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.

Modeling the Effect of Discrete Distributions of Platinum Particles in the PEM Fuel Cell Catalyst Layer

C.F. Cetinbas[1], A.K. Prasad[2], S.G. Advani[1]
[1]Center for Fuel Cell Research, Department of Mechanical Engineering, University of Delaware, Newark, DE, USA
[2]University of Delaware, Newark, DE, USA

In this study, the basic catalyst layer (CL) structure, consisting of carbon-supported Pt particles (C|Pt) and an ionomer binder, is investigated numerically by using COMSOL. The significance of modeling discrete Pt particles on the carbon support is highlighted by comparing the cell performance results to the case in which the Pt is assumed to be distributed uniformly over the carbon support as ...

Nanoscale Structure Design in EM Fields Using COMSOL Multiphysics

J. Yoo[1], H. Soh[2], J. Choi[3], S. Song[4]
[1]Department of Mechanical Engineering, Yonsei University, Korea
[2]Hyundai Motor Co., Korea
[3]Samsung Electronics Co., Ltd., Korea
[4]Mando Co., Korea

Nanoscale structural analysis and design is presented. All the simulations are carried out using a finite element solver and optimization is performed using parameter and topology optimization schemes. It is concluded that COMSOL is effective for analysis and design of nanoscale structure design in electromagnetic field and it may be combined with several optimization methods to improve system ...

Simulating Thermotherapeutic Response Induced by Thermal Padding for Treating Acute Injuries

J. Kantor[1], Y. Feng[1], C. Acosta[1], E. Massingill[1]
[1]University of Texas at San Antonio, San Antonio, TX, USA

Cryotherapy and thermotherapy are common methods of treatment for acute injuries ranging from ankle sprains to complex surgery. The idea behind such treatment is that a change in temperature will reduce pain and constrict fluctuations in blood flow at the targeted area. The purpose of this study is to simulate the vascularized tissue reaction and the resulting blood flow fluctuation from thermal ...

Why We Have Earthquakes in the Eastern United States

J. K. Costain[1]
[1]Virginia Tech, Blacksburg, VA, USA

There are only two types of naturally-occurring earthquakes anywhere on the Earth: 1) those associated with the dynamics of plate tectonics and 2) those associated with the dynamics of the hydrologic cycle. The first type is characteristic of an INTERplate setting (like the San Andreas Fault). The second (“hydroseismicity”) is characteristic of an INTRAplate setting (like the Virginia ...

Numerical Modeling of a Microtubular Solid Oxide Fuel Cell Using COMSOL Multiphysics®

P. Pianko-Oprych[1], E. Kasilova[1], Z. Jaworski[1]
[1]West Pomeranian University of Technology, Faculty of Chemical Technology and Engineering, Szczecin, Poland

Micro-tubular Solid Oxide Fuel Cells (mSOFC) are attracting more and more interest as new generation of energy conversion devices. Although commercial applications still suffer from high costs, there is a need for further improvement of the cell performance, durability and start-up. To resolve those challenges, knowledge of the distributions of species concentration, temperature and current ...

Modeling Partially Absorbing Biosensors

D. Kappe[1], A. Hütten[1]
[1]Bielefeld University, Bielefeld, Germany

Designing and constructing a lab-on-a-chip device poses a variety of questions. Transport of all required substances, detection of the analyte and its deposition on a sensor have to be incorporated. Different strategies have been developed to achieve good coverages of the sensor, like employing electric or magnetic gradients. On the basis of a ramp like structure, the binding of the analyte to a ...

Modeling of Coupled Mass and Heat Transfer and Expansion During Baking of Bread in a Mould

V. Nicolas[1], C. Doursat[2], D. Grenier[1], T. Lucas[1], D. Flick[2]
[1]Institut de recherche en sciences et technologies pour l'environnement et l'agriculture, Rennes, France
[2]AgroParisTech, UMR1145 Ingénierie Procédés Aliments, Massy, France

Bread is a food product which various complex physico-chemical phenomena occur during the cooking process. Thus, phenomena of heat and mass transfer are coupled to the deformation. In addition, bread is a multiphase product (solid, liquid and vapor) and composed of various components (dry matter, water, air and carbon dioxide). A 2D model is developed with COMSOL Multiphysics® 4.3b witch ...

Particle Focusing Optimization and Stress Analysis of a Magnetic Horn

S. di Luise[1], A. Rubbia[2]
[1]Swiss Federal Institute of Technology, ETH, Zurich, Switzerland and CERN European Organization for Nuclear Research, Geneva, Switzerland
[2]Swiss Federal Institute of Technology, ETH, Zurich, Switzerland

A neutrino oscillation experiment aims to the observation of the transformation of a neutrino of a given flavour into a neutrino of a different flavour. A beam of neutrinos is produced through the decay of charged pions which in turn are produced in the collision of high energy accelerated protons impinging on a thick target. A series of magnetic horns is used to focus charged particles produced ...

Vibration Analysis of the Wineglass for Glass Harp using COMSOL Multiphysics®

Teruyuki KOZUKA[1]

[1]National Institute of Advanced Industrial Science and Technology, Tokyo, Japan

When a wineglass is touched with a wet finger along its edge, it vibrates at single frequency and you hear a clear sound. If the water is added into the glass, the sound pitch changes because the resonance frequency changes with the mass of the glass. When there are plural glasses with different quantity of the water, it becomes the musical instrument called the glass harp. Although the glass ...

Numerical Model for Leaching and Transporting Behavior of Radiocesium in MSW Landfill

Hiroyuki ISHIMORI et al.[1]

[1]Ritsumeikan University, Kyoto, Kyoto, Japan

This paper presents the numerical simulation model for radiocesium leaching and transporting behavior in municipal solid waste (MSW) landfill and discusses on the design for the required geometry and properties of the impermeable final cover and the soil sorption layer, which work for containment of hazardous waste such as radiocesium-contaminated MSW generated by Fukushima Daiichi nuclear ...

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