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.

Implicit Large Eddy Simulations of 2D Flow and Heat Transfer in Thermoacoustic Resonators

N. Martaj [1,2], S. Savarese [3], S. Kouidri [3], M. M. ALI [4,5]
[1] EPF Ecole d’ingénieurs, Montpellier, France
[2] Institut d'Electronique et des Systèmes, Université de Montpellier, Montpellier, France
[3] Armélio, Les Ulis, Courtabœuf, France
[4] LIMSI-CNRS, Orsay, France
[5] UPMC Univ Paris 06, Paris, France

The reduction of energy consumption in the building sector (nearly 40% of the energy consumption in Europe) is a real challenge to achieve the objective of the “2020 European climate and energy package”. In recent years, great interest is observed for the Stirling thermoacoustic machines. Nonlinearities due to the high level of acoustic pressure generate DC flows that are superimposed on the ...

Influence of Notches in Corners of Casement Windows on Stress Experienced in the Aluminum Profiles under Thermal Load

J. Arfaoui [1], L. Fromme [1]
[1] University of Applied Sciences Bielefeld, Department of Engineering Sciences and Mathematics, Bielefeld, Germany

Modern aluminum casement windows consist of an inner and outer profile made of aluminum, which are separated by an insulating bar made of polyamide (see Figure 1). Due to the low heat conductivity of the plastic material the thermal interaction between the living space and the surrounding is reduced significantly, but thermal expansion of the different materials could cause elastic or even ...

Simulation of a Plastic Bottles Solar Collector

V. Bonetti[1]
[1]Ingegneria Senza Frontiere, DESE, Università di Pisa, Pisa, Italy

In the Andean region of Southern Peru, poverty and climate are extreme: at 4000mt asl, insolation is among the highest in the world but the temperature varies more than 30 degrees between day and night. At the community of Livitaca (Cuzco), the association “Ingegneria Senza Frontiere” is working on a project of bioclimatic architecture. In this context, it is devised a low cost drainback solar ...

An Integrated Numerical-Experimental Approach for Heat Transfer Analysis of Industrial Furnaces

G. Petrone[1], A. Adorisio[2], S. Adorisio[2], M. Calderisi[3], A. Cecchi[3], M. Scionti[1], F. Turchi[3]
[1]BE CAE & Test, Catania, Italy
[2]Gadda Industrie, Ivrea, Italy
[3]Laboratori Archa, Pisa, Italy

This paper deals with an integrated numerical and experimental analysis work aiming at the investigation of the thermal distribution inside an industrial furnace built for metal materials treatments. The main goal of the research is to find the geometrical and/or functional parameters responsible for a not homogeneous thermal distribution inside the internal volume of the furnace. During the ...

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 ...

Heat Propagation Improvement in YBCO-Coated Conductors for Superconducting Fault Current Limiters - new

D. M. Djokic[1], L. Antognazza[1], M. Abplanalp[2], M. Decroux[1]
[1]DPMC, University of Geneva, Geneva, Switzerland
[2]ABB Corporate Research Centre, Dättwil, Switzerland

YBCO Coated Conductors (CCs), used for applications in Resistive Superconducting Fault Current Limiters (RSFCLs), are known to have insufficiently high Normal Zone Propagation Velocity (NZPV) during quench events. The improvement can be made by enhancing the thermal conductivity of YBCO-CCs with no decrease in the electrical resistivity. We studied the advantage of multilayered structures grown ...

Computational Modeling of the Impact of Solar Irradiance on Chemical Degradation of Painted Wall Hangings in a Historical Interior - new

Z. Huijbregts[1], A. van Schijndel[1], H. Schellen[1], K. Keune[2], M. Eikema Hommes[3,4]
[1]Eindhoven University of Technology, Eindhoven, The Netherlands
[2]University of Amsterdam, Amsterdam, The Netherlands
[3]Cultural Heritage Agency, Amsterdam, The Netherlands
[4]Delft University of Technology, Delft, The Netherlands

The historic Hofkeshuis in Almelo (The Netherlands) locates a unique work of art: three walls in the rear salon of the private house are covered with an 18th century series of painted wall hangings (Figure 1). The simple and similar pigmentation of the paintings, their original hanging, and the few cleaning interventions make it possible to use the degree of the formation of lead soaps, so ...

Heat Conduction in Porous Absorption Layers for Thermography Applications - new

L. Helmich[1], A. Huetten[1]
[1]Bielefeld University, Bielefeld, Germany

Thermography measurements on metallic thin films are challenging due to reflections from the environment. We present a thin "gold black" absorption layer to deal with this issue. A multiphysics model is introduced to correct the experimentally obtained data for undesirable heat transfer effects between the metallic sample and the absoption layer.

Predicting Degradation of a Composite Material Due to an Injected Current

J. Rivenc [1],
[1] Airbus Group Innovations, Toulouse Cedex, France

The purpose of this study is to predict, with a multiphysics model, the degradation area of a composite material when a current is injected into the material. The main physical phenomenon is an exothermic reaction, with an irreversible nonlinear variation of the electrical conductivity. The strategy is presented, in order to perform a computation that correctly takes the physics into account. In ...

Model of a Pulsed Radiofrequency Technique for Pain Relief

E. Ewertowska [1], M. Trujillo [2], E. Berjano [1],
[1] Department of Electronic Engineering, Universitat Politècnica de València, Valencia, Spain
[2] Instituto Universitario de Matemática Pura y Aplicada, Universitat Politècnica de València, Valencia, Spain

Radiofrequency ablation is one of the common methods used to treat pain, movement or mood disorders. It bases on the electromagnetic energy provided to the selected tissue when an alternating current is applied. The resistive heating produced in this process provokes temperature rise in target tissue and generates lesion for intended therapeutic effects. However, in case when no tissue damage is ...