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.

Compressional Waves Generation in Droplets of Water Deposited on a Quartz Crystal

G. Couturier, R. Boisgard, C. Jai, and J.P. Aimé
Université Bordeaux

In this paper, we investigate the compressional wave generation in droplets and use different techniques to correlate the compressional wave generation to the shape of the droplets. Results show a good correlation between eigenmodes predicted by the theory and those experimentally observed.

Passive and Active Deformation Processes of 3D Fibre-Reinforced Caricatures of Cardiovascular Tissues

A. Di Carlo[1], P. Nardinocchi[2], T. Svaton[3], and L. Teresi[1]

[1]Modelling and Simulation Lab, Università Roma Tre, Roma, Italy
[2]Dept. of Structural & Geotechnical Engineering, Università di Roma La Sapienza, Roma, Italy
[3]Dept. of Mathematics, University of West Bohemia, Pilsen, Czech Republic

In this paper, we present a mathematical model of contractile elastic solids meant to simulate various districts of the cardiovascular system, and based on the concepts of active deformation and embedded muscle fibres. Specifically, here we deal with the modeling of the gross mechanics of the Left Ventricle (LV) which is strictly related to its pump function. As is well known, the effectiveness ...

Experimental and Theoretical Studies on Air Exchange in Portable Devices

M. Olin [1], L. Laakso [1], J. Hannula [2], T. Galkin [2], K. Väkeväinen [2], and K. Hartikainen [3]
[1] University of Helsinki, Finland
[2] Nokia Corporation, Finland
[3] Ambertec Oy, Finland

In this paper, we perform a leakage analysis fitted to approximate analytical diffusion and air exchange models, by the helium injection method for one mobile phone type. In order to extend the applicability of our models, we developed a more complicated numerical model for diffusion, thermal conduction and free convection inside the phone.

Modeling Heat Barrier Efficiency of Flame Retarded Materials

S. Bourbigot, M. Jimenez, and S. Duquesne
Laboratoire Procédés d’Elaboration des Revêtements Fonctionnels, Ecole Nationale Supérieure de Chimie de Lille, Lille

In this paper, different approaches for modeling heat transfer in materials are examined: Heat anisotropy in styreneacrylonitrile copolymer provided by the nanodispersion and the orientation of single wall carbon nanotubes Heat protection of aluminum plate using nonwoven material made with high performance fibers Fire protection using intumescent paint on steel plate. It is shown that ...

Modeling the Coupled Mass Transfer Phenomena During Osmotic Dehydration of Fresh and Frozen Mango Tissues

J. Floury[1], Q.T. Pham[2], and A. Le Bail[3]
[1] UMR STLO–INRA–Agrocampus
[2] School of Chemical Engineering and Industrial Chemistry, UNSW
Sydney, Australia.
[3] UMR CNRS GEPEA–ENITIAA, Nantes

In this paper, we present a mathematical model for simulating the mass transfer, during the osmotic dehydration of mango cubes. The mass balance equation for the transport of each constituent is established separately for intracellular and extracellular volumes but accounts for the mass exchange across the cell membrane and the shrinkage of whole tissue.

Designing an Array of Nanocalorimeters for Screening Biochemical Interactions

F. Torres
Palo Alto Research Center

In this presentation we present our analysis of the PARC Nanocalorimeter. Calorimetry is basically the measuring of heat of chemical reactions or physical changes. Nanocalorimetry is Calorimetry at the Nanometer scale. The PARC Nanocalorimeter is a special type of Calorimeter, it consists of arrays of Nanocalorimeters. The PARC Nanocalorimeter is intended to be used for screening biochemical ...

Numerical Methods used in Biomedical Technology

Klaus Liefeith
Institut für Bioprozess- und Analysemesstechnik e.V.
Heiligenstadt

Breakthroughs in biomedicine and IT have provided a wealth (mountain) of data where the key post-genomic challenge is to transform this data into information that can be used to determine biomaterial function. Biomaterial functions arise from complex nonlinear interactions between biological processes occurring over multiple spatial and temporal scales Gaining an understanding of these ...

Numerical simulation of separation flows with FEMLAB 3.1

Carlo Gualtieri
University of Napoli Federico II
Naples, Italy

Flow separation is a common and interesting phenomenon in fluid mechanics with significant effects in practical applications. Thus, it has been the focus of intensive study for many years. The objective of this presentation is to investigate laminar separation flows over a backward-facing step and over a rectangular trench using COMSOL. --------------------------------- Carlo Gualtieri ...

The pianistic touch: FEMLAB modeling of a grand piano action

Riccardo Ferrari
University of Trieste
Trieste, Italy

In this presentation we will show how to partially model a grand piano action. Then we will apply different touches to this virtual action and try to hear any difference. --------------------------------- Riccardo Ferrari was one of the keynote speakers at the COMSOL User's Conference, fall 2005 in Milano

Numerical Simulation of Diffusion-Ventilation Model for Gas Mitigation in Goaf

Yang Tianhong
Professor
College of Chemistry and Molecular Sciences
Wuhan University
Wuhan, China

This presentation is written in Chinese. --------------------------------- Keynote speaker's biography: Yang Tianhong received his M Sc. from the China Coal Research Institute in 1998 and his Ph.D from Northeastern University, China in 2001. After a stint as a Visiting Professor at the Hong Kong University, Yang Tianhong is presently a Visiting Professor at the University of Western Australia.

Quick Search

2681 - 2690 of 3230 First | < Previous | Next > | Last