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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Simulation of the Mechanical Stability of Inkjet-Printed Hierarchical Microsieves

S.F. Jahn[1,3], S. Ebert[2], M. Hackert[1], W.A. Goedel[2], R.R. Baumann[3], and A. Schubert[1,4]
[1]Chemnitz University of Technology, Chair Micromanufacturing Technology, Germany
[2]Chemnitz University of Technology, Physical Chemistry, Germany
[3]Chemnitz University of Technology, Professorship for Digital Printing and Imaging, Germany
[4]Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany

Porous membranes with pore sizes in the micrometer scale are required in many micro systems dedicated to biological and chemical applications. If their thickness is in the same dimension like the pore diameter they are called microsieves. On the one hand, a thin membrane guarantees a small flow resistance but on the other hand the mechanical strength is reduced. We developed a process which ...

Equation-Based Modeling: The Structural Contact Problem Solved by The Velocity Approach

O. Toscanelli, and V. Colla
Scuola Superiore S. Anna, Pisa, Italy

The contact between infinitely rigid body and deformable part is studied using the velocity as a dependent variable. A simple forging case is evaluated. The velocity approach is realized by means of using COMSOL with the Equation-Based Modeling. The contact model evaluated in this work is suitable to model the forging process. For a given mesh and element it is possible to choose the optimum ...

The Dissolution and Transport of Radionuclides From Used Nuclear Fuel in an Underground Repository

Y. Beauregard[1], M. Gobian[2], and F. Garisto[2]
[1]University of Western Ontario, London, ON, Canada
[2]Nuclear Waste Management Organization, Toronto, ON, Canada

In the Canadian concept for a deep geological repository for used nuclear fuel, the used fuel bundles are placed in containers consisting of an inner steel vessel surrounded by a copper shell. The filled containers are placed in excavated tunnels or boreholes and surrounded by a compacted bentonite clay buffer material. In the event of container failure, the rate of migration of radionuclides ...

Numerical Model For Rocking Of Mono-Pile In A Porous Seabed

D-S. Jeng, X. Luo, and J. Zhang
Division of Civil Engineering, University of Dundee, Dundee, Scotland, UK

Offshore wind and wave energy industries have developed considerably in the last two decades. Most offshore energy structures used in the existing projects are mono-piles in shallow water due to simplicity of installations, design and control. Numerous research for the design and modeling of offshore wind energy system have been carried out in the past. However, most previous studies have been ...

Optimization of Design Parameters of a Novel MEMS Strain Sensor used for Structural Health Monitoring of Highway Bridges

H. Saboonchi, and D. Ozevin
Civil Engineering Department
University of Illinois at Chicago
Chicago, IL

The novel Micro Electro Mechanical System (MEMS) based Piezoresistive stain sensor is presented in this paper. The main goal of this sensor is to monitor the localized strain in the highway bridges especially near the crack tips. Monitoring the crack growth on the bridges can lead to early detection and prevention of bridge failures. The COMSOL Multiphysics software was used to optimize the ...

Coupled Electromagnetic - Dynamic FEM Simulation of A High Frequency MEMS Energy Harvester

E. Topal
Middle East Technical University
Ankara
Turkey

In this study, a detailed finite element model coupling the motion dynamics and electromagnetics of a diaphragm based MEMS vibration energy harvester is presented. The energy harvester converts low frequency vibrations to high frequency response by magnetic actuation of a diaphragm carrying coils. AC/DC, Solid Mechanics and Moving Mesh (ALE) modules are coupled together in one 3-D model to ...

Numerical Analysis of the 3-omega-method

M. Feuchter, and M. Kamlah
Karlsruhe Institute of Technology (KIT)
Institute for Applied Materials
Karlsruhe, Germany

Determining the thermal conductivity of condensed matter attracted much attention in past years. While several techniques exist to measure the thermal conductivity of solids or thin films, the 3-omega-method is one of the most well-established due to its high accuracy. First, COMSOL Multiphysics is used for numerical analysis to perform various parametric studies. To study the flow of heat, ...

Microfluidic Systems for Cell Growth and Cell Migration Studies

M.Dimaki[1], P. Shah[1], D. Kwasny[1], J. Lange Moresco[2], and W. E. Svendsen[1]
[1]Department of Micro- and Nanotechnology, Technical University of Denmark, Lyngby, Denmark
[2]Sunstone Capital, Copenhagen, Denmark

Lab-on-a-chip devices for cell culturing are becoming imperative in order to satisfy the needs for point-of-care or decentralized laboratory testing. Towards that goal we have developed miniaturized membrane based cell culture chambers for use within the field of chromosome analysis. The same principle was applied for the development of a miniaturized cell migration device. Flow and ...

Multiphysics Modeling and Simulation of MEMS Based Thermal Bimorph Sensor Array for Automated Solar Energy Storage Applications

K. Umapathi, V. K. Kanna, R. Gowthami, M. Alagappan, and A. Gupta
PSG College of Technology
Coimbatore
Tamil Nadu, India

Two bimorph array facing opposite to each other are designed and attached with metal micro plates. The micro solar cell (or) film can be placed on the top of each plate for storing the energy. With respect to the direction of sun light, one bimorph array receives more energy in the form of heat than the other and deflects accordingly. The deflection of the bimorph array depends on the material ...

Simulation of Quench Propagation in a Double-Helix Superconducting Magnet with COMSOL Multiphysics

P. Masson
Advanced Magnet Lab
Palm Bay, FL

The paper presents the numerical analysis of quench propagation in a DH magnet wound with a commercially available MgB2 wire in a fiber-glass composite matrix and operating at 20 K. The quench is induced by a small heater located on the first layer of the magnet close to the peak field area. The quench dynamics, peak temperature along with detection requirements are derived from the simulation ...