Technical Papers and Presentations

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.

3-Dimensional Blood Cooling Model inside a Carotid Bifurcation

R. Sikorski[1], T. Merrill[1]
[1]Rowan University, Glassboro, NJ, USA

Stroke is caused by an interruption of brain blood supply and is one of the leading causes of death and disability. A mild reduction of 2-5°C in tissue temperature through hypothermia has shown reduced tissue infarct size, increased tissue recovery, and positive neurological effects. This paper seeks to predict the outlet blood temperature in the common carotid bifurcation branches. In our ...

Stirling Engine Simulation: Non-isothermal Flow / Structure Interaction

N. Martaj1, P. Rochelle1, L. Grosu1, R. Bennacer2, and S. Savarese3
1LEEE, Université Paris X, Ville d'Avray, France
2Laboratoire Environnement, Energétique, Valorisation, Matériaux (LEEVAM), Université de Cergy-Pontoise, Neuville-Sur-Oise, France
3COMSOL France, Paris, France

The reciprocating thermal engine of Stirling type, with its varied external heat sources and efficiency improving regenerator, is an alternate solution to be taken into account for efficient power applications of renewable energies. Work and efficiency of this machine is strongly dependent on geometrical and physical parameters such as dimensions, heat transfer coefficients, heat source ...

Heat Transfer Model for Embedded Thermocouple in Firefighter Glove

D. Mrugala, T. Riebeck, and W. Lang
Institute for Microsensors, -actuators and –systems (IMSAS)
University of Bremen
Bremen, Germany

The Integration of contact heat measurement with intelligent fire fighter gloves assumes parametric simulations with the heat transfer module of COMSOL. A thermocouple is embedded into high temperature protective layers of the glove and measures contact heat. This is done by by pressing the hand backside of the glove against a hot device like a door. The Heat transfer module has been used to ...

Human Torso Model for Heat Transfer Analysis

X. Xu[1], T. Patel[1], R.W. Hoyt[1]
[1]U.S. Army Institute of Environmental Medicine, Natick, MA, USA

A human torso model was created for heat transfer analysis. The torso was derived from the ‘Virtual Family’ whole-body voxel data from the ITIS Foundation (Zurich, Switzerland). Measurements were taken from the ITIS male along the axial plane at key anatomical landmarks and used to develop geometry in Solidworks. Individual components were created to represent the skin, fat, muscle, and bone ...

Negative Thermal Expansion Materials: Thermal Stress and Implications for Composite Materials

M.J. Jakubinek[1,2], C.A. Whitman[2,3], and M.A. White[1,2,3]
[1]Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia, Canada
[2]Institute for Research in Materials, Dalhousie University, Halifax, Nova Scotia, Canada
[3]Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada

There is considerable interest in the possibility of combining NTE materials with normal (positive) thermal expansion materials, to reduce the potential of failure of a material or component due to thermal stress fracture. Finite element analysis (FEM) is used to explore the overall expansion and thermal stress in composites.

Transient Conjugate Optical-thermal Fields in Thin Films Irradiated by Moving Sources: A Comparison between Back and Front Treatment

N. Bianco[1], O. Manca[2], and D. Ricci[2]
[1]Dipartimento di Energetica, Termofluidodinamica applicata e Condizionamenti ambientali, Università degli Studi di Napoli Federico II, Napoli, Italy
[2]Dipartimento di Ingegneria Aerospaziale e Meccanica, Seconda Università degli Studi di Napoli, Aversa (CE), Italy

A two dimensional instationary analysis of the conjugate optical-thermal fields induced in a multilayer thin film structure on a glass substrate by a moving Gaussian laser source is carried out numerically in order to compare back and front laser treatment processes. COMSOL Multiphysics 3.4 code has been adopted to solve the combined thermal and electromagnetic problem in order to compare the two ...

Modeling a Cooling Skylight

M. Fält, and R. Zevenhoven
Thermal and Flow Engineering Laboratory, Department of Chemical Engineering
Åbo Akademi University
Turku
Finland

Air-conditioning produced by traditional vapor compression cycle is an energy demanding operation. By using passive cooling methods is it possible to avoid, or at least reduce, the need for vapor compression cooling. A passive radiative cooling method could be a three windowed skylight, filled with a greenhouse gas. Earlier modeling of such a skylight has shown promising results, and work has ...

Inductive Heating Modelling with a Temperature-controlled Material

Hemous, R.
RocTool, France

Roctool is a company which develops and sells some process to heat and transform composite materials very quickly. One of these, the Cage System®, uses an inductive heating process which heats instantaneously the tooling surface of the mold, where the composite we want to transform is put. The thermal diffusion in the mass mold is reduced relative to other means of heating.

Simulation of Heat-induced Fusing of Polymer Toner

Hoffmann, R.
Océ Printing Systems GmbH, Poing

The electrophotographic print process uses polymer toner particles to create the desired print image on the paper. After depositing the particles on the paper, the particle layer has to be heated beyond the glass point of the polymer to create a homogeneous layer. This fusing process is one of the most energy-consuming parts of the whole print process. It is therefore imperative to limit the ...

Thermal Analysis of Vacuum Distillation Chamber in Pyroprocessing Facility

D. Sujish, S. Agarwal, B. Muralidharan, B.K. Sharma, V. Suresh Kumar, B. Prabhakara Reddy, G. Ravisankar, K. Nagarajan, C.A. Babu, and P. Kalyanasundaram
Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, India

Non aqueous metal fuel reprocessing involves electrochemical deposition of spent metallic fuel on the cathode of an electrolytic cell. Apart from metal fuel, the cathode deposit would also contain occluded molten salts and liquid cathode. Subsequent purification and consolidation of these heavy metals is conducted in a vacuum retort. Here the cathode deposits are charged into graphite crucible ...

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