R. Cumeras, I. Gràcia, E. Figueras, L. Fonseca, J. Santander, M. Salleras, C. Calaza, N. Sabaté, and C. Cané
Instituto de Microelectrónica de Barcelona, Barcelona, Spain
A micro Planar Ion Mobility Spectrometer (P-FAIMS) has been simulated using multiphysics software. In P-FAIMS target ions are discriminated by the application of the proper separation voltages to the electrodes of the system. Modelling of vapour phase ions of two compounds have been studied for different values of electric field amplitude to gas number density (E/N) ratio: a health risky volatile ...
S. Cavadias , B. Trifi , S. Ognier, and N. Bellakhal
Laboratoire de Génie des Procédés Plasma et Traitement de Surface, Ecole Nationale Supérieure de Chimie de Paris, Université Pierre et Marie Curie, Paris, France
Laboratoire de Chimie Analytique et Electrochimie, Département de Chimie, Faculté des Sciences de Tunis, Université Tunis El Manar, Tunis, Tunisie
Département de Chimie et de Biologie Appliquées, Institut National des Sciences Appliquées et de Technologie, B.P. N°676, 1080 Tunis Cedex, Tunis, Tunisie
The use of plasmas for the treatment industrial effluents provides a new alternative to the decontamination of wastewater. The strong oxidizing species (O,O3, OH) generated by the plasma, at room temperature, can oxidise organic pollutants present in the water. Our simulation deals with the degradation of methyl red by a Glidarc humid air plasma producing active species, mainly OH, that can ...
Modeling of Coupled Fluid Flow and Shear-induced Solidification Kinetics in Rheocasting of Aluminium Alloys
G. Maizza, and G. Lorenzatto
Politecnico di Torino
Dipartimento di Scienza dei Materiali ed Ingegneria Chimica
The model proposed by Schneider et al., for polymers is herein adapted in order to assess its suitability in elucidating the thixotropic behavior of aluminum alloys. The COMSOL Multiphysics program is employed to solve the inherent coupled mathematical problem, consisting in the kinetic ordinary differential equations and the momentum and energy transport partial differential equations. The ...
A. Melas, A.G. Konstandopoulos, L. Isella, Y. Drossinos
Department of Chemical Engineering, Aristotle University, Thessaloniki, Greece
European Commission, DG Energy, Luxemburg
European Commission, Joint Research Centre, Ispra, Italy
Aerosol and colloid aggregates are complex fractal-like structures composed of primary spheres. The drag force exerted on a fractal-like object is usually determined by solving numerically the Stokes equation. In this study we calculate it by relating it to a molecule-aggregate collision rate. We create the fractal aggregates with a cluster-cluster aggregation algorithm using the software ...
R&D Process Design Principal Engineer, Procter & Gamble, Italy
Outline of presentation: Comsol is a very flexible platform, ideal to model rheology modification under flow Analogy with reactive flows allows modeling of both thixotropy and gelation with decent level of accuracy and predictability It is possible, to a certain extent, to use 1D rheology to extrapolate 3D behavior ---------------------------------- Keynote speaker's biography:Vincenzo ...
Schellen, H.L., van Aarle, M.A.P., van Schijndel, A.W.M.J.
Technische Universiteit Eindhoven
The Walloon Church in Delft is an important monumental church in the Netherlands. The monumental interior parts consist of a monumental pulpit, monumental pews, monumental escutcheons and an important burial monument. The monumental Bätz/Witte organ in the church dates back to 1869 and was last restored in 2000. The heating system in the building was originally a direct hot air system, Mark Fohn ...
C. Bayer, S. Stiefel, M. Follmann, and T. Melin
AVT Chemical Process Engineering, RWTH Aachen University, Aachen, Germany
Reactive extraction of organic acids from an aqueous solution to an alkaline stripping fluid is based on a selective barrier allowing permeation of non-polar molecules, which subsequently react with the stripping agent. The shift from the organic acid to its base induced by the chemical equilibrium enhances mass transfer inside the membrane’s porous substructure. A model of the porous layer ...
Simulation of the Inverse Extrusion of a Brass Rod by the Coupling of Fluid, Mechanical, Thermal and Ale Modules
C. Mapelli, and L. Bergami
Politecnico di Milano
An efficient simulation of the inverse extrusion process has been performed through the coupling of three modules in COMSOL Multiphysics: fluid-dynamics, general heat transfer and ALE. The strain, the strain rate, and the stress field can be completely defined after the complete definition of the velocity field of the material under the action of the tool. The definition of the stresses and of ...
Bruce A. Finlayson
University of Washington
This talk demonstrates the success in teaching chemical engineering undergraduates to use COMSOL Multiphysics (FEMLAB) to solve realistic problems in a project format. Undergraduates have been creative and solved problems much more difficult than those in their textbooks, thus gaining a deeper understanding of transport processes. Illustrations are also given how they check to see they’ve ...
A. W. M. van Schijndel
Technische Universiteit Eindhoven, Eindhoven, Netherlands
The paper presents the modeling and simulation of 2D heat and moisture transport with and without air movement for a building construction. The research focuses on the effect of air movement through building constructions. Although the typical air movement inside building constructions is quite small (velocity is of order ~10-5 m/s), this research shows it might have much more impact on the ...