Visualisation of the Internal Processes of a Fuel Cell with the Help of an Application Built with the COMSOL Multiphysics® Software
A. George , L. Fromme 
 University of Applied Sciences Bielefeld, Department of Engineering Sciences and Mathematics, Bielefeld, Germany
The objective was to make a visualisation application for the pupil's lab of the University of Applied Sciences Bielefeld. The application serves as a supplement for a workshop. It should provide a better understanding of a fuel cell, to visualize important influences and collect first experience with a simulation. To achieve this objective, a model of the fuel cell is created. The ...
M. Weber, T. Kletschkowski, and B. Samtleben
Helmut-Schmidt-University Hamburg, Germany
An inverse finite element method for noise source identification in an aircraft cabin is presented. If all sound sources are located on the boundary of the cabin, the equation system resulting from a matching FE model can be re-sorted in such a way that computation of the unknown boundary data is possible from measurement data taken in the cavity. The method is first validated using a simplified ...
Massachusetts Institute of Technology, Cambridge, MA, USA
Markus Zahn received all his education at MIT, was a professor in the Department of Electrical Engineering at the University of Florida, Gainesville from 1970-1980, and then joined the MIT Department of Electrical Engineering and Computer Science faculty in 1980. He works in the Laboratory for Eelectromagnetic and Eelectronic Systems, in the MIT High Voltage Research Laboratory, is the Director ...
X. Wang, R. Guthrie, and M. Isac
McGill Metals Processing Centre, Montreal, Canada.
A numerical multiphase flow model is proposed to predict the behavior and motion of entrained inclusions in liquid steel, as they enter the orifice of a LiMCA (Liquid Metal Cleanliness Analyzer) sensor for assuring steel quality. The method of measurement is based on the electric sensing zone (ESZ) technique. The liquid metal flow field within the ESZ is obtained by solving the Navier-Stokes ...
I. Neitzel, U. Prüfert, and T. Slawig
DFG priority program SPP 1253, Technische Universität Berlin, Berlin, Germany
DFG research center Matheon, Technische Universität Berlin, Germany
DFG Cluster of Excellence The Future Ocean, DFG priority progam SPP 1253, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
We use COMSOL Multiphysics to solve time-dependent optimal control problems for partial differential equations whose optimality conditions can be formulated as a PDE. For a class of linear-quadratic model problems we summarize known analytic results on existence of solutions and first order optimality conditions that exhibit the typical feature of time-dependent control problems, namely the fact ...
B. Kröger, U. Yaramanci, and A. Kemna
1 University of Bonn
We present the results of full-waveform time-dependent finite-element modelling of coupled seismoelectromagnetic wave propagation in fluid-saturated porous media. To describe the seismoelectric response of the system a new set of equations is developed which couple the poroelasticity theory and Maxwell’s equations via flux/force transport equations in a thermodynamical sense. The coupling ...
Study of Thermo-Electrical and Mechanical Coupling During Densification of a Polycrystalline Material Using COMSOL
F. Mechighel[1,2,3], B. Pateyron, M. El Ganaoui, and M. Kadja
CNRS SPCTS UMR 6638, Universite de Limoges, France
Département de Génie Mécanique, Universite de Annaba, Algerie
Département de Génie Mécanique, Universite de Constantine, Algerie
Spark Plasma Sintering (SPS) is a promising rapid consolidation technique that allows a better understanding and manipulation of sintering kinetics and therefore makes it possible to obtain polycrystalline materials (ceramic or metallic) with tailored microstructures. A numerical simulation of the electrical, thermal and mechanical coupling during SPS is performed. Equations for conservation for ...
R. Dufour , C. Wu, F. Bendriaa, V. Thomy, and V. Senez
BioMEMS Group, IEMN, University of Lille Nord de France, Villeneuve d’Ascq, France
This paper presents an Analog to Digital Microfluidic Converter (ADMC) using passive valves and enabling the conversion of a continuous liquid flow into droplets for Electro-Wetting On Dielectric (EWOD) actuation. Valves calibration, geometry characteristics and losses reduction have been optimized using microfluidic application mode of COMSOL Multiphysics®.
Passive and Active Deformation Processes of 3D Fibre-Reinforced Caricatures of Cardiovascular Tissues
A. Di Carlo, P. Nardinocchi, T. Svaton, and L. Teresi
Modelling and Simulation Lab, Università Roma Tre, Roma, Italy
Dept. of Structural & Geotechnical Engineering, Università di Roma La Sapienza, Roma, Italy
Dept. of Mathematics, University of West Bohemia, Pilsen, Czech Republic
In this paper, we present a mathematical model of contractile elastic solids meant to simulate various districts of the cardiovascular system, and based on the concepts of active deformation and embedded muscle fibres. Specifically, here we deal with the modeling of the gross mechanics of the Left Ventricle (LV) which is strictly related to its pump function. As is well known, the effectiveness ...
E. Sparacino, D. Madeo, and C. Mocenni
Dipartimento di Ingegneria dell’Informazione, Università di Siena, Siena, Italy
This work concerns the development of a new direct parameter identification procedure for a class of nonlinear reaction- diffusion equations. We assume to know the model equations with the exception of a set of constant parameters, such as diffusivity or reaction term parameters. Using the Finite Element Method we are able to transform the original partial differential equation into a set of ...