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.

Accelerating R&D with COMSOL: A Personal Account

Erik Birgersson[1]

[1]Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore

This presentation gives an account of how COMSOL Multiphysics® software has helped to accelerate research and development. It has been used to simulate energy systems such as fuel cells, biomedical systems such as hydrogels and human skin, and monolithic catalytic converters. Each of these systems requires a mathematical model that can accurately represent the relevant physics, and which can be ...

Early Breast Cancer Detection using Patient Symptomatic Breast Images by Finite Element Analysis Aided by COMSOL

Tan Ming Sien[1]
Devendran Perumal[1]
Sri Pooveyninthran[1]
Samavedham Lakshminarayanan[2]
Balu Ranganathan[3]

[1]Department of Chemical and Natural Resources Engineering, University of Malaysia Pahang, Pahang, Malaysia
[2]Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
[3]Center for Excellence for Fluid Flow Research, University of Malaysia Pahang, Pahang, Malaysia

In this project, we attempted to determine the drug concentration in a breast cancer tumor after a drug has been delivered. We created a COMSOL Multiphysics® finite element model. We investigated the relationship between drug delivery efficiency and parameters such as diffusivity, deepness of the tumor, and the temporal and spatial placement of the transdermal patch that delivers the drug. We ...

Numerical Study of an LTD Stirling Engine with Porous Regenerator

N. Martaj[1], P. Rochelle[1][2], L. Grosu[1], R. Bennacer[3], and S. Savarese[4]
[1]Universitè de Paris, Paris, France
[2]Institut Jean Le Rond d'Alembert, Université Paris 6
[3]Laboratoire LEEVAM «Environnement, Energétique, Valorisation, Matériaux», Universitéde Cergy-Pontoise
[4]COMSOL France, 5 pl. R Schuman, 38000 Grenoble

The alternative engines of Stirling type, are engines running on "hot air", using both an external heat source and regeneration. They should be considered as an alternative for the effective conversion of renewable energy sources into work, with their theoretical yield equal to the theoretical Carnot limit. The output efficiency and the power of these engines are strongly related to the ...

Numerical Simulation of Heart Valve Motion and Fluid Structure Interaction

Tijerino Monge, T., Carmona Infante, V.
Costa Rica

This model studies a portion of the vascular system of a normal person, in particular the left ventricle and the mitral valve of the heart. The flowing blood applies pressure to the ventricle before, after and specially during the contraction process of the heart, thereby deforming the structure.

Carbon Foam Filled with Phase Change Materials for Passive Temperature Management

Espinoza Vallejos, P.A., Duston, C.
Technology Assessment and Transfer

FEMLAB was used to aid in the design of a novel temperature management system. The system under consideration is a heat sink consisting of a carbon foam block brazed to the inside of an aluminum enclosure. The high thermal conductivity carbon foam is structurally reinforced and filled with a phase change material. A phase change material (PCM) is a substance which releases a large amount of ...

Thermal Stability of an HTS AC Armature Winding

Morega, A.M.1, Ordonez, J.C.2
1 Department of Electrical Engineering, POLITEHNICA University of Bucharest, Bucharest, Romania
2 Department of Mechanical Engineering and Center for Advanced Power Systems, Florida State University, Tallahassee, FL

The armature of a High Temperature Superconductor (HTS) motor is usually an AC copper air winding mounted in an iron-less stator. This unconventional winding is the siege of intense power dissipation by Joule and variable magnetic field effects, and has to be thoroughly designed to provide for the thermal stability of the HTS motor. For a more detailed knowledge of the thermal field beyond ...

Modelling of continuous steel coating by self-induced ion plating

Contino, A.1, Feldheim, V.1, Lybaert, P.1, Deweer, B,2, Cornil, H.2
1 Faculty of Engineering – Thermal Engng. & combustion Lab., Mons – Belgium
2 Arcelor Innovation, Liège, Belgium

The self-induced ion plating (SIIP) process is a new physical vapor deposition process based on the evaporation of a metallic target (i.e. tin) thanks to a magnetron sputtering system. The aim of this work is to develop a numerical simulation model of the SIIP process in order to predict the target temperature field and from it, the coating profile on the substrate. The simulation of the SIIP ...

A multiphysics approach of the styrene free radical polymerization modeling performed in different microreactors

Serra, C., Sary, N., Schlatter, G.
LIPHT-CNRS UMR 7165, ECPM-ULP Strasbourg

This paper investigates the modeling of styrene free radical polymerization in two different types of microreactor for which the wall temperature is kept constant. The simulations are performed with the help of FEMLAB 3.1 to solve simultaneously partial differential equations resulting from the hydrodynamics, thermal and mass transfer (convection, diffusion and chemical reaction). The ...

Aharonov-Bohm interferometry with quantum dots as phase shifters : simulations

Alberty, J.M.
EIHES, Ecole d’Ingénieurs de Genève

Electron interferometry using the Aharonov-Bohm (AB) effect finds many applications in industrial areas such as future nanocomputer technologies, physical random number generators, electron phase microscopy and holography, to name just a few. The presence of a confined magnetic field surrounded by the interferometer arms, as originally proposed by Aharonov and Bohm is however a source of ...

Quench Propagation in 1-D and 2-D Models of High Current Superconductors

G. Volpini[1]
[1]LASA Lab., Milan Dept., Istituto Nazionale di Fisica Nucleare, Milano, Italy

The understanding of quench, or the sudden transition to the normal state of a high-current Superconductor (SC), is fundamental for the design of a SC magnet, and it is widely discussed in the literature. This paper presents some simple COMSOL models, which are compared with well-known approximate formulae and some experimental results. These models allow a more precise description than it is ...

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