A.Torrents, N. Godino, F.J. del Campo, F.X. Muñoz, and J. Mas
Universitat Autònoma de Barcelona, Spain
Microbia Fuel Cells (MFC’s) are complex environments where electrochemical, physical and biological aspects must be considered together. In this work we present a 1D model partially describing a Shewanella oneidensis MFC that degrade sodium lactate [lactate -> Acetate + CO2 + 2H+ + 2e-]. The model, simulated using COMSOL, focuses on pH implications of the MFC operation. Release of protons during ...
A. Plana-Fattori[1,2], E. Chantoiseau[1,2], C. Doursat[1,2], and D. Flick[1,2]
AgroParisTech, Massy, France
INRA, Massy, France
Many liquid food processes involve coupled phenomena of fluid flow, heat transfer and product transformation. A typical example is the heat treatment of a starch suspension inside a tubular heat exchanger. Fluid flow influences heat transfer which determines temperature evolution along fluid trajectories. Temperature locally influences the food product transformation. The latter influences ...
BD Medical - Medical Surgical Systems, Helsingborg, Sweden
Anders B Nilsson graduated M. Sc. in engineering physics from Lund University in Sweden. He has been working in the R&D department at BD Medical as principal engineer and project leader since 2005. He uses COMSOL for a wide range of functions, such as early concept development and qualification of products.
O. Toscanelli, and V. Colla
Scuola Superiore S. Anna, Pisa, Italy
The contact between infinitely rigid body and deformable part is studied using the velocity as a dependent variable. A simple forging case is evaluated. The velocity approach is realized by means of using COMSOL with the Equation-Based Modeling. The contact model evaluated in this work is suitable to model the forging process. For a given mesh and element it is possible to choose the optimum ...
M.Cavenago, and P. Veltri
INFN-LNL, Legnaro, PD, Italy
Consorzio RFX, Padova, Italy
Neutral Beam Injectors for ITER require development of negative ion sources and beams with carefully reduced beam divergence. In the accelerator this is compensated by the focusing due to the fringe effect of the electric field, while in the drift region, where the beam is propagating without further acceleration, a background positive charge is required to assure beam transmission with small ...
FEM-Investigations Of Superconductor/Ferromagnet Heterostructures: A Compliance Test Between Various Models
P. Krüger, F. Grilli, Y. Genenko, and R. Brambilla
Karlsruhe Institute of Technology, Germany
Technical University Darmstadt, Germany, ERSE Spa, Milan, Italy
In recent years, a number of numerical and finite-element-methods in particular - some implemented in COMSOL - have been developed to investigate various properties of superconducting materials. Following converse conclusions by different models regarding similar physical phenomena, the consistency of these models has been of increased interest. In this publication the accordance of an ...
Numerical Inversion of Surface Deformation at Long Valley Caldera (California) By Using 3D Mechanical Models
S. Pepe, P. Tizzani, and A. Manconi
IREA-CNR, Napoli, Italy
We use 3D numerical models to analyze the ground deformation observed at Long Valley Caldera (LVC) between 1992 and 2000 via space-based geodetic techniques. More specifically, we implement a complex model that includes the topography and the material heterogeneities information of LVC. The 3D heterogeneous models are implemented of COMSOL models in a Genetic Algorithm optimization to constrain ...
A. Thoraval, R. Farret, A. Cherkaoui, and P. Gombert
INERIS, Nancy, France
INERIS, Verneuil, France
This paper presents preliminary estimations of CO2 overpressure into the reservoir and CO2 leakage through the caprock and the overburden. A simple, two-phase flow model in porous media based on Darcy’s law was used, in order to explore easily long time periods. The models produced by COMSOL Multiphysics allow sensitivity studies and preliminary evaluations of the relations between CO2 leakage ...
M. Antczak, P. Idziak, and W. Lyskawiski
Poznań University of Technology, Poland
The paper presents the results of the experiment consisting in determination of the influence of the magnetic field on deformations of the stator and the rotor of the DC motor. The numerical model of the motor for the frameless DC machine of the G series has been elaborated. Real material properties and the phenomenon of the magnetic circuit saturation have been taken into consideration. The ...
S. Gidon, M. Brun, and S. Nicoletti
CEA Minatec, Optronic Department, Grenoble, France
Monitoring of indoor CO2 concentration is of particular interest to detect room occupancy in order to optimise power consumptions of building. One technological approach is to use optical detection using specific absorption lines of CO2 molecules in the infrared domain close to 4.2 μm. Key features for a wider use in public and private buildings are power consumption and price. Such optical ...