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Voyez comment la modélisation et la simulation sont utilisées par les industries La modélisation et la simulation multiphysiques pilotent l'innovation dans tous les grands secteurs d'activité et dans le monde universitaire — comme en témoignent les nombreuses utilisations présentées dans des articles et des posters techniques présentés par des ingénieurs, chercheurs et scientifiques à la Conférence COMSOL chaque année. Inspirez-vous des récents proceedings réunis ci-dessous, ou, pour trouver les présentations les plus intéressantes dans votre domaine d'intérêt, utilisez la recherche rapide.

Consultez les proceedings de la Conference COMSOL 2024

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Mathematical Investigation and CFD Simulation of Monolith Reactors: Catalytic Combustion of Methane

M. Ghadrdan[1], and H. Mehdizadeh[2]
[1]Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
[2]Department of Chemical Engineering, Tarbiat Modares University, Tehran, Iran

Interest in the production of hydrogen from hydrocarbons has grown significantly recently. In order to achieve high surface to volume ratio with reasonable pressure drop, monolithic reactors are used. The goal of this work is to develop a two-phase (gas & solid) transient catalytic ... En savoir plus

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 ... En savoir plus

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

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 ... En savoir plus

Modeling Gate-Tunable Ionic Transport Using Atomically Thin Patterned Graphene Membrane

C.-J. Shih [1], T. Tian [1], R. Wyss [2], K. Yazda [3], H. G. Park [3],
[1] D-CHAB, ETH Zürich, Switzerland
[2] D-MATL, ETH Zürich, Switzerland
[3] D-MAVT, ETH Zürich, Switzerland

Patterned two-dimensional (2D) materials have recently become promising candidates for separation processes in both gaseous and aqueous phases, due to mechanical strength and atomic thickness. Conventional separation technique using 2D materials are limited by the surface charge of 2D ... En savoir plus

Modeling Ion Motion in a Miniaturized Ion Mobility Spectrometer

S. Barth, and S. Zimmermann
Drägerwerk AG & Co. KGaA, Lübeck, Germany

Ion mobility spectrometry provides fast detection of very low concentrations of chemical substances. Simple instrumentation combined with high sensitivity and high selectivity are the advantages of this technique. One well established field of application is the detection of hazardous ... En savoir plus

Modeling and Simulation of Flat Sheet Membrane with Physical and Chemical Absorption

N. Ghasem [1], M. Al-Marzouqi [2],
[1] UAE University, Al-Ain, UAE
[2] UAE University, Al-Ain, UAE

Greenhouse gases trap heat and make the planet warmer. The main greenhouse gases emitted by human activities are: Carbon dioxide (CO2). The use of fossil fuel is the primary source of CO2 [1, 2]. Accordingly, there is a need for an efficient and novel separation processes for removal of ... En savoir plus

Modeling and Simulation of Membrane Contactor Employed to Strip CO2 from Rich Solvents via COMSOL Multiphysics®

N. Ghasem[1], M. Al-Marzouqi[1], N. A. Rahim[1]
[1]United Arab Emirates University, Al-Ain, United Arab Emirates

A mathematical model is developed for the stripping of CO2 from rich solvent. The rich solvent (aqueous NaOH) is used in CO2 absorption from natural gas through gas-liquid hollow fiber membrane contactor. The polyvinylidene fluoride (PVDF) hollow fiber membrane was fabricated via ... En savoir plus

A Wide Range MEMS Vacuum Gauge Based on Knudsen’s Forces

V. Sista, and E. Bhattarchaya
Microelectronics and MEMS Lab
Department of Electrical Engineering
Indian Institute of technology Madras
Chennai, India

A MEMS based Knudsen’s pressure gauge working in the range of 1e-5 mbar to 10 mbar is designed and simulated in COMSOL. The working principle is based on Knudsen’s forces that arise when two plates are held at different temperatures and their separation is comparable to the mean free ... En savoir plus

An Evaluation of CO2 Sequestration in Organic-Rich Shales Using COMSOL Multiphysics®

R. Barati [1], S. Cudjoe [1],
[1] University of Kansas, Lawrence, KS, USA

Organic-rich shale resources remain an important source of hydrocarbons considering their substantial contribution to crude oil and natural gas production around the world. Moreover, as part of mitigating the greenhouse gas effects due to the emissions of carbon dioxide (CO2) gas, ... En savoir plus

Multiphysics Modeling of an Ion Mobility Spectrometer

T. Adams, and J. Fulton

Naval Surface Warfare Center, Crane Division, Crane, IN, USA

In Eiceman and Karpas’s book Ion Mobility Spectroscopy (2005), they define Ion Mobility Spectroscopy (IMS) as "the principles, methods, and instrumentation for characterizing chemical substances on the basis of velocity of gas-phase ions in an electric field." The production of the ... En savoir plus

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