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.

COMSOL Multiphysics Modeling of Rotational Resonant MEMS Sensors with Electrothermal Drive

S. Nelson[1], and M. Guvench[1]
[1]University of Southern Maine, Gorham, Maine, USA

COMSOL Multiphysics is employed to model, simulate and predict the performance of a high Q, in-plane rotational resonating MEMS sensor. The resonating sensor disk is driven by thermal expansion and contraction of the support tethers due to AC joule heating. The resonant frequency is sensed by stationary contacts. For cost reduction, the relatively simple, low cost SOIMUMPS fabrication process is ...

Deep Desulfurization of Diesel Using a Single-Phase Micro-Reactor

G. Jovonavic[1], J. Jones[1], and A. Yokochi[1]
[1]School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon, USA

This paper describes the benefits of computational fluid dynamics in the development of a microreactor used in the desulfurization of aromatic compounds. It is crucial to verify diffusion and extinction coefficients to ensure accurate simulation results prior to experiments. COMSOL Multiphysics was used to model the behavior of all of the possible species present and reactions that may occur.

Optimal Electrical Design of Spherical Photovoltaic Cells

A.M. Morega, J.C. Ordonez, P.A. Negoias, M. Morega, and R. Hovsapian

This paper reports the optimization results of the new generation of honeycomb spherical photovoltaic cells (SPVC) with respect to the series electrical resistance. The electrical potential (voltage) distribution is found by numerically integrating the mathematical model of the DC current distribution within the SPVC. --------------------------------- Keynote speaker's ...

A Tool for Studying the Ecology of Hydrosystems

D. Peyrard[1], Ph. Vervier[1], S. Sauvage[1], J.M. Sánchez-Pérez[1], and M. Quintard[2]
[1] Laboratoire d’Ecologie des Hydrosystèmes, Toulouse
[2] Institut de Mécanique des Fluides de Toulouse

The hyporheic zone is defined as an area where water and matter exchange through the sand, gravel, sediments and other permeable soils under and beside streams. Its impact on the hydro-system function is determined by the proportion of subsurface biogeochemical reactions and the fluxes of water exchanging with the hyporheic zone and flowing through the porous sediments. The objective of our ...

Modeling Electrochemical Systems with Multiphysics

R.E. White
University of South Carolina

In this presentation we introduce the concept of Electrochemical Engineering through simulations in COMSOL Multiphysics. Our special case studies are: • a Parallel Plate Electrochemical Reactor, • a Rotating Ring Disk System, • a 3D Lithium Ion Battery, • a Portable Power System, • a Corroding Surface. These examples are all industrial ones, which shows the power of using ...

Modeling of Next Generation Energy Systems by Using COMSOL: Fuel Cell, High Power Lithium Ion Battery, and Dye-Sensitized Solar Cell

Jake Kim
Samsung SDI CAE Team

In this presentation we present methods for modeling alternative energy sources such as Fuel Cells and Solar Cells. The presentation also considers aspects of the modern world and what impact the high consuming of energy sources will have on tomorrow's society. This presentation is written in Korean. --------------------------------- Keynote speaker's biography: Jake Kim received ...

An Efficient Approach to Identifying a Complete Photonic Band Gap in Two-dimensional Photonic Crystals with Omnidirectional Light Propagation

Ming-Chieh Lin
Assistant Professor
NanoScience Simulation Laboratory
Department of Physics
Fu Jen Catholic University
Taipei, Taiwan

Omnidirectional light propagation in two-dimensional (2D) photonic crystals (PCs) is investigated. An efficient approach to identifying a complete photonic band gap (PBG) in 2D PCs has been developed. The in-plane band structure of 2D photonic crystals is calculated by an adaptive finite element method, as implemented in FEMLAB. Adopting the suitable boundary conditions, the eigenvalues can be ...

Numerical Model of a Very Light Jet Cavity

F. Teuma Tsafack, T. Kletschkowski, and D. Sachau
Helmut-Schmidt-University / University of the Federal Armed Forces, Hamburg, Germany

To prepare for the installation of a combined audio-ANC-system for a very light jet (VLJ), a finite element model of the investigated cavity was developed.Both an eigenvalue analysis and a time harmonic analysis were performed. The latter was needed to determine the transfer functions between error sensors and actuators.The simulations were performed using COMSOL Multiphysics. The results of the ...

Simplified 2D and 3D Models of Coating Formation: Application to Plasma Sprayed Zirconia

K. Fataoui1, B. Pateyron1, M. El Ganaoui1, M. Amara1, H. Rhanim2, and A. Belafhal2
1Université de Limoges, Limoges, France
2Faculté des Sciences, Université Chouaib Doukkali, El Jadida, Marocco

Since the nineties many works have been dedicated to splat formation modeling. The main part of these works takes into account the molten droplet impact onto a flat surface, its flattening and solidification.The aim of this work is to test if a simplified model in 2D allows to characterize the real contact between the splat and the substrate and to compare the results of the experiments and the ...

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