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.

Investigation of the Effect of Spinal Defects on Spondylolysis and Stress Fracture of Vertebral Bodies

M.S. Yeoman[1], C. Quah[2], A. Cizinauskas[1], K. Cooper[1], D. McNally[5], B. Boszczyk[2]
[1]Continuum Blue, Tredomen, Ystrad Mynach, United Kingdom
[2]The Centre for Spinal Studies and Surgery, Queen’s Medical Centre, Nottingham, United Kingdom
[5]Bioengineering Research Group, Faculty of Engineering, The University of Nottingham, Nottingham, United Kingdom

Spondylolysis (SL) is a defect of the spinal vertebra, and is typically caused by stress fracture of the pars interarticularis bone of the vertebral arch. It is especially common in adolescents who over train in sporting activities. Spina bifida occulta (SBO) is a malformation of the spine where the protruding vertebral bodies are not fully formed. In this study we demonstrate the predisposition ...

Numerical Modeling of Power Reactors' Fuel Bundles

R. Schmidt[1], T. Yousefi[2], B. Farahbaksh[2], M. Z. Saghir[2]
[1]University of Louisiana at Lafayette, Lafayette, LA, USA
[2]Ryerson University, Toronto, ON, Canada

Fuel bundles in the CANDU (CANada Deuterium Uranium) reactor are designed for heating a pressurized coolant (heavy water) to generate electricity. The designs for the fuel bundles differ based on the number of heating elements. The flow of heavy water over the elements and inside the shell is highly turbulent. In this paper, COMSOL Multiphysics® is used to simulate the heavy water flow ...

Structural Mechanics for Real Geometry of Basalt Woven Composites

J. Salacova[1]
[1]Technical university of Liberec, Department of Material Engineering, Liberec, Czech Republic

Woven composites with basalt reinforcement plain 1x1 are examined to define structural mechanics. Woven composites were created by the prepreg technology, 8 layers of plain-weave basalt fabrics were saturated by the precursor, polysiloxane matrix Lukosil®, and joint pressed during temperatures of 200°C and 600°C. The yarns consist of 8000 fibres assembled without twisting. Voids complete entire ...

Studying the Sensitivity of the Wrinkling Process to Mesh Imperfections Using COMSOL Multiphysics® and LiveLink™ for MATLAB®

S. K. Saha[1], M. L. Culpepper[1]
[1]Massachusetts Institute of Technology, Cambridge, MA, USA

Wrinkles are formed on a thin film as a result of buckling-based instabilities. This can be used as an inexpensive fabrication technique for generating micro and nano scale periodic patterns. Finite element techniques are used for the predictive design of complex wrinkling patterns. As wrinkles are formed via a bifurcation process, the accuracy of these models is dependent on the initial ...

Simulation of Microfabricated Linear Ion Trap

J. Heinonen[1], M. Erdmanis[1], I. Tittonen[1]
[1]Aalto University, Department of Micro- and Nanosciences, Espoo, Finland

We present a simplified 3D model that simulates the operation of a linear microscale integrated ion trap. It employs a set of metalized electrodes, which are formed on top of an insulator layer on silicon substrate. The confinement in all three dimensions is provided by the application of the specific AC and DC voltages to the corresponding trap electrodes. The distribution of the trapping ...

Modeling the ELENA Electron Cooler with COMSOL Multiphysics® Software - new

G. Tranquille[1]
[1]CERN, Geneva, Switzerland

ELENA is a small cooler decelerator ring at CERN which will be built to increase substantially the number of usable antiprotons delivered to experiments for studies with antihydrogen and antiprotonic nuclei. COMSOL Multiphysics® software has been used to completely model the ELENA electron cooling device in 3D. We have taken advantage of the different physics-based modules of COMSOL ...

Modeling of Expanding Metal Foams - new

B. Chinè[1,2], M. Monno[3]
[1]Laboratorio MUSP, Macchine Utensili e Sistemi di Produzione, Piacenza, Italy
[2]School of Materials Science and Engineering, Costa Rica Institute of Technology, Cartago, Costa Rica
[3]Politecnico di Milano, Dipartimento di Meccanica, Milano, Italy

Metal foams are interesting materials with many potential applications. They are characterized by a cellular structure represented by a metal or metal alloy and gas voids inside (Fig.1). A common metallic cellular material is aluminum foam which can be produced metallurgically by heating a precursor, made of aluminum alloy and TiH2 as foaming agent, in a furnace. In this case, the foaming ...

Simulation of Helmholtz Resonators for Optical Gas Sensing: Comparison Between Pressure Acoustics and Thermoacoustics - new

B. Parvitte[1], C. Risser[1], R. Vallon[1], V. Zéninari[1]
[1]Université de Reims, Reims, France

Among optical gas sensing methods, photoacoustic (PA) spectroscopy combined with a laser source has proven to be a very robust and sensitive method for trace gas detection. COMSOL Multiphysics® software was used to calculate the frequency response of differential Helmholtz resonator cells in order to optimize the detection limit of PA sensors. Two different kind of simulation were performed: ...

Numerical Analysis of Mass Transfer Rate in Droplet Flow at Microscopic Scales - new

S. Cito[1], T. Sikanen[1]
[1]Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland

Droplet flow at microscopic scale is often used to enhance many pharmaceuticals and industrial processes (i.e. liquid–liquid micro-extraction, nanoparticle synthesis, slow reactions in microfluidic devices, etc.). In all these processes, the mass transfer rate, at the interface between the droplets and the surrounding fluid of diluted reactants plays a key role. This work at analyzing ...

3D COMSOL Multiphysics® Model of a Plate Heat Exchanger to Support a Laboratory Teaching Environment - new

N. Medeiros[1], W. Clark[1]
[1]Worcester Polytechnic Institute, Worcester, MA, USA

Chemical engineering students and practitioners need an understanding of fluid flow and heat transfer inside heat exchangers. Because the flow within plate heat exchangers is difficult to visualize, we developed COMSOL Multiphysics® simulations of plate heat exchangers for students to study alongside a physical heat exchanger in a laboratory setting. Simulative experiments allow students to ...