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See How Multiphysics Simulation Is Used in Research and Development

Engineers, researchers, and scientists across industries use multiphysics simulation to research and develop innovative product designs and processes. Find inspiration in technical papers and presentations they have presented at the COMSOL Conference. Browse the selection below or use the Quick Search tool to find a specific presentation or filter by application area.

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Modeling Transient Adsorption/Desorption Behavior in a Gas Phase Photocatalytic Fiber Reactor

S. Denys [1], J. Van Walsem [1],
[1] Sustainable Energy, Air & Water Technology, Department of Bioscience Engineering, University of Antwerp, Belgium

Integration or retrofitting of photocatalytic air purifying units into HVAC (Heating, Ventilation and Air Conditioning) equipment is an interesting approach for abating indoor air pollution and removal of volatile organic compounds. An attractive possibility is the use of glass fiber ... Read More

Multiphysics Simulation of the Effect of Sensing and Spacer Layers on SAW Velocity

P. Zheng[1,4], D.W. Greve[2,4], and I.J. Oppenheim[3,4]

[1]Department of Physics, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
[2]Department of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
[3]Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
[4]National Energy Technology Laboratory, Pittsburgh, Pennsylvania, USA

Surface acoustic wave gas sensors use a chemically sensitive resistive layer to detect gas concentration. The resistivity of the sensing material, the sensing layer thickness, and the spacer layer thickness all affect the surface wave propagation velocity. Existing analytic theory ... Read More

Multiphysics Studies for the Micromegas Detector

E. Karentzos [1], T. Alexopoulos [2],
[1] National Technical University of Athens, CERN, Switzerland
[2] National Technical University of Athens, Greece

We present studies of the electric field configuration that guides the electrons to the strips through the mesh and its importance to the detector’s optimal operation. Furthermore, analysis of the gas propagation inside the chamber for different gas distribution schemes is discussed. All ... Read More

Diffusion and Reaction in Fe-Based Catalyst for Fischer-Tropsch Synthesis Using Micro Kinetic Rate Expressions

A. Nanduri[1], P. L. Mills[1]
[1]Department of Chemical & Natural Gas Engineering, Texas A&M University, Kingsville, TX, USA

Fischer-Tropsch synthesis (FTS) is a highly exothermic polymerization reaction of syngas (CO+H2) in the presence of Fe/Co/Ru-based catalysts to produce a wide range of paraffins, olefins and oxygenates, often known as syncrude. Multi-Tubular Fixed Bed Reactors (MTFBR) and Slurry Bubble ... Read More

Predictive Model for UV Light Irradiation and PCO Reaction Kinetics in a Photocatalytic Reactor

S. Denys [1], J. Roegiers [1], J. van Walsem [1],
[1] University of Antwerp, Antwerp, Belgium

A novel type of photocatalytic reactor, i.e. parallel flow tube reactor (PFTR) is presented for the degradation of indoor air pollution with UV-light. A Multiphysics model was developed in COMSOL Multiphysics® to predict the steady-state behavior under different inlet concentrations and ... Read More

Full System Modeling and Validation of the Carbon Dioxide Removal Assembly

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

The Atmosphere Revitalization Recovery and Environmental Monitoring (ARREM) project was initiated in September of 2011 as part of the Advanced Exploration Systems (AES) program. Under the ARREM project, testing of sub-scale and full-scale systems has been combined with multiphysics ... Read More

Simulation of Supercritical Fluid Extraction Process

P. Katiyar [1], S. Khanam [1],
[1] Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India

This paper deals with the simulation of mathematical model for supercritical extraction. Reverchon, 1996 extracted sage oil using supercritical extraction method from sage leaves at 9 MPa and 50 ᵒC. Four mean size of sage leaves ranging from 0.25 to 3.10 mm were taken for extraction with ... Read More

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 ... Read More

Modelling of a Direct Methanol Fuel Cell

J.-F. Drillet [1],
[1] DECHEMA-Forschungsinstitut, Frankfurt, Germany

This work aims at the modelling of a 5 cm^2 Direct Methanol Fuel Cell (DMFC) with mixed serial/parallel serpentine flow fields in terms of current/voltage behaviour. The geometrical design of the single cell is presented in figure 1. The function principle as well as the electrochemical ... Read More

Virtual Long Term Testing of High-Power Fiber Lasers

J. Schüttler [1], B. Neumann [1], S. Belke [1], F. Becker [1], S. Ruppik [1],
[1] Coherent | ROFIN, Hamburg, Germany

The remarkable power scaling of high power fiber lasers over the past years has become more and more challenging, because the effects of transverse mode instability (TMI) and photodarkening (PD) of the fiber are limiting the effective output power of typical industrial fiber lasers. The ... Read More

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