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.

Gravity-Driven Film Flow: Design of Bottom Topography

C. Heining[1] and N. Aksel[1]

[1]Applied Mechanics and Fluid Dynamics, University of Bayreuth, Bayreuth, Germany

We study the gravity-driven film flow of a Newtonian liquid down an inclined plane. Many applications such as heat- and mass exchangers and evaporators or film coaters require undulated or rippled bottom topographies. In these cases, the interplay of gravity, surface tension and inertia leads to a response of the interface which furthermore strongly depends on the shape of the bottom topography. ...

COMSOL Multiphysics® Version 4

Svante Littmarck
President and CEO, COMSOL

Svante Littmarck is the CEO of the COMSOL group. He co-founded COMSOL in 1986. He holds a M.Sc. in Applied Mathematics from the Royal Institute of Technology in Stockholm. In 2004 he received an honorary doctoral degree from the Royal Institute of Technology.

Thermo-mechanical Behavior of Multilayers

Bilotsky, Y., Gasik, M.
Laboratory of Materials Processing and Powder Metallurgy, HUT, Finland

The model for study of thermal mechanical behavior of multilayer thin films was developed. The stress-strain analysis was carried out in combination with thermal effects. The 2D thinfilm model has been solved by FEMLAB 3.1i. The middle layer was thermally loaded with Ohmic heating and other layer’s thicknesses were varied in time. All material data like elastic coefficients, thermal ...

Modelling of the Heat Generation and Transfer in Self-reheating Tins

Deregnaucourt, F.,Boulenguez, J., Falières, J.M.1, Pietrzyk, S.2
1 Société CABAC Logistique, Captieux, France
2 Laboratoire de Catalyse de Lille/LGCA USTL-ENSCL-ECLille, Villeneuve d’Ascq, France

Self-reheating tins are composed of two parts; one of them contains a ready-to-eat preserved product, the other one, the components of an exothermic process which, once started, brings the edible product to the temperature at which it is usually eaten. Some existing data on the temperatures in the heating and heated parts during the process have been used to validate the results obtained by ...

Mould heating distribution control system simulation for polymerization of a composite spar for helicopter main rotor blade

Slusar, B.1, Flek, M.1, Rubtsov, Y.1, Shevtsov, S.2, Fomin, A.3
1 Rostov Helicopter Plant «Rostvertol», Rostov-on-Don, Russia
2 Southern Center of Russian Academy of Science, Rostov-on-Don, Russia
3 Don State Technical University, Rostov-on-Don, Russia

High cost and complexity of technological equipment for manufacturing in aeronautical engineering, necessity of fast reequipment for creation of new modifications of flight vehicles make the use of software for modeling prior to design activities very topical. Manufacturing of a polymeric composite spar of the helicopter main rotor blade is an example of technology, where it is necessary to ...

The influence of air humidity on the interaction between VOC and construction materials

Radulescu, C., Chicina, A.
LEPTAB

The subject of our study belongs to the large area of studies about the analyze and the prediction of indoor air quality. One of the actual weaknesses for the appreciations of air indoor quality is the lack off knowledge about the interactions between the pollutants and the materials (emission off VOC, adsorption). Knowing the behavior of construction materials we can figure out the possibility ...

Multiphysic FEMLAB modelisation to evaluate mid-infrared photonic detector performances

Cuminal, Y.1, Christol, P.2, Rodriguez, J.B2, Joullié, A.2
1 Laboratoire des Sciences des Matériaux et d’Automatique (LASMEA), Université Clermont II, UMR CNRS 6602, Aubiére, France
2 Centre d’Electronique et de Micro-optoélectronique de Montpellier (CEM2), Université de Montpellier-II, UMR CNRS 5507, Montpellier, France

Infrared photonic detectors operating in the mid infrared region find applications in pollution monitoring, high-speed infrared imaging systems and free space telecommunications. There is a need for new uncooled high performance detector systems and antimonide-based (Sb-based) semiconductor quantum structures could be an alternative of the well-established technologies. The main objective of ...

Inertia Mixer in CD Microfluidics

G. Kylberg

Gyros AB is developing biomedical laboratories in CD-discs, Gyrolab®. In a lot of applications mixers are needed and for some special applications liquid volumes of a few microlitres are to be handled. The mixing of a few microlitres liquids was studied numerically with FEMLAB and experimentally with colored and uncolored water. Thanks to this combination, the main mixing process was ...

A predictive model for the micro-porosity quantitative in Al-Si alloy

Battaglia, J.L., Rozot, J.M.
France

The fatigue is the most important criterion for the securities parts (brake system for example). The increasing use of shaped cast aluminium in the security automotive parts has focused interest on the fatigue of theses alloys. The specific foundry software use empirical laws that do not fit with the reality, above all concerning the aluminium alloys. We proposed a new physical parsimonious ...

FEMLAB analysis of open aluminium foam in compression

Nygaard, J.V.
Interdisciplinary Nanoscience Center (iNANO) Aarhus University, The Faculty of Science, Ny Munkegade, Aarhus C, Denmark.

The analysis of the mechanical properties of bi-continuous structures has been problematic due to the complex geometry that describes these materials. In this study a method which identifies and quantifies the geometrical elements within the structure will be presented. A sample is in-situ compressed and its deformation is compared with the results of a FEMLAB finite element model. Initially, ...

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