I. Neitzel, R. C. F. do Nascimento, C. C. Bueno
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 ...
COMSOL® Implementation of a Viscoelastic Model with Cure-Temperature-Time Superposition for Predicting Cure Stresses and Springback in a Thermoset Resistant
 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 ...
E. Giuri, A. Ricci, and S.L. Marasso
Politecnico di Torino, Materials Science and Chemical Engineering Department, Turin, Italy
In this work, time dependent thermal analyses, performed on the 3D FE model of a multilevel Lab on Chip (LOC) platform are executed in order to gain insight into the temperature distribution within the device. By means of the COMSOL Multiphysics CAD import module, an extremely close 3D reproduction of the actual device, allowing to probe temperatures in those regions where an experimental ...
O. Ecin, M. Malek, B. J. Hosticka, and A. Grabmaier
Chair for Electronic Components and Circuits
University of Duisburg-Esse
In this work the authors report on a CFD simulation of a pipe flow model. Fluid mechanics are here combined with heat transfer phenomena. To create a mathematical model of a pulsed hot wire system i.e., the thermo-fluidic impulse response of a pulsed hot wire, a simulation model is going to be analyzed which describes the impulse response according to the physics from thermodynamics. The ...
G. Tracanelli, M. Culos
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 ...
A. Samba, N. Omar, H. Gualous, Y. Firouz, O. Capron, M. Abdel MonemO, J. Smekens, P. Van den Bossche, J. Van Mierlo
VUB ETEC, Brussel, Belgium and UCBN, LUSAC, Cherbourg, France
VUB ETEC, Brussel, Belgium
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 ...
N. Martaj[1,2], E. Guidicelli, Y. Cuminal, A. Perona, S. Pincemin[1,2]
EPF-Ecole d’Ingénieurs, Montpellier, France
IES, UMR5214, Université Montpellier II, Montpellier, France
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 ...
A. Pellegrini, A. Beucci, and F. Costa
ALTRAN Italia, Pisa, Italy
In this paper a methodology for calculating the infrared signature of complex objects is presented. The transient thermal analysis allows us to evaluate the temperature distribution on the investigated object, pointing out which parts tend to be warmer. These temperature values are handled in the post processing phase in order to evaluate the zero range radiance distribution and the radiance of ...
Using COMSOL to Estimate the Heat Losses of Composite Panels Undergoing Repairs Using Bayesian Inference
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 ...
A. Rojas-Morín, Y. Flores-Salgado, A. Barba-Pingarrón, R. Valdéz-Navarro, F. Mendéz, O. Alvarez-Brito, M. Salgado-Baltazar
Facultad de Ingeniería, Universidad Nacional Autónoma de México, Ciudad Universitaria, D.F. México
DGTIC, Universidad Nacional Autónoma de México, Ciudad Universitaria, D.F. México
Programa de Posgrado en Ingeniería, Universidad Nacional Autónoma de México.
In this paper, we simulated the heating of a work piece by coupling two heat sources. Concentrated solar energy was applied at the bottom of the work piece, which generated a heat flux from the parabolic solar dish concentrator. Subsequently, induction heating was applied, which generated Eddy currents that circulated through the work piece and heated the surface of the material. A numerical ...