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.
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A Low Cost CMOS Compatible MEMS based Fingerprint Sensor Design

A. Ganesan[1], S. Swaminathan[1], N. N. Sharma[2]
[1]BITS, Pilani - Dubai, U.A.E.
[2]Mechanical Engineering Department, Birla Institute of Technology & Science, Pilani, Rajasthan, India

In this paper, a novel design of a fingerprint sensor composed of a 2D array of piezo resistive micro beams has been presented. When the user presses the sensor array with a finger, the ridges and valleys that compose the fingerprint induce corresponding deflections in the micro beams. These deflections can be detected by means of a resistivity change, which when used with appropriate signal ...

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 ...

Numerical Investigation of Swirl Flow in Curved Tube with Various Curvature Ratio

A. Kadyirov[1]
[1]Research Center for Power Engineering Problems of the Russian Academy of Sciences, Kazan, Russia

The influences of curvature effects and swirl intensities for Non-Newtonian viscous fluid flow in a curved tube have been numerically investigated by using COMSOL Multiphysics®. The twisted tape, which are located directly in front of the curved part, are used as swirl flow generators. The tape is twisted until it reaches an angle of 90 degrees and turns right. Swirling flow, getting into the ...

Modeling and Simulation of Dielectric Barrier Discharge Plasma Reactor for Nitrogen Fixation Reaction

B.S. Patil[1], Q. Wang[2], V. Hessel[2], J. Lang[3]
[1]Eindhoven University of Technology, Eindhoven, The Netherlands
[2]Micro Flow Chemistry and Process Technology, Eindhoven University of Technology, Eindhoven, The Netherlands
[3]Innovation Management, Verfahrenstechnik & Engineering, Evonik Industries AG, Hanau-Wolfgang, Germany

Fixed nitrogen is used in many forms ranging from nitric acid to hydrogen cyanide and is used as such for industrial applications. The reactions to produce these products are highly endothermic and favored by high-temperature processing. The most basic route of chemically fixing nitrogen is the direct reaction of nitrogen and oxygen. However, the major challenge is to supply very high ...

Heat-Accumulation Stoves: Numerical Simulations of Two Twisted Conduit Configurations

D. Rossi[1], P. Scotton[2], M. Barberi[3]
[1]Università degli Studi di Padova, Dipartimento di Geoscienze, Padova, PD, Italy
[2]Padova, Dipartimento di Geoscienze, Padova, PD, Italy
[3]Barberi Stufe LTD, Trento, TN, Italy

An important part of the society considers an increased share of renewable energies as an integral part of a strategy towards a sustainable future. As far as heat supply is concerned, this can be achieved using solar thermal collectors, borehole heat exchangers or trough the combustion of biomass. This article shows two applications of two configurations of twisted conduit inside the external ...

Chromatographic Separation of Tröger’s Base in a Batch Column

A. Fayolas [1], M.G. Sanku[1], M. Pascoa[1], M. Xynou[1]
[1]KTH Royal Institute of Technology, Stockholm, Sweden

The objective of the study is to investigate the chiral separation of Tröger’s base enantiomers using batch chromatography. Because of its resolution, chromatography is often the preferred method for chiral separations. The separation of Tröger’s base is resolved by using the COMSOL Multiphysics® software. It is modeled by one dimension geometry, having the length of the column set and computed ...

Smart Radiator Upgrade (Super Smart with Natural Gas)

E. Bozelie[1], P. Bruins[1]
[1]Saxion University Enschede, Enschede, The Netherlands

In heating upgrades, most attention is paid to the boiler. When upgrading to HR++-boilers (eff of 107%) however, difficulties may occur since the high efficiency boilers are designed for water temperatures around 40°C, while the old radiators are designed for water temperatures higher than 60°C. The resulting mismatch may lead to reduced performance, a larger carbon footprint and increased ...

Finite-Element Analysis of High Frequency Electromagnetic Fields

Masanori HASHIGUCHI et al.[1]

[1]Keisoku Engineering System Co., Ltd., Chiyoda City, Tokyo, Japan

Using COMSOL Multiphysics, numerical solution of electromagnetic field of microstrip open stub is obtained in frequency domain of 0.1GHz - 60GHz by using the COMSOL RF Module and the computed S11 is compared to experiment. It was found that the S11 predicted here is in good agreement with the experimental result reported in Ref.1.

Can we use Aquifers to Monitor Magma Chambers? Using COMSOL Multiphysics® to Investigate Subsurface Strain Changes and Their Effect on Hydrological Systems - new

K. Strehlow[1], J. Gottsmann[1], A. Rust[1]
[1]University of Bristol, Bristol, UK

Groundwater-bearing geological layers respond to and modify the surface expressions of magmatic activity, and they can also become agents of volcanic unrest themselves. Interpretations of unrest signals as groundwater responses to changes in the magmatic system can be found for many volcanoes and include a wide range of phenomena and suggested processes to explain them (e.g., Newhall et al., ...

Optimization and Simulation of MEMS Based Thermal Sensor for Performance of Transformer Oil

V. Vijayalakshmi[1], K. C. Devi[1]
[1]PSG College of Technology, Coimbatore, Tamil Nadu, India

In this work, a bimetallic strip based thermal sensor was designed using MEMS module of COMSOL Multiphysics® software to monitor the temperature rise in insulating oil which was used as coolant in transformers. The bimetallic strip was designed with different shapes such as cylindrical, rectangle, square & conical and different compositions such as Al/Steel Alloy and Fe/Cu which can withstand ...