Technical Papers and Presentations

Here you will find presentations given at COMSOL Conferences around the globe. The presentations explore the innovative research and products designed by your peers using COMSOL Multiphysics. Research topics span a wide array of industries and application areas, including the electrical, mechanical, fluid, and chemical disciplines. Use the Quick Search to find presentations pertaining to your application area.

3D Simulation of Air-Glass Heat Exchange in a Set of Vials

G. Mongatti[1], A. Borelli[1]
[1]Marchesini Group, Pianoro, Italy

In this model a three-dimensional heat transfer analysis was performed by using COMSOL Multiphysics\' Heat Transfer Module. The model is about the heating of a set of vials (Figure 1) in a current of hot air in the laminar regime. We used time dependent studies to predict the thermal behavior of the glass and to estimate the temperatures in the various points of the bottles at various times. ...

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.

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

Application of COMSOL Multiphysics in the Study of Heat Transfer in Solids: Comparison with Measurements Obtained by Means of Infrared Photothermal Radiometry

V.M. Suárez Quezada[1], J.H. Wong[1], J.A. Calderón Arenas[1], E. Marín Moares[1], José Bruno Rojas Trigos[1], Antonio Gustavo Juarez Gracia[1], Jonathan F Guarachi solano[1]
[1]Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada Unidad Legaria del Instituto Politécnico Nacional, Mexico, Distrito Federal, Mexico

We report the use of Heat transfer Module of COMSOL Multiphysics and a technique based on Infrared Photothermal Radiometry to study the heat transfer of a homogeneous and isotropic solid material excited by a periodic laser beam on the front side of the sample, and one infrared detector on the rear side in order to obtain the evolution of difference of temperature with the time exposure. We use ...

3D Modeling and Simulation of the Thermal Performance of Solid Cyclotron Targets

M. A. Avila-Rodriguez1, J. A. Sader1, and S. A. McQuarrie1,2
1Edmonton PET Centre, Cross Cancer Institute, University of Alberta, Edmonton, AB, Canada
2Faculty of Medicine and Dentistry, Division of Oncologic Imaging, University of Alberta, Edmonton, AB, Canada

COMSOL Multiphysics was used to model and simulate the thermal performance of solid targets irradiated with charged particles.Results showed that materials with a high thermal conductivity to heat capacity ratio behave better in cooling dynamic systems requiring fast dissipation of heat.

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