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.

Finite Element Model of Surface Acoustic Wave Scattering with High-Aspect-Ratio Irregularities

S. Iuliia [1], Y. Sergey [1], K. Sergey [1], P. Alexey [1],
[1] Saratov State University, Saratov, Russia

The design of surface acoustic wave (SAW) devices needs the accurate study of the scattering fields, arising from the interaction of SAW with periodic irregularities placed on a surface of crystal to form interdigital transducers or reflective structures (RS). To solve this problem, the finite element methods are very perspective, because they allow to take into account the actual geometry of ...

Visualisation of the Internal Processes of a Fuel Cell with the Help of an Application Built with the COMSOL Multiphysics® Software

A. George [1], L. Fromme [1]
[1] University of Applied Sciences Bielefeld, Department of Engineering Sciences and Mathematics, Bielefeld, Germany

The objective was to make a visualisation application for the pupil's lab of the University of Applied Sciences Bielefeld. The application serves as a supplement for a workshop. It should provide a better understanding of a fuel cell, to visualize important influences and collect first experience with a simulation. To achieve this objective, a model of the fuel cell is created. The ...

A Virtual Laboratory for the 4 Bed Molecular Sieve of the Carbon Dioxide Removal Assembly

R. Coker [1], J. Knox [1], B. O'Connor [1],
[1] Marshall Space Flight Center - NASA, Huntsville, AL, USA

Introduction: Ongoing work to improve water and carbon dioxide separation systems to be used on crewed space vehicles combines sub-scale systems testing and multi-physics simulations. Thus, as part of NASA’s Advanced Exploration Systems (AES) program and the Life Support Systems Project (LSSP), fully predictive COMSOL Multiphysics® software models of the Four Bed Molecular Sieve (4BMS) of the ...

Effect of Proximity on the Thermal Rating of a Single Power Cable in Ventilated Tunnels

F. Boukrouche [1], C. Moreau [1], S. Harmand [2], J. Pelle [2], F. Beaubert [2], W. Frelin [1], O. Moreau [3]
[1] EDF R&D, Paris, France
[2] University of Valenciennes, Valenciennes, France
[3] EDF CIST, Paris, France

Power transmission through power cables installed in ventilated tunnels has been increasingly used worldwide and offers a complex thermal environment. These cables are placed on supports or fixed close to the tunnel walls. Established correlations currently in use have been deduced from a non-fully developed turbulent flow and the effect of the proximity to a tunnel wall is not accounted for ...

Electromagnetic(EM) and Thermal Characterization of a Microwave Oven in COMSOL Multiphysics® Software

S. Fujii [1], E. Suzuki [2],
[1] National Institute of Technology, Okinawa College, Nago, Okinawa, Japan
[2] Tokyo Institute of Technology, Meguro, Tokyo, Japan

Chemical reactions performed under microwave irradiation often have high reaction rates and high selectivities, which enable reactor sizes to be compact and processes to be energy-conserving. A microwave oven is widely used for microwave chemical processing and chemical synthesis. The COMSOL Multiphysics® software was used to obtain the the distribution of the electromagnetic (EM) field in the ...

Time Domain Reflectometry of a Water Tree inside an Underground Cable

K. Burkes [1],
[1] Savannah River National Laboratory, Jackson, SC, USA

This poster presents the electric field flowing through an insulated cable due to a high frequency voltage pulse in the presence of water trees.

Magnetically-Induced Displacement Force on Medical Devices in the Magnetic Resonance Environment

A. Ferreira [1], J. Ochoa [2], R. Siskey [2],
[1] Drexel University, Philadelphia, PA, USA
[2] Exponent Failure Analysis Associates, Philadelphia, PA, USA

Introduction: Medical devices undergo a series of evaluations in order to determine their performance and level of safety in a magnetic resonance (MR) environment. The standard of focus for this work is ASTM F2052-15 which measures the induced displacement of a device due to the spatial gradient fields present in the MRI scanner bore [1]. This test entails suspending the device from a string ...

Finite Element Analysis of Contact Studies of Radio Frequency MEMs Switch Membranes

J. Liu [1], V. B. Chalivendra [1], C. Goldsmith [1], W. Huang [1]
[1] University of Massachusetts - Dartmouth, Dartmouth, MA, USA

Radio frequency (RF) micro-electro mechanical system (MEMS) switch works in on/off modes controlled by electrostatic forces. In off mode, rough surfaces of electrodes come into a contact. Membrane contact surfaces have complex surface roughness patterns and the mechanical contact problem is very challenging to understand. The capability to predict contact quality becomes extremely important to ...

Design and Simulation of a MEMS Directional Acoustic Sensor

S. L. Pinjare [1], V. S. Nagaraja [1], K. S. Rudresh [1],
[1] Department of ECE , Nitte Meenakshi Institute of technology, Bangalore, Karnataka, India

A Piezoelectric Directional Microphone is demonstrated based on a bio-mimetic design inspired by the parasitoid fly Ormia ochracea using the PiezoMUMPs multi-user foundry. The device simulation was conducted using COMSOL Multiphysics® software which achieves a directional sound field response and frequency band of 3.5 KHz to 4.5KHz. The sensitivity of the device is 3.8nV/pa.

Design and Simulation of Electroactive Polymer-Based Artificial Muscles for Biomedical Application

A. S. Tripathi [1], B. P. Chatterjee [2], S. Das [3],
[1] Advanced Technology Development Centre, Indian Institute of Technology Kharagpur, Kharagpur, India
[2] Dept. of Cardiology, Medical College and Hospital, Kolkata, India
[3] School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India

Electro-active polymer (EAP) based actuators are one of the suitable contenders for use in artificial muscles based bio-medical application because of their bio compatibility and lower active actuation voltage requirement phenomenon. At present Ionic polymer metal composites (IPMC), a type of EAP based actuator are being developed for various applications. IPMC actuator generally consist ...

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