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.

Numerical Study and Simulation in COMSOL Multiphysics of the Dilution Process during Dust Sampling in Dry Machining

B. Wenga-Ntcheping[1], A. Djebara[1], R. Kamguem[1], J. Kouam[1], V. Songmene[1]
[1]University of Quebec-École de Technologie Supérieure, Montreal, Canada

Dilution’s issue during dry machining have raised the interest’s environmental researchers and engineers. In fact, the sampling of dust emitted during dry machining was a serious problem for air quality evaluation at the workplace. Furthermore, the best sampling of fine and ultrafine particles produced during material cutting, passed through the dilution of high particle concentration (number, ...

Evaporation Induced Convection Under a Gas Channel

H. Machrafi[1], A. Rednikov[2], P. Colinet[2], P.C. Dauby[1]
[1]University of Liège, Thermodynamics of Irreversible Phenomena, Institut de Physique, Liège, Belgium
[2]Universite Libre de Bruxelles, TIPs - Fluid Physics, Bruxelles, Belgium

This work falls into the framework of an ESA experiment, which consists of observing the behavior of patterns and structures that can be formed after instability onset in a HFE7100 liquid layer, evaporating into a nitrogen gas flow. This study is performed by a three-dimensional numerical simulation of the transient temperature and fluid motion. The results show that first several small rolls ...

Computational Modeling of the Electrohydrodynamics Influencing Trace Mercury Adsorption within Electric Utility Electrostatic Precipitators

H. Clack[1]
[1]University of Michigan, Ann Arbor, MI, USA

Anthropogenic mercury (Hg) emissions increase the risk of neurological and neonatal health effects in humans through fish consumption. There are several technological approaches to controlling mercury emissions from coal combustion, including the injection of a powdered mercury sorbent into the flue gas upstream of the particulate control device (PCD). As most PCDs are electrostatic ...

Investigating the Performance of Mechanically Ventilated Double-Skin Facades with Solar Control Devices in the Main Cavity - new

C. G. Galante[1]
[1]Newtecnic Ltd, London, England, UK

The use of ventilated facades may reduce the cooling and heating energy demands of the building. Double-skin facades (DSFs) belong to the wider group of ventilated facades and currently represent one of the most interesting and studied facade systems. The purpose of this study is to investigate the thermal behaviour and performance of a DSF being designed for a real project in the Middle East ...

Simulation of a Nozzle in a Borehole

E. Holzbecher [1], F. Sun [2],
[1] German University of Technology in Oman, Muscat, Oman, Germany
[2] Georg-August-Universität, Göttingen, Germany

In boreholes nozzles have to be found advantageous to increase the infiltration rate of water into the subsurface ground. Studies and practice in the field shows that the infiltration of water into permeable aquifers can be improved, if the flow in the borehole is modified. Due to the nozzle the flow regime turns from linear to turbulent. CFD studies help to understand the physics of the ...

3D Modeling of Hydrogen Absorption in Metal Hydride Hydrogen Storage Bottles

R. Busqué [1], R. Torres [1], A. Husar [2], J. Grau [1]
[1] Escola Universitària d'Enginyeria Tècnica Industrial de Barcelona, Barcelona, Spain
[2] Institut de Robòtica i Informàtica Industrial CSIC-UPC, Barcelona, Spain

The storage of hydrogen as an absorbed element in metal hydride bottles is a promising technique for energy storage. In this work, a three-dimensional model of a charging process in a metal hydride container has been developed to simulate the absorption reaction and resultant heat and mass transport phenomena in metal hydride vessels. The model has been experimentally validated showing a good ...

Studying PEM Fuel Cells using Equation Based Simulation

J. Blackburn [1], N. McCartney [1],
[1] National Physical Laboratory, London, UK

We present computer simulation results for PEM fuel cells using COMSOL Multiphysics® software. We have developed novel PDE equations at NPL from first principles and these are more realistic than models typically used in literature. The theory includes Maxwell-Stephan and Nernst-Planck equations for the diffusion and electrochemistry as well as equations governing electrostatic and stress/strain ...

Modeling the Acoustic Scattering from Objects Buried in Porous Sediment Using COMSOL Multiphysics® Software

A. Bonomo [1], M. Isakson [1],
[1] Applied Research Laboratories, The University of Texas at Austin, Austin, TX, USA

A frequency-domain finite element (FE) technique for computing the acoustic scattering from axially symmetric fluid-loaded structures subject to a nonsymmetric forcing field based on Ref. 1 is extended to poroelastic media and implemented in COMSOL Multiphysics® software. This method allows for the scattering body to consist of any number of acoustic, elastic, and poroelastic domains. The ...

Numerical Modeling and Verification of Acoustic Streaming Induced by Ultrasonic Treatment

D. Rubinetti [1], D. A. Weiss [1], J. Müller [2], A. Wahlen [2],
[1] Institute of Thermal and Fluid Engineering, University of Applied Sciences Northwestern Switzerland, Windisch, Switzerland
[2] Institute of Product and Production Engineering, University of Applied Sciences Northwestern Switzerland, Windisch, Switzerland

Acoustic Streaming, Attenuation, Pressure Acoustics, CFD, Time-Averaged Variables

Numerical Simulation of Kinetic Interface Sensitive Tracer in Experiment with COMSOL Multiphysics® Software

F. Sun [1], A. Tatomir [1], F. Maier [2], M. Sauter [1]
[1] University of Goettingen, Goettingen, Lower Saxony, Germany
[2] Comsol Multiphysics GmbH, Goettingen, Lower Saxony, Germany

The kinetic interface-sensitive tracers (KIS tracers) are used to give a partial picture of the spreading, mixing and plume migration of supercritical carbon dioxide (scCO2) in the deep saline aquifer by estimating the interfacial areas between scCO2 and brine during the injection of scCO2. To get a better understanding of the KIS tracer reaction and transport processes in the two-phase flow ...