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 Contact Line Dynamics in Evaporating Menisci

J. Plawsky[1], A. Chatterjee[1], and P.C. Wayner Jr.[1]
[1]Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York, USA

The Constrained Vapor Bubble is a fundamental fluid mechanics experiment that is scheduled to run aboard the International Space Station starting in August 2009. The experiment is focused on looking at evaporation and condensation processes at the contact line, where vapor, liquid and solid meet. Our goal is to understand how processes that occur on the macroscale affect the transport processes ...

Computational Building Physics using COMSOL Multiphysics

A.W.M. van Schijndel
Technische Universiteit Eindhoven

This paper presents a first modeling guide for the modeling and simulation of Heat, Air & Moisture (HAM) transport of building constructions using COMSOL with Matlab. The aim of the paper is to provide a relative easy access to HAM modeling and simulation for people who have only minor experience with Matlab and COMSOL. --------------------------------- Keynote speaker's ...

3D Dynamic Simulation of a Metal Hydride-Based Hydrogen  Storage Tank

A. Freni, and F. Cipiti
CNR- Institute for Advanced Energy Technologies “Nicola Giordano”, Messina, Italy

In this paper, a 3D dynamic simulation for a portion of a metal hydride-based (LaNi5) hydrogen storage tank is presented. The model is based on heat and mass balances and considers coupled heat and mass transfer resistance through a non-uniform pressure and temperature sorbent bed. The governing equations were implemented and solved using the COMSOL Multiphysics software package. The simulation ...

Penetration of Moisture in a Solar Panel Edge Seal

P.K. Mercure[1]
[1]The Dow Chemical Company, Midland, MI, USA

Photovoltaic systems can degrade with moisture. The addition of an edge-seal containing a desiccant can reduce the amount of water reaching the interior. This report discusses the modeling of the water transport into the system to determine the amount of edge seal and desiccant required. The moving freezing front of the Stefan heat-transport problem is used to model a moving moisture front. ...

Modelling of the Wool Textile Finishing Processes

M. Giansetti[1], A. Pezzin[1], S. Sicardi[1], G. Rovero[1]
[1]Politecnico di Torino, Torino, Italy

Within wool textile industries, a very important role is played by the so-called finishing processes, in which the textile substrate undergoes steam treatments to achieve the desired level of stabilisation and appearance. Process parameters, namely temperature and moisture content, are known only at the beginning of the process but not in the textile material being treated, where the actual ...

3D Hydrogeological Modeling - From a Theoretical 2D Model through a Medium Scale Application up to a Challenge: Simulations at Basin Scale

E. Cavalli[1], R. Simonetti[1], M. Gorla[1], N. Ceresa[1]
[1]CAP Holding, Milan, Italy

An alluvial aquifer system has probably conceived as a numerical modeling hell. We have chosen COMSOL Multiphysics® for two reasons: 1) FEM methods allow to use complex geometries; 2) multiphysics simulation permits to run a single model with all phenomena. We built a section with these physics: a) Darcy's law, b) Richards' equation, c) ALE to show surface deformation, d) Hydrogeologcal ...

A FEM Analysis of Transport Phenomena occurring during Vegetable Drying

S. Curcio
University of Calabria

The aim of the present work is the formulation of a theoretical model describing the transport phenomena involved in a food drying process by a convective oven. The proposed model represents a general and predictive tool capable of describing the real oven’s behavior over a wide range of process and fluid-dynamic conditions. The resulting system of non-linear unsteady-state partial ...

Non-Isothermal Kinetics of Water Adsorption in Compact Adsorbent Layers on a Metal Support

G. Füldner, and L. Schnabel
Fraunhofer Institute of Solar Energy Systems, Freiburg, Germany

Water adsorption in highly porous materials can be used in heat transformation processes for the efficient use of energy in heat and cold production. One technology for such a thermal heat transformation is the use of water adsorption in highly porous adsorbents like zeolite. To optimize the power density of compact thin layer adsorbent beds, a one-dimensional model of the coupled heat and mass ...

Simulation of roll coating process using FEMLAB

Manski, S.S.1, Mmbaga, J.P.1, Hayes, R.E.1, Bertrand, F.H.2, Tanguy, P.A.2
1 Department of Chemical and Materials Engineering, University of Alberta, Edmonton AB Canada
2 URPEI, Department of Chemical Engineering, Ecole Polytechnique, Montreal, Quebec, Canada

Paper coating operations involve a number of coupled multiphase interactions. The use of FEMLAB to study these coupled phenomena using a level set method is reported. Several problems, including the penetration of fluid into a porous media, flow split meniscus dynamics and entrapment of air bubbles during coating process are explored using a level set implementation. Fluid penetration from a ...

Simulations of Scanning Electrochemical Microscopy Experiments in Pure Negative and Positive Feedback Mode with Ring Microelectrodes

J. Mauzeroll[1], M. Mayoral[1], and D. Fabre[1]
[1]Department of Chemistry, Université du Québec à Montréal, Montreal, Quebec, Canada

Scanning electrochemical microscopy (SECM) is a powerful tool recently developed for studying structures and processes in micrometer and submicrometer sized systems. It can probe electron, ion, and molecule transfers, and other reactions at solid-liquid, and liquid-liquid, interfaces . This versatility allows for the investigation of a wide variety of processes, from metal corrosion to metabolism ...

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