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.

Integrated Solar Thermal Collector with Heat Storage

A.R. Sánchez-Guitard[1], E. Ruiz-Reina[1]
[1]University of Málaga, Málaga, Spain

In this work, we study the design of a new integrated system for Solar Water Heating that combines the solar thermal energy collection (primary circuit) with the heat storage (secondary circuit) into the same device. We have performed different finite element method simulations using COMSOL Multiphysics®, for solving the equations of heat transfer (conduction and convection) and those of fluid ...

Blood Flow Patterns in a Patient Specific Right Coronary Artery with Multiple Stenoses - new

B. Liu[1]
[1]Department of Mathematics, Monmouth University, West Long Branch, NJ, USA

Atherosclerotic lesions preferentially develop in certain regions like bifurcations, branches, and bends [1, 2]. A possible explanation for such a preferential localization of atherosclerosis is that the geometry of the vessel influences the blood flow pattern. It suggests that the arterial geometry plays an important role in determining the localized blood flow information. Thus hemodynamic ...

Direct Modeling of Packed Bed Channeling - new

R. Schunk[1], J. Knox[1], R. F. Coker[1]
[1]NASA Marshall Space Flight Center, Huntsville, AL, USA

An analysis to quantify the effects of packed bed channeling in the narrow passages of the ISS (International Space Station) CDRA (Carbon Dioxide Removal Assembly) is presented. The CDRA contains two pelletized adsorbent beds to remove CO2 respired by the crew. Each CO2 adsorbent bed is paired with an upstream desiccant bed to condition the inlet air (i.e. remove water vapor) prior to entry ...

Can we use Aquifers to Monitor Magma Chambers? Using COMSOL Multiphysics® to Investigate Subsurface Strain Changes and Their Effect on Hydrological Systems - new

K. Strehlow[1], J. Gottsmann[1], A. Rust[1]
[1]University of Bristol, Bristol, UK

Groundwater-bearing geological layers respond to and modify the surface expressions of magmatic activity, and they can also become agents of volcanic unrest themselves. Interpretations of unrest signals as groundwater responses to changes in the magmatic system can be found for many volcanoes and include a wide range of phenomena and suggested processes to explain them (e.g., Newhall et al., ...

Multiscale Simulation of a Photocatalytic Reactor for Water Treatment - new

A. Cockx[1], R. Degrave[1], P. Schmitz[1]
[1]University of Toulouse, Toulouse, France

This study deals with the 3D modeling of a light photocatalytic textile. This process aims to decontaminate industrial effluents such as water with pesticides. The present study describes the implementation of a reactive transport model in a computational fluid dynamics model developed on a Representative Volume Element (RVE) of the textile, i.e. at the microscopic scale. The final ...

Evolution of the Geochemical Background of an HLW Cell in the Callovo-Oxfordian Formation - new

O. Silva[1], M. Pekala[1], D. Garcia[1], J. Molinero[1], A. Nardi[1], M. Grive[1], B. Cochepin[2]
[1]Amphos 21 Consulting, Barcelona, Spain
[2]Agence Nationale pour la Gestion des Dechéts Radioactifs, Châtenay-Malabry Cedex, France

The French National Waste Management Agency (Andra) envisages the safe disposal of High-Level Waste Intermediate-Level Long-Lived Waste through deep geological storage (multibarrier). Waste storage is based on the Callovo-Oxfordian formation (CallOx). It has been updated a reactive transport model accounting for the chemical and thermal evolution of a HLW cell. Improvements are a better ...

Micromachined Silicon Integrating Cavities for Far-Infrared Bolometer Arrays - new

M. Audley[1], G. de Lange[1], G. Keizer[1], C. Bracken[2]
[1]SRON Netherlands Institute for Space Research, Groningen, The Netherlands
[2]National University of Ireland, Maynooth, Co. Kildare, Ireland

We are investigating gold-plated micromachined silicon integrating cavities for arrays of far infrared Transition Edge Sensor bolometers. We present the results of our simulations and show how we used COMSOL Multiphysics® software to optimize the geometry of the integrating cavity. We show that we can achieve a high optical efficiency over a wide frequency range.

Mathematical Model of Vacuum Foam Drying - new

M. Sramek[1], J. Weiss[2], R. Kohlus[1]
[1]Department of Food Processing Engineering, Institute of Food Science and Biotechnology, Hohenheim University, Stuttgart, Germany
[2]Department of Meat Science and Food Physics, Institute of Food Science and Biotechnology, Hohenheim University, Stuttgart, Germany

The mathematical model is closely related to the development of a novel drying method for high viscous and sticky materials. The foamed state facilitates diffusive moisture transport and therefore accelerating the drying process. Moreover the dried porous material can be easily converted into the powder. The mathematical modelling aimed at evaluating the complex drying process as basic ...

Modeling and Simulation of High Sensitivity CMOS Pressure Sensor Using Free Boundary Circular Diaphragm Embedded on Ring Channel Shaped MOSFET

S. Joy[1], T. Tom[1]
[1]Rajagiri School of Engineering and Technology, Kochi, Kerala, India

Sensors have diverse applications ranging from medical field to space explorations. They convert physical parameters such as temperature, pressure, humidity etc: - into an electrical output. The discovery of piezoresistivity property of silicon and germanium led to miniaturization of pressure sensors. Improvement in the sensitivity is the major factor to be considered while designing pressure ...

Multiphysics Analysis and Optimization of Mechatronic Device Applications for Switching Devices

O. Cracium[1]
[1]ABB, Ladenburg, Germany

Medium- and high-voltage circuit breakers and reclosers are important grid protection devices that connect different grid sources and increase the network/grid reliability. Currently, there is a clear need of increasing the numbers of switching operation. Therefore, the optimal design of these devices becomes of extreme importance in order to enable the required switching capabilities. This ...

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