Technical Papers and Presentations

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.

Benchmarking as Key Element of Confidence Building in Safety Assessments for Radioactive Waste Disposal

E. Weetjens
SCK-CEN (the Belgian Nuclear Research Centre), Mol, Belgium

Verification of the codes applied for assessment of the long-term repository safety is typically one of the quality assurance requirements demanded by regulatory bodies, in the disposal of radioactive waste. In this paper, an internationally organized benchmark exercise is presented, in which the comparison was carried out for a selection of key radionuclides. The examples presented in this paper ...

Mass Transfer From a Rotating Cylinder in a Confined Gas Flow

N. Jand[1], A. Scarpetta[2], and M. Stefano[2]
[1]Chemical Engineering Department, University of L’Aquila, L’Aquila, Italy
[2]Faculty of Engineering, University of L'Aquila, L’Aquila, Italy

The modeling of sublimation form a rotating cylinder of solid naphthalene in a confined vessel has been performed by coupling the model of incompressible Newtonian fluid flow with the model of the dilute solutions. Preliminary a 2D axisymmetric system with swirl flow function for laminar and turbulent regimes has been considered. In the turbulent regime the RANS model with default parameter is ...

Chemical Reactions in a Microfluidic T-Sensor: Numerical Comparison of 2D and 3D Models

R. Winz[1][2], N. Schröder[1], W. Wiechert[1], and E. von Lieres[1]
[1]Institute of Biotechnology 2, Research Centre Jülich, Jülich, Germany
[2]Research Center for Micro and Nanochemistry, University of Siegen, Siegen, Germany

In recent years lab-on-microchip technology has become a powerful tool for micro-scale analysis of biochemical processes. In the studied system the overall process consists of transport, convection, diffusion, reaction and adsorption processes. Two compounds A and B, contained in a carrier fluid (buffer), are introduced into a reaction channel via a Y-shaped double-inlet. As the streams flow ...

On the Drying Dynamics in Biofilters

F. Schönfeld
Hochschule RheinMain
University of Applied Sciences
Wiesbaden, Germany

The performance of biofilters relies on the presence of a sufficient amount of water in the biofilter material. And breakdown of filtration performance is often caused by inappropriate water content. The present study focuses on the drying dynamics within such filter, which are modelled as wetted porous media. Analyzing gas flow and water content we find that such systems exhibit instable ...

Two Dimensional Model of a Catalytic Plate Reactor for Methane Steam Reforming Using Different Kinetic Mechanisms

M.A. Mundhwa[1], C.P. Thurgood[1], and B.A. Peppley[2]
[1]Royal Military College of Canada, Kingston, ON, Canada
[2]Queen's University, Kingston, ON, Canada

Coupling of an endothermic reaction and an exothermic reaction using catalytic plate reactor (CPR) is a well known concept for industrial processes such as steam reforming, dehydrogenation and hydrocarbon cracking. In the CPR, the exothermic reaction (e.g., combustion of methane) can provide the necessary heat to drive the endothermic reaction (e.g., steam reforming of methane). The present work ...

Two Dimension Model of Solid Oxide Fuel Cell Using COMSOL

K. Song, and H. Knickle
University of Rhode Island, Kingston, RI, USA

As a promising candidate for future electricity providing, solid oxide fuel cell (SOFC) exhibit high efficiency, quiet operation and near zero emissions. In this work, two 2-dimension models of SOFC are constructed in COMSOL. Model 1 includes porous anode and cathode simulations with a thin electrolyte. The fuel cell is operated isothermally under fixed output voltages of 0.4, 0.6 and 0.8. The ...

Electrochemical Modeling of Passive Film Formation on Steel in Simulated Concrete Pore Solutions

H.M. Bernardes[1], M. Mancio[2], and P.J.M. Monteiro[2]
[1]São Paulo State University, Ilha Solteira, SP, Brazil
[2]University of California, Berkeley, CA, USA

In this work, a tridimensional model of the electrochemical reactions taking place on the alloy/solution interface has been developed in the COMSOL Multiphysics environment. The model accounts for solution chemistry, cell potential, and solves the related mass, momentum and energy balances. The simulation is based mainly on the experimental results obtained by Mancio et al, which have employed ...

Modeling of Dehydration of Mushroom Using Finite Element Method

C. Anandharamakrishnan[1], A. Choudhary[2], and R. Gopirajah [1]
[1]Human Resource Development,CSIR-Central Food Technological Research Institute, Mysore, India
[2]Manipal Institute of Technology, Manipal, Karnataka, India

Dehydration is one of the methods that would extend the shelf life of mushrooms. Dried mushrooms can be used in many different types of products. Furthermore, elevated temperatures during drying enhance enzymatic reactions that can result in improved flavor of dehydrated mushrooms. This study aims to model the dehydration of mushroom using finite element modeling (FEM) taking into account of ...

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