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.

Design of Capacitive Vibratory Energy Harvester Calculating Change in Capacitance in Fringe Electric Field and Structural Analysis of Spring

Tomokazu TAKASAKI[1]

[1]Kansai University, Suita, Osaka, Japan

The sensing without batteries can be realized by harvesting the unused energy in environment. The capacitive harvester can generate, since the capacitance between electrodes is changed by vibration. There are two methods of producing change in capacitance: 1) change in overlapped area between electrodes, 2) change in gap between electrodes. In this study, we calculated the change in capacitance ...

Paleohydrogeological Reactive Transport Model of the Olkiluoto Site (Finland) - new

M. Luna[1], P. Trinchero[1], J. Molinero[1], J. Löfman[2], P. Pitkanen[3], L. Koskinen[3]
[1]Amphos 21 Consulting, Barcelona, Spain
[2]VTT Energy, Espoo, Finland
[3]Posiva, Eurajoki, Finland

The safety assessment of the deep geological repository for nuclear waste of Olkiluoto (Finland) requires the evaluation of the influence of the land uplift (ice withdrawal) in groundwater. With this objective in mind, we have developed a three dimensional reactive transport model of the Olkiluoto, simulating the most relevant deformation zones in a three-dimensional domain. The evolution in ...

Modeling and Simulation of a Disposable Coriolis Flow-meter - new

S. Hooshmand Zadeh[1]
[1]GE-Healthcare, Uppsala, Sweden

The approach of this project is Modeling a Coriolis Mass Flow-meter (CMF) bases on a Fluid-Structure Interaction (FSI) device. The "Coriolis mass flow-meter sensor" is modeled using COMSOL Multiphisics® simulation, the Acoustic-Shell Interaction physics interface and coupled by FSI physics interface to drive and simulate the sensor. The modeling and simulation are provided into two different ...

Analysis to Determine Optimum Strain Gauge Locations for SENSEWHEEL - new

T. Suzuki[1], C. Holloway[1], S. Taylor[1]
[1]University College London, London, UK

Manual wheelchair users suffer shoulder pain and injury in the long term because of unconscious overuse. The ‘SENSEWHEEL’, which interposes three identical load cells between pushrim and rear wheel, measures the three components of pushing force Fx, Fy and Fz, and axial torque Tx applied at each load cell. Strain gauges were located on a diaphragm forming one face of the load cell. The ...

CFD/Electromagnetics Interactions via Realistic Heat and Mass Transfer to Moist Substrates - new

G. Ruocco[1], M. V. De Bonis[2]
[1]Engineering College, University of Basilicata, Potenza, Italy
[2]I​nstitute of Food Science and Production, National Research Council, Bari, I​taly

Localized convection heat and mass transfer can be intensified and optimized by providing exposure to electromagnetic energy. Conjugate heat and mass transfer are configured by solving the momentum, heat and mass transfer simultaneously in both solid (substrate, comprising of a two-phase chemical species) and fluid (auxiliary air) phases. In this way the heat and mass fluxes vary seamlessly ...

Simulations of Micropumps Based on Tilted Flexible Structures - new

M. J. Hancock[1], N. H. Elabbasi[1], M. C. Demirel[2]
[1]Veryst Engineering, LLC., Needham, MA, USA
[2]Pennsylvania State University, University Park, PA, USA

Pumping liquids at small scales is challenging because of the principle of reversibility: in a viscous regime, the flow streamlines through a fixed geometry are the same regardless of flow direction. Recently we developed a class of microfluidic pump designs based on tilted flexible structures that combines the concepts of cilia (flexible elastic elements) and rectifiers (e.g., Tesla pump). We ...

Estimativa do Fluxo de Calor em uma Ferramenta de Corte Durante um Processo de Usinagem com o Uso do Software COMSOL Multiphysics® e de Técnicas de Problemas Inversos - new

R. F. Brito[1], S. R. de Carvalho[2], S. M. M. de L. e Silva[1]
[1]Federal University of Itajubá - UNIFEI, Itabira, Minas Gerais, Brasil
[2]Federal University of Uberlândia - UFU, Uberlândia, Minas Gerais, Brasil

This work proposes the use of inverse problem techniques in connection with COMSOL to estimate the heat flux and the temperature field on a turning cutting tool in transient regime. The main purpose of the present work is to present the improvements performed in relation to the authors’ previous work to develop the complex geometry of a machining process. Specification function, which is an ...

Simulation of Acoustical Transfer Paths for Active Noise Control

L. Fromme [1], J. Waßmuth [1], D. Wehmeier [1],
[1] Bielefeld University of Applied Sciences, Bielefeld, Germany

The knowledge of the acoustical transfer paths in active noise control systems is very important for the performance of the system. Unfortunately, simulation is challenging since even simple configurations require comprehensive experience in physics and modeling. Two test setups were chosen for basic investigations on modeling, simulation and validation. The first results presented here are ...

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 ...

Finite Element Evaluation of the Strength of Silicide-Based Thermoelectric Modules

A. Miozzo [1], S. Boldrini [1], A. Ferrario [1], M. Fabrizio [1],
[1] Institute of Condensed Matter Chemistry and Techologies for Energy - National Research Council of Italy, Padova, Italy

Silicide-based thermoelectric modules (TEMs) for power generation operate at mid-high temperature range. In the operating conditions, thermal stresses in materials with different coefficient of thermal expansion may reduce the mechanical strength of the modules. In this work, a finite element evaluation of the mechanical strength of a 16 legs thermoelectric module prototype operating with 300 K ...