F. Bircher and P. Marmet
Institute of Print Technology, Bern University of Applied Sciences, Burgdorf, Switzerland
Electromagnetic micro valves are currently developed empirically or the different physics are treated separately. To accelerate the development-process and for a better understanding of the overall system, a multiphysics simulation is built up. This simulation considers the electromagnetics, the electronics (including the control of the process), the mechanics and the fluidics with respect to ...
G. Hulkó, C. Belavý, P. Bucek, K. Ondrejkovic, and P. Zajícek
Institute of Automation, Measurement and Applied Informatics of Slovak University of Technology, Bratislava, Slovak Republic
In systems and control theory dynamical systems described by partial differential equations are known as distributed parameter systems. So for modeling and dynamical analysis of distributed parameter systems wide possibilities are offered by COMSOL Multiphysics® based on numerical solution of sets of partial differential equations by finite element method. Paper presents actual possibilities ...
F. Lugli and F. Zerbetto
Department of Chemistry “G. Ciamician”, Università di Bologna, Bologna, Italy
A small particle or a nano-sized object placed in a liquid is subject to random collisions with solvent molecules. The resulting erratic movement of the object is known as Brownian motion, which, in nature, cannot be used to any practical advantage both in natural systems (such as biomolecular motors) or by artificial devices. If energy is supplied by external source or by chemical reactions, ...
Elastoplastic Models of the Interaction between Active Fronts of the Southern Alps and Dinarides (NE Italy and NW Slovenia)
M. Coccia, E. Carminati, F. Rolandone, M. Battaglia, D. Zuliani, and P. Fabris
Università La Sapienza, Roma, Italy
Université Pierre et Marie Curie, Paris, France
Centro Ricerche Sismologiche, Udine, Italy
We use GPS measurements and Finite Element analysis to investigate strain accumulation in the interaction between active fronts of the Southern Alps and Dinarides at the northern edge of the Adriatic micro-plate. We develop a three dimensional model of the area taking into account the regional topography, approximating the crust as an elasto-plastic medium and reproducing as close as possible ...
M. Cavenago, P. Antonini, P. Veltri, N. Pilan, V. Antoni, and G. Serianni
INFN-LNL, Legnaro, Padova, Italy
Consorzio RFX, Padova, Italy
Centro Ric. E. Fermi, Roma, Italy
A very simplified system for high voltage test is studied, considering reason for voltage holding failures which are not covered by conventional and local design criteria. A first understanding of the problem is obtained by solving the electrostatic potential in a 2D axis symmetric geometry, considering in detail the electrode shapes, and following a cascade of particle between opposite ...
V. Valente, A. Demosthenous, and R. Bayford
Department of Electronic & Electrical Engineering, University College London, London, United Kingdom
Department of Natural Sciences, Middlesex University, London, United Kingdom
Deep Brain Stimulation (DBS) is a therapeutic tool used for a number of neurological disorders including chronic pain, incontinence and movement disorders, such as Parkinson’s disease. DBS consists of the low-frequency stimulation of an area of the brain, known as basal ganglia. The stimulation is provided by clinical implant, consisting of a pulse generator and an electrode lead ...
P. Alotto, M. Guarnieri, and F. Moro
Dipartimento di Ingegneria Elettrica, Università di Padova, Padova, Italy
The proton exchange membrane is a key component in the currently widely studied Proton Exchange Membrane Fuel Cells. In this paper a fully coupled three-dimensional dynamic numerical model of the membrane including all the physically relevant phenomena, i.e. ion transport, hydration-dependent conductivity and thermal effects is presented. The highly non-linear model is discretized by means of ...
Two-Dimensional Modelling of a Non-Isothermal PrOx Reactor with Water Cooling for Fuel Cell Applications
H. Beyer, B. Schönbrod, C. Siegel, M. Steffen, and A. Heinzel
Zentrum für BrennstoffzellenTechnik GmbH, Duisburg, Germany
Institut für Energie und Umweltverfahrenstechnik, University of Duisburg-Essen, Duisburg, Germany
This work treats of a preferential oxidation reactor, which is simulated by a two-dimensional axial symmetric model. The reactor serves as purification of hydrocarbon reformat and converts the CO mole fraction from up to 1 % in the feed gas down to a few ppm at the outlet to deliver a hydrogen rich feed gas for a PEM fuel cell. The model combined chemical kinetic expressions, which were ...
A. Di Carlo, V. Sansalone, A. Tatone, and V. Varano
Modelling and Simulation Lab, Università Roma Tre, Roma, Italy
Laboratoire de Mécanique Physique, Université Paris Est, Paris, France
DISAT, Università degli Studi dell’Aquila, L'Aquila, Italy
We present a mechanical model a growing spherical shell suitable for predicting the evolution of a Saccular Cerebral Artery Aneurysms (SCAA). It relies basically on the Kröner-Lee decomposition, used to describe the interplay between the current and the relaxed configuration of body elements. Rupture or stabilization of a SCAA are the end effect of a number of biological mechanisms, still poorly ...