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.

Heat and Moisture Modeling Benchmarks using COMSOL

A. van Schijndel
Eindhoven University of Technology, Eindhoven, Netherlands

Benchmarks are an important tool to verify computational models. In the research area of building physics, the so-called HAMSTAD (Heat, Air and Moisture Standardization) project is a very well known benchmark for the testing of simulation tools. In this paper we evaluate the use of COMSOL with its multiphysics capabilities regarding this benchmark. In comparing the results with the benchmark, it ...

Transport of Cadmium through Molten Salt to Argon Cover Gas in Electrorefiner

K.Revathy[1], S. Agarwal[1], B. Muralidharan[1], G. Padmakumar[1], K. K. Rajan[1]
[1]Fast Reactor Technology Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, India

Electro refining is one of the important step in the Pyro processing nuclear spent fuel with molten salt. The electro refiner is a process vessel consists of anode ,cathodes and stirrers and ultra –high pure argon gas is provided at the top for inert atmosphere and at the bottom a cadmium layer is provided. The vapor pressure of the cadmium is high at the operating temperature, the cadmium vapor ...

Phase-field Modeling of Widmanstätten Ferrite Formation During Austenite to Ferrite Transformation in Fe-C Alloy - new

L. Zhang[1], Y. Shen[1]
[1]School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, China

The transformation of austenite (A) to ferrite (F) in steels, which is technologically important and of fundamental interest, still remains less well understood in some aspects. At intermediate undercooling F grows with a plate-like morphology (widmanstätten). Some calculations, which assume that the composition at A/F boundary is local-equilibrium or the morphology of F is rather simple, are ...

A Model Coupling Water Transport with Local Deformation and Polymer Phase Transition

A. Briffaz [1], J. M. Méot [2], P. Bohuon [3], C. Mestres [2], B. Matignon [2], M. Dornier [3]
[1] CIRAD, Montpellier, France
[2] CIRAD, Montpellier, France
[3] Montpellier SupAgro, Montpellier, France

Describing and predicting the extent of the physicochemical processes as well as geometrical deformation taking place during food transformation is of major importance to control food functional properties. Unfortunately, only a few food-matrix models consider deformation particularly because of large deformation. In the case of a starchy product such as rice, water transport and swelling ...

Sulfur Deactivation Effects on Catalytic Steam Reforming of Methane Produced by Biomass Gasification

P. Sadooghi[1], R. Rauch[1]
[1]Vienna University of Technology, Vienna, Austria

Sulfur, which is incorporated in the biomass structure, is released into the product gas during gasification as hydrogen sulfide. Hydrogen sulfide is known to deactivate nickel based steam reforming catalysts by chemisorption on the metal surface during steam reforming process. Desulfurization has a negative effect on the process efficiency therefore steam reforming has to be run without ...

Multiphysics Modelling of a Microwave Furnace for Efficient Solar Silicon Production

N. Rezaii [1], J. P. Mai [1],
[1] JPM Silicon GmbH, Braunschweig, Germany

The JPM Silicon GmbH presents a novel method for the production of solar grade silicon in the microwave oven. This method can specially reduce the energy costs and increase the efficiency of the process. A numerical model is developed which depicts the physical, chemical and electromagnetic phenomena of silicon production process. In order to increase the efficiency of the system, it is ...

A COMSOL Multiphysics® Software Interface with GEMS3K for Modeling Reactive Transport (Geo)Chemical Processes

O. B. Isgor [1], V. J. Azad [1],
[1] Oregon State University, Corvallis, OR, USA

This paper presents a generic interface for reactive transport process modeling that was developed between the COMSOL Multiphysics® software Java API (transport model) and GEMS3K (reaction model). While the transport of different species, kinetics of dissolution/precipitation, system potentials, fluid and gas flow, etc. can be modeled in a complex chemical system with COMSOL® software, the ...

Transient Model of a Fluorine Electrolysis Cell

J. Vukasin [1], I. Crassous [1], B. Morel [1], J. Sanchez-Marcano [2], P. Namy [3]
[1] HRP, AREVA NC, France
[2] Institut Européen des Membranes - CNRS, France
[3] Simtec, France

In the nuclear fuel cycle, fluorine is produced by the electrolysis of the molten salt KF-2HF. It is a complex process to study since hydrofluoric acid and fluorine are hazardous and highly corrosive. A 3D-model of a lab-scale fluorine electrolysis cell has been developed to increase our understanding of this process, using the electric currents and the bubbly flow interfaces to simulate the ...

Thermal-Optical Modeling of a Signal Enhancement Approach for Paper-Based Diagnostics

D. Gasperino [1]
[1] Intellectual Ventures Laboratory, Bellevue, WA, USA

INTRODUCTION: Point of care diagnostics aimed at low-resource settings need to be relatively simple, robust and low-cost. The most commonly-used diagnostic platform in these settings is the lateral flow assay (LFA). LFAs are paper-based immunoassays designed to perform on-strip binding with analytes in patient samples in order to generate a visual signal if disease-specific antigen is ...

Melt Homogenization Improvement By Optimizing the Rotation Profile

J. Petit [1], V. Tabouret [1], B. Viana [2],
[1] ONERA, Chatillon, France
[2] IRCP/CNRS, Paris, France

During the last decades, mid-IR (3-12µm) laser sources have attracted attention due to their potential applications in different fields like infrared counter-measures (e.g: missile jamming) and remote chemical sensing. In this context, Onera has been working on the development of non-oxid materials and still is developing new crystals that allow to reach higher power and to extend the ...