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.

A Flow and Transport Model for Low-Temperature Gaseous Nitrocarburizing of Stainless Steels

J. Feng [1], M. Wettlaufer [1],
[1] Centre of Materials Engineering, Heilbronn University, Heilbronn, Germany

An integrated numeric, thermodynamic, and experimental analysis work was conducted to find out the proper flow and transport parameters of combined chemical species for low-temperature gaseous nitrocarburizing of stainless steels in an industrial furnace built for thermochemical treatments. Such parameters are responsible for a steady thermochemical atmosphere essential for the anti-passivation ...

Kinetic Parameters for Gas Phase Photocatalysis: Analytic Versus CFD Approach - new

S. Denys[1], S. Verbruggen[1], S. Lenaerts[1]
[1]Sustainable Energy and Air Purification, Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium

Introduction Among the advanced oxidation processes (AOPs) for removal of volatile organic compounds (VOCs) from air, photocatalytic oxidation (PCO) is considered a very promising technology [1,2]. PCO can achieve mineralization of harmful VOCs to CO2 and H2O using only UV light [3]. A main challenge is to find appropriate kinetic models and parameters that accurately describe the rate of ...

Simulation of Reactive Transport in Porous Media: A Benchmark for a COMSOL-PHREEQC-Interface

D. Müller[1], H. Francke[1], G. Blöcher[1], H. Shao[2]
[1]Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum GFZ, Potsdam, Brandenburg, Germany
[2]Helmholtz-Zentrum für Umweltforschung UFZ, Leipzig, Saxony, Germany

The reactive transport simulation interface COMSOL-PHREEQC, developed by Wissmeier & Barry (2011), provides a MATLAB®-based coupling interface to combine COMSOL Multiphysics® for flow and heat transport simulations and PHREEQC as a geochemical batch reaction simulator. The functionality of the coupling tool is tested using the “calcite” example (Shao et al. 2010) as a benchmark. The results of ...

A Dynamic Simulation of Heterogeneous Catalysis with COMSOL Multiphysics® software

A. K. Patan [1], M. Mekala [1], S. K. Thamida [1],
[1] National Institute of Technology, Warangal, Telengana, India.

Reaction-Diffusion equation is simulated for heterogeneous catalytic reaction involving a porous catalyst particle surrounded by liquid reactants. COMSOL Multiphysics® software along with transport of dilute species module is used for this purpose. Global Variables such as reaction conversion are obtained through post-processing in COMSOL® software itself by evaluation of derived variables.

Reactive Transport and Convective Mixing During CO2 Migration in a Saline Aquifer

E. Abarca[1], A. Nardi[1], F. Grandia[1], J. Molinero[1]
[1]Amphos21 Consulting, Barcelona, Spain

The capture and storage of CO2 in deep geological formations is one of the proposed solutions to reduce CO2 emissions to the atmosphere. CO2 is injected as a supercritical fluid deep below a confining geological formation that prevents its return to the atmosphere. A configuration of denser CO2-enriched brine overlying lighter water leads to convective flow and the formation of gravity fingers ...

Modeling an Adsorption Process in a Shell-and-Tube-Heat-Exchanger-Type Adsorber - new

G. Salazar Duarte[1], B. Schürer[1], C. Voss[1], D. Bathen[2]
[1]Linde AG, Munich, Germany
[2]Universität Duisburg-Essen, Duisburg, Germany

Pressure Swing Adsorption (PSA) and Temperature Swing Adsorption (TSA) are commonly used for separation/purification of gas mixtures in industrial processes. The cycle time of industrial TSA processes usually ranges from several hours to days. The reason for this long cycle time is the usage of purge gas for heating and cooling the system (direct heating), which limits the application of TSA ...

CFD Simulation of Internal Flow Field of Dual-mode Scramjet - new

C. Butcher[1], K. Yu[1]
[1]University of Maryland, College Park, MD, USA

The complex internal flow field of a hypersonic air-breathing propulsion engine was modeled using COMSOL Multiphysics® software. This type of flow field can be found in a dual-mode scramjet engine. After creating the geometry, a 2D CFD simulation was run using the High Mach Number Flow physics interface in the CFD Module. A stationary time study was run and the results from the CFD simulation ...

Transport Phenomena in the Conversion of an Anaerobic Landfill into an Aerobic Landfill

H. Omar [1], S. Rohani [1],
[1] University of Western Ontario, London, ON, Canada

The world’s landfills are beginning to fill up due to the growing human population. Landfills require land and there will come a time when there will be no land to be used for landfills. A solution that is gaining attraction is the conversion of traditional “dry-tomb” landfills (used for storage) into bioreactor landfills. Dry-tomb landfills have many associated problems such as methane ...

Coupled Numerical Modeling and Thermodynamic Approach for SiC Growth Process

J. M. Dedulle [1], K. Ariyawong [1], D. Chaussende [2]
[1] Univ. Grenoble Alpes, Grenoble, France
[2] CNRS, Grenoble, France

Silicon carbide (SiC) single crystals are industrially produced by the physical vapor transport technique. Apart from the geometry of the growth setup, there are two main process parameters that can be controlled: temperature and pressure. To support the development of the process, numerical simulation has imposed as the only tool able to describe the process itself, providing a good evaluation ...

Virtual Modeling of Thermo-Physiological Comfort in Clothing

P. Van Ransbeeck [1], R. Benoot [1], B. Van Der Smissen [1]
[1] University College Ghent, Faculty of Science and Nature, Department of Mechatronics, Belgium

This publication aims to investigate conjugate heat and mass transfer around a clothed virtual manikin. This research can be performed at different scales: (1) at material scale where a piece of textile is investigated in 1D or 2D space or (2) at system level where a clothed cylindrical body (2D) or a complete manikin (3D) is modeled. The work is based on previous methods and results from ...