O. Punkkinen, A. Jorma, K. Kari, and M. Olin
B+Tech, Helsinki, Finland
Posiva, Eurajoki, Finland
VTT, Espoo, Finland
In this work the issue of saturation phase erosion caused by groundwater leakages was approached both experimentally and computationally by employing COMSOL\'s Earth Science Module. We evaluated the total mass of eroded bentonite out of a cylindrical erosion channel both numerically and experimentally, and studied its dependence on time. It was observed that logarithmic eroded mass loss as a ...
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 ...
A. Georgescu, and A. Damian
Technical University of Civil Engineering Bucharest, Bucharest, Romania
The objective of the paper is the assessment of the wind load applied to a real photovoltaic (PV) platform installed on a site situated in Brasov, which belongs to the Transilvania University. The platform has a double-tracking axis mechanism which allows the rotation of the platform disk depending on the sun position, in order to gather the maximum solar yield to produce electricity. The study ...
Nexter Systems, Versailles, France
Part of a 120mm gun has been represented as a perforated conic iron solid, surrounded by an annular screen. Inside the gun are limit conditions of isolation or thermal flux. The screen is described as a shell, receiving solar heat and exchanging with the outside atmosphere. It bears a defined number of holes on its top and bottom lines, maintaining semi-captive air between itself and the gun. The ...
S. Pietrzyk, and G.S. Yablonsky
Unité de Catalyse et Chimie du Solide, Université des Sciences et Technologies de Lille, France
Parks College, Saint Louis University, St. Louis, MO, USA
TAP (Temporary Analysis of Products) reactors are powerful instruments to study the kinetics of catalytic reactions. Their basic principle, exposition of evacuated solids of interest to narrow pulses containing very small amounts of gases, and measuring the concentrations of outgoing molecules permits to study practical catalysts under the conditions approaching those of molecular beam ...
C. Wolluschek, F. Etcheverry, M. Cachile, and J. Gomba
Mecánica de Fluidos e Ingeniería Térmica, Centro tecnológico Cemitec, Noáin, Navarra, Spain
Grupo de Medios Porosos, Facultad de Ingeniería, UBA, Buenos Aires, Argentina
Instituto de Física Arroyo Seco, UNCPBA, Tandil, Argentina.
In this work, a COMSOL model that predicts velocity and concentration fields inside an X-shaped millichannel (4 mm diameter) is developed. Water and a ink low concentration are injected simultaneously in the two inlets of the device. The mass transfer problem is solved by a Fickian model (solute concentration is low compared with the solvent). The parameters in this study are: initial inlet mass ...
C. Cecioni, and G. Bellotti
University of Roma TRE, DSIC, Rome, Italy
This paper presents a numerical model based on the mild-slope equation (MSE for short) solved using the PDE mode of the software COMSOL Multiphysics suitable to reproduce the propagation of small amplitude tsunamis in the off-shore field. The model solves the governing equations in the frequency domain and allows the reproduction of the frequency dispersion for broad banded spectrum sea states. ...
Henrik Steepler earned his PhD in Computer Science in 1999 at Chalmers University, Sweden. Since 2003, he has been working at Microsoft on emerging markets like Security, Virtualization, and since 2007 on their High Performance Computing (HPC) initiative. He is now managing the partner network for Microsoft in Europe, the Middle East, and Africa around HPC.
S.V. Aher, P. Devillers, G. Fau, B. Tranain, and C. Buisson
Centre des Matériaux de Grande Diffusion, Ecole des Mines d’Alès, Alès cedex, France
Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, Uttar Pradesh, India
Centre Scientifique et Technique du Bâtiment, France
Surface coating can fullfil their function satisfactorily over an extended period of time only if there is a good bond between the concrete substrate and the coating. The most numerous cases of blistering affect the airtight covers of the concrete subjected to negative pressures of humidity from the support. The general objective of this study is the understanding of the blistering phenomenon. ...
M. Gulliksson, and S. Edvardsson
Mid Sweden University, Sundsvall, Sweden
Given any equation L(u)=0, e.g. a partial differential equation, it can be considered to be the stationary solution of a time dependent equation (in fact, time need only to be fictitious time not real time). Our approach is to choose the time dependence in analogy with an oscillating particle system including damping in order to damp out the time derivatives and attain a stationary solution ...