrical design details, material selection and operational conditions on the electro-thermal behavior of a full Li ion battery cell geometry. It considers typical aspects as anisotropic winding structure, electro-thermal coupling and nonlinear electrical characteristics for moderate computational ...

Modeling the Electroplating of Hexavalent Chromium

N. Obaid[1], R. Sivakumaran[1], J. Lui[1], A. Okunade[1]
[1]University of Waterloo, Waterloo, ON, Canada

This project modeled an industrial chromium plating process for automotive components. The process was modeled via the COMSOL Multiphysics® Electrodeposition Module. The simulation examined the effect of solution conductivity, electrode spacing, and anode height utilizing a factorial design approach. A sensitivity analysis was used to study the effect of these variables on the thickness value at ...

Parameter Estimation in a Single Particle Model Using COMSOL Multiphysics® Software and MATLAB® Optimization

B. Rajabloo [1], M. Désilets [1], Y. Choquette [2],
[1] Département de Génie Chimique et de Génie Biotechnologique, Université de Sherbrooke, QC, Canada
[2] Institut de recherche d’Hydro-Québec, Varennes, QC, Canada

When it comes to study the behavior of the secondary batteries, physics-based models are more representative of the real behaviour than equivalent circuit models, especially for the estimation of the life and capacity fading. On the other hand, the complexity and computational cost of sophisticated physics-based models like pseudo two-dimensional (P2D) models justify the use of more simplified ...

CFD Modeling and Analysis of a Planar Anode Supported Intermediate Temperature Solid Oxide Fuel Cell - new

N. Lemcoff[1], M. Tweedie[2]
[1]Rensselaer Polytechnic Institute Hartford, Hartford, CT, USA
[2]Enthone, West Haven, CT, USA

A planar anode-supported intermediate temperature solid oxide fuel cell operating on syngas fuel at 750°C was analyzed in this study. The effects of varying syngas fuel inlet compositions on species and temperature distributions, water gas shift reaction rate, potential for carbon formation and electrochemistry were considered. A 2-D COMSOL® model was developed which included separate defined ...