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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.

Numerical Simulation for Dimensioning a Rock Heating Experiment

P. Ralek, and M. Hokr
Technical University of Liberec
Liberec, Czech Republic

The paper deals with simulation of rock heating experiment in underground, testing the rock properties for geothermal application. The modeled process is unsteady heat conduction in 3D. We made several parametric studies to find the possible temperature range with uncertainty in some of the parameters - in particular an interval around the laboratory measured heat conductivity and capacity and ...

Time Domain Analysis of Eddy Currents in Saturating Magnetic Materials

S. Thompson
Applied Research Laboratory
Penn State University
State College, PA

Eddy current phenomena in conducting magnetic media are well understood, although the detailed behavior at high drive levels leading to magnetic saturation are not always well explained. This paper considers the example of an infinite cylindrical magnetic core with an external coil. At high frequencies the interaction of the induced flux and current in the core confine them both to a thin ...

Simulation Studies on Stress Generation and Volume Expansion due to Electrochemical Lithium Insertion in a Silicon Nanowire

G. Sikha, and J. Gordon
Applied Materials, Inc.
Santa Clara, CA

Silicon electrodes are presently being pursued as the potential negative electrode for lithium-ion batteries owing to its high gravimetric (mAh/g) and volumetric capacity (mAh/L) compared to the existing state of the art graphite electrode. Recent experimental studies have demonstrated the use of nano size Si electrodes which minimizes insertion induced stresses due to facile strain ...

Modeling an electric cell actuator and loudspeaker using COMSOL Multiphysics

W. J. Wu
NTU Nano-Bio MEMS Group
National Taiwan University,
Taiwan

This presentation presented the following: * The building of an FEA model of an electric cell actuator using COMSOL Multiphysics * Validation of this model through the AVID and ESPI measurement systems * The building of an FEA model of an electric loudspeaker using COMSOL Multiphysics * Validation of this model throughan acoustic measurement systems This paper is in Chinese.

Numerical Simulation of Recovery of Light Oil by Medium Temperature Oxidation in Porous Media

N. Khoshenvis Gargar[1], A. Mailybaev[2], D. Marchesin[2], H. Bruining[1]
[1]Delft University of Technology, Delft, The Netherlands
[2]Instituto Nacional de Matematica Pura e Aplicada, Rio de Janeiro, Brazil

One of the methods to recover oil from medium and low viscosity in complex reservoirs uses air injection leading to oil combustion. In this case the oxygen in the air burns the heavier components of the oil, generating a heat wave leading to vaporization of lighter components. In this work, we consider a simple model for air injection in light oil reservoir containing only one component in dry ...

Web Based Laboratories for Teaching Electromagnetics for TEMPUS eLab Project

Y. El-Qattan [1], H. Ghali[1]
[1]Electrical Engineering Department, The British University in Egypt (BUE), El Sherouk City, Egypt

This paper presents a successful step towards the development of a “web-based laboratory” for teaching basic, and even advanced, electromagnetic concepts. The main idea is to develop a reusable model for the student to be used exactly as a hardware experiment in a physical laboratory, where he/she can change some of the experiment\'s physical parameters and get corresponding results. The two ...

Parametric Study of Electrolyte-Supported Planar Button Solid Oxide Fuel Cell

A. Aman[1], R. Gentile[1], Y. Xu[1], N. Orlovskaya[1]
[1]Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, FL, USA

Fuel cells are devices that convert chemical energy of a fuel into electrical energy through electrochemical processes. One of the types of fuel cell is the Solid Oxide Fuel Cell (SOFC) that uses solid ceramics for electrolytes. Numerical simulation involves constructing a mathematical model of the SOFC and use of specifically designed software programs that allows the user to manipulate the ...

Modeling Large-Scale Mine Dewatering by Using Subsurface Flow Module in COMSOL Multiphysics

J. Molinero[1], A. Nardi[1], P. Trinchero[1]
[1]Amphos 21, Barcelona, Spain

Groundwater is a key factor affecting mine operations worldwide. On one hand, both underground and open pit mines need to pump out groundwater in order to proceed with mineral extraction and increase the stability of rock slopes. On the other hand, groundwater abstractions can produce undesired environmental and social impacts, which should be anticipated in the environmental impact assessments ...

Analysis of Electroosmotic Flow of Power-law Fluids in a Microchannel(1D)

K. SriNithin[1]
[1]IIT Kharagpur, Kharagpur, West Bengal, India

Electroosmotic flow of power-law fluids in a slit channel(1D) is analyzed. The governing equations are the Poisson–Boltzmann equation, the Cauchy momentum equation, Generalized Smoluchowski equation and the continuity equation are used to get shear stress, dynamic viscosity, and velocity distribution. Simulations are performed to examine the effects of ?H, flow behavior index, double layer ...

Improvements on Liquid Cyclotron Target Loading/Unloading System Using COMSOL Multiphysics®

F. Alrumayan[1], A. Alghaith[1], J. Schneider, [1], M. Ahmed [1], M. Al-Qahtani[1]
[1]King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia

A 3D model was developed using COMSOL Multiphysics® to study the flow dynamics of the water inside the geometry of the [13N] Ammonia target for medical application . The image attached shows a 3D model of the target. A significant improvement was noted after modifying the geometry as suggested by the model and delivery time of radioactive solution was dramatically reduced. Water and aluminum ...

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