University of Napoli Federico II, Naples, Italy
This paper presents some results of numerical simulations carried out to investigate the basic hydrodynamic interactions between the laminar flow in the water column above triangular bedforms and the Darcian flow in the underlying permeable sediments. The flow was described by the Navier-Stokes equation in the free region and the Darcy equation in the porous region. Numerical simulations were ...
S. Druart, D. Flandre, and L.A. Francis
Université catholique de Louvain - ICTEAM, Louvain-la-Neuve, Belgium
In this paper, a methodology to simulate the electric behavior of spiral inductances is presented and discussed. All the methodology is built with the COMSOL software used with the Matlab scripting interface and then allows performing fully parameterized simulations. The program architecture is explained and is used to simulate two applications. The first calculates the voltage induced by an ...
F. Banfi, D. Nardi, and M. Travagliati
Dipartimento Matematica e Fisica, Università Cattolica, Brescia, Italy
JILA, University of Colorado at Boulder, Boulder, Colorado, United States
Center for Nanotechnology Innovation @NEST, Istituto Italiano di Tecnologia, Pisa, Italy
Ultrafast optical generation of pseudosurface acoustic waves is investigated in hypersonic surface phononic crystals. The thermomechanics is modeled from first-principles to follow the initial impulsive heat-driven displacement in the time domain. Spectral decomposition of the displacement over the surface phononic crystal eigenmodes outlines asymmetric resonances featuring the coupling between ...
L. Teresi, and A. DeSimone
LaMS - Modeling & Simulation Lab, University Roma Tre, Roma, Italy
SISSA - International School for Advanced Studies, Trieste, Italy
We deal with Liquid Crystal Elastomers (LCEs) having hybrid alignment (HNEs), that is, fabricated with a given non-homogeneous nematic orientation. For such a materials, permanent distortions induced by deswelling can be compensated by those resulting from cooling below the transition temperature, thus yielding the possibility of producing temperature-driven actuators. Here, we simulate the ...
G. Selembo, P. Selembo, J. Stanton, and G. Paulsen
University of North Carolina
Surface aeration systems are used in the wastewater treatment industry for the transfer of oxygen in the activated sludge process. These systems are capital intensive and also require a significant amount of energy to operate. Scale-up and design of these systems is largely empirical, and due to the size of these systems, modifications for experimental testing can be economically prohibitive. ...
G. Tracanelli, M. Culos
Studio di Ingegneria Industriale Tracanelli, San Vito al Tagliamento, Italy
The energy pay back is one of the most interesting field especially in the steel industry where this contribution is strictly connected to steams and emissions inside and outside the plant. Perhaps, this application is sometimes disturbed by a strong variation of emissions (\"off gas\"). One example is the arc furnace where the process is very discontinuous and there are many fluctuations in the ...
S. Zhang, M. Pal, P. Barthelemy, M. Lei
Visualization Sciences Group, Burlington, MA, USA
Shell International Exploration and Production, Rijswijk, The Netherlands
The mass and recoverability of oil and gas in unconventional reservoirs strongly depend on the understanding the petrophysical properties of the rocks at a large range of scales. Three-dimensional imaging is capable of unveiling the detailed microstructures within the rocks down to the nanometer scale. Using a multiscale imaging protocol, a Devonian shale rock sample with heterogeneities is ...
Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
This presentation gives an account of how COMSOL Multiphysics® software has helped to accelerate research and development. It has been used to simulate energy systems such as fuel cells, biomedical systems such as hydrogels and human skin, and monolithic catalytic converters. Each of these systems requires a mathematical model that can accurately represent the relevant physics, and which can be ...
Charakterisierung einer magnetorheologischen Flüssig-keit für die Innenhochdruck-Umformung von Rohren
Dal Bó, P., Blankl, A., Geiger, M.
Universität Erlangen-Nürnberg, Lehrstuhl für Fertigungstechnologie, Erlangen, Deutschland
Bei der Innenhochdruck-Umformung von Rohren findet die Umformung durch eine Kombination aus Aufweiten und Stauchen statt. Aufgrund des Innendrucks und der daraus resultierenden Reibung zwischen Werkzeug und Werkstück erfolgt bei einem sehr langen Rohr kein weiteres Nachschieben in die Aufweitzone, sondern lediglich ein Aufstauchen in der Führungszone. Mit Hilfe der Strömung eines hochviskosen ...
Contino, A.1, Feldheim, V.1, Lybaert, P.1, Deweer, B,2, Cornil, H.2
1 Faculty of Engineering – Thermal Engng. & combustion Lab., Mons – Belgium
2 Arcelor Innovation, Liège, Belgium
The self-induced ion plating (SIIP) process is a new physical vapor deposition process based on the evaporation of a metallic target (i.e. tin) thanks to a magnetron sputtering system. The aim of this work is to develop a numerical simulation model of the SIIP process in order to predict the target temperature field and from it, the coating profile on the substrate. The simulation of the SIIP ...