Ici vous trouverez les présentations issues des Conférences COMSOL à travers le monde. Réalisées par des utilisateurs de COMSOL Multiphysics, ces présentations explorent tous les domaines actuels d'innovation. Les applications couvrent pratiquement tous les secteurs industriels et impliquent des phénomènes électriques, mécaniques, fluidiques et chimiques. Utilisez la recherche rapide pour trouver les présentations les plus intéressantes dans votre domaine d'intérêt.

Thermal and Fluid Dynamics Studies Applied to Steel Industry

G. Tracanelli[1], M. Culos[1]
[1]Studio di Ingegneria Industriale Tracanelli, San Vito al Tagliamento, Italy

The energy pay back is one of the most interesting field especially in the steel industry where this contribution is strictly connected to steams and emissions inside and outside the plant. Perhaps, this application is sometimes disturbed by a strong variation of emissions (\"off gas\"). One example is the arc furnace where the process is very discontinuous and there are many fluctuations in the ...

Heat-Sink Solution through Artificial Nanodielectrics for LED Lighting Application

N. Badi[1], R. Mekala[2]
[1]Department of Physics, Center for Advanced Materials, University of Houston, Houston, TX, USA
[2]Department of Electrical & Computer Engineering, University of Houston, Houston, TX, USA

Thermally conducting but electrically insulating materials are needed for heat-sink LED lighting applications. We report on a cost effective and innovative method based on creating core-shell nanoparticles in polymer with aluminum (Al) nanoparticles as the high thermal conductivity core and ultrathin aluminum oxide (Al?O?) as a capping shell. The solid oxide shell around the Al core prevents ...

Study of the Thermal Behavior of Solar Cells Based on GaAs

N. Martaj[1,2], E. Guidicelli[2], Y. Cuminal[2], A. Perona[3], S. Pincemin[1,2]
[1]EPF-Ecole d’Ingénieurs, Montpellier, France
[2]IES, UMR5214, Université Montpellier II, Montpellier, France
[3]Laboratoire PROMES-CNRS Tecnosud, Rambla de la thermodynamique, Perpignan, France

The paper studies the thermal modeling and simulation of photovoltaic cells suitable for use in highly concentrated solar flux (> 1000 suns). The cells studied are those of GaAs kind. These cells are a very good alternative to be studied instead of more complex multi junctions cells. The objective is to find a simple and inexpensive way to remove heat from PV modules and to keep the electrical ...

Statistical Sensitivity Analysis of Li-ion Pouch Battery Cell Dimension and Design

A. Samba[1], N. Omar[2], H. Gualous[3], Y. Firouz[2], O. Capron[2], M. Abdel MonemO[2], J. Smekens[2], P. Van den Bossche[2], J. Van Mierlo[2]
[1]VUB ETEC, Brussel, Belgium and UCBN, LUSAC, Cherbourg, France
[2]VUB ETEC, Brussel, Belgium
[3]UCBN, LUSAC, Cherbourg, France

Multi-Scale and Multi-Dimensional (MSMD) modeling approaches have been proposed to simulate the thermal, electrical distributions and concentration behaviors of large size pouch cell. This approach is based on coupling of the energy balance with the Newman’s electrode model. Newman’s 1D electrochemical model is often used for small size batteries but not sufficient enough for large size where ...

Numerical Analysis of the Self-Heating Behaviour of Coal Dust Accumulations - new

D.Wu[1], E. Van den Bulck[1]
[1]Katholieke Universiteit Leuven, Department of Mechanical Engineering, KU Leuven, Belgium

Introduction Self-heating behaviour of dust accumulations is a multiphysics field coupled heat and mass transfer in the porous media. A typical experimental apparatus with a hot storage oven and mesh wire baskets has been taken as the study object. The influence of gas flow velocity, oxygen concentration and ambient temperature on the self-heating behaviour of the dry coal dust sample has been ...

Heat Transfer and Working Temperature Field of a Photovoltaic Panel under Realistic Environmental Conditions - new

E. Ruiz-Reina[1], M. Sidrach-de-Cardona[1], M. Piliougine[1]
[1]University of Málaga, Málaga, Spain

The aim of this work is the numerical study, by finite element analysis using COMSOL Multiphysics®, of the heat transfer and working temperature field of a photovoltaic panel under realistic wind and irradiation conditions. It is well-known that a great portion of the solar radiation absorbed by a photovoltaic module (typically 85% of the incident radiation) is not converted into electrical ...

COMSOL® Implementation of a Viscoelastic Model with Cure-Temperature-Time Superposition for Predicting Cure Stresses and Springback in a Thermoset Resistant

B. Patham[1]
[1] General Motors Global Research and Development, India Science Lab, GM Technical Centre India.

Multi-physics simulations of the evolution of cure induced stresses in a viscoelastic thermoset polymeric resin are presented. The viscoelastic material model is implemented with a relaxation spectrum with 34 relaxation time constants. The trends in viscoelastic stresses at different degrees of cure and temperatures are compared and contrasted with an equivalent cure–dependent (but ...

Using COMSOL to Estimate the Heat Losses of Composite Panels Undergoing Repairs Using Bayesian Inference

A. Emery[1]
[1]University of Washington, Seattle, WA, USA

Composite repairs involve applying a prescribed heat flux which must be adjusted to account for heat losses. These losses must be estimated. Parameter estimation requires a knowledge of sensitivities. This is often done using finite differences. As shown in the figure, substantial errors often occur. The paper describes the use of the PDE features of COMSOL to obtain much more accurate values by ...

An Approach to Modeling Vacuum Desorption - new

C. F. Gomez[1], R. Schunk[1], R. F. Coker[1], J. Knox[1]
[1]NASA Marshall Space Flight Center, Huntsville, AL, USA

The objective of this simulation effort is to develop a mathematical model of vacuum desorption on a POC (Proof of Concept) canister loaded with Zeolite 13X/5A . This canister contains a pelletized adsorption bed which is used to adsorb H2O and CO2. Once this bed is fully saturated with an equilibrium loading, desorption is then accomplished by reducing the pressure to near vacuum. This type of ...

Influência das Condições Ambientais Sobre a Umidade e Temperatura em Bobinas de Cartão - new

I. Neitzel[1], R. C. F. do Nascimento[1], C. C. Bueno[1]
[1]Faculdade de Telêmaco Borba - FATEB, Telêmaco Borba, Paraná, Brasil

Neste trabalho é analisado o comportamento dos perfis de temperatura e umidade e sua penetração em bobinas de papel submetidas a longos períodos de armazenagem. O modelo considera a transferência simultânea de calor e massa com o efeito Soret, mas sem o efeito Latour. O sistema é fechado em relação à umidade e aberto em relação à energia. As propriedades térmicas são dependentes da umidade e ...