Transient Conjugate Optical-thermal Fields in Thin Films Irradiated by Moving Sources: A Comparison between Back and Front Treatment
N. Bianco, O. Manca, and D. Ricci
Dipartimento di Energetica, Termofluidodinamica applicata e Condizionamenti ambientali, Università degli Studi di Napoli Federico II, Napoli, Italy
Dipartimento di Ingegneria Aerospaziale e Meccanica, Seconda Università degli Studi di Napoli, Aversa (CE), Italy
A two dimensional instationary analysis of the conjugate optical-thermal fields induced in a multilayer thin film structure on a glass substrate by a moving Gaussian laser source is carried out numerically in order to compare back and front laser treatment processes. COMSOL Multiphysics 3.4 code has been adopted to solve the combined thermal and electromagnetic problem in order to compare the two ...
M. Benilov, and M. Faria
Departamento de Física, Universidade da Madeira, Funchal, Portugal
Current transfer from high-pressure arc plasmas to thermionic cathodes may occur in a diffuse mode, when the current is distributed over the front surface of the cathode, or in a spot mode, when most of the current is localized in one or more small areas. Spectra of perturbations of 3D steady-state current transfer to thermionic cathodes of a high-pressure argon arc have been computed in the ...
C. Trenado, D. Strauss[1,2], and M. Wittmar
Computational Diagnostics & Biocybernetics Unit, Saarland University Hospital, Homburg, Germany
Leibniz-Institute for New Materials, Saarbrücken, Germany
Progress in coating technology has allowed for the development of free-chromate corrosion inhibitors, which are able to smartly migrate when required. In order to support the coating design, we propose a hybrid mathematical model to study the inhibitor's release by taking into account the thermodynamics and kinetics involved in the corrosion process. The proposed model is ...
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 ...
Extraction of Phenolic Compound from Grape Fruit. A Comparison Between a 3D FEM Model and Experimental Results
E. Madieta, I. Zouid, R. Siret, and F. Jourjon
Laboratoire GRAPPE, ESA, Angers, France
Fresh fruits and vegetables are gaining importance in the human diet because they contain many beneficial compounds. Among these compounds, phenols are of vital importance due to their antioxidant properties. It is well evident from previous researches that the skin of red grapes is considered a good source of phenols. The aim of this work is to simulate the extraction procedure of phenols in ...
Simulation of a Diesel Oxidation Catalyst Used in a NOx Storage and Reduction system for Heavy Duty Trucks
C. Odenbrand, and E. Senar Serra
Department of Chemical Engineering, Lund University, Lund, Sweden
This work concerns the performance of an oxidation catalyst used in a NOx storage and reduction system. The oxidation of NO is the main objective of this study, where the presence of CO and propene has also been taken into account. Experimental data has been determined on a monolithic oxidation catalyst mounted after a heavy duty diesel engine in a rig. The conversion of hydrocarbons is predicted ...
J. Caire, A. Bouh, and E. Guilminot
LEPMI, UMR 5631, INPG - CNRS, Saint Martin d’Hères, France
EPCC, Arc'Antique, Nantes, France
Restoration of archaeological materials from oceans is a major activity of Arc’ Antique. Organic materials such as wood, tissues, leathers, papers and ceramics found in sea water are always impregnated with salts. Rinsing such archaeological objects with pure water to extract the salts takes too long, so electrophoresis was used to improve the salt extraction. The objective of this ...
B. Ottosson, Y. Jouahri, C. Rusu, and P. Enoksson
Imego AB, Gothenburg, Sweden
Chalmers University of Technology, Gothenburg, Sweden
The objective of this work has been to realize a feasibility study of a cooling device for a SQUID sensor using liquid nitrogen flowing through micro channels. The design consists of an epoxy cylindrical vacuum vessel skewed by a silicon microchannel heat sink. The SQUID sensor is situated directly on top of the microchannel heat sink. The device is used at room temperature and should be able to ...
Atomic Energy of Canada Limited, Mississauga, Ontario, Canada
RFSP-IST (Reactor Fueling Simulation Program) is a computer code used for the full-core neutronics design and analysis of CANDU® reactors. RFSP-IST calculates the static flux and power distributions in the core by solving the neutron diffusion equation in two energy groups. For validation purposes, results from RFSP-IST are often compared with those from other codes. This paper documents the ...
A. Auge, F. Wittbracht, A. Weddemann, and A. Hütten
Department of Physics, University of Bielefeld, Germany
Transport phenomena in spatially periodic magnetic systems, in particular the directed transport of magnetic beads in a so called magnetic ratchet (Brownian motor) are considered. Simulations are carried out to test and optimize this system, where the Smoluchowski equation with flux terms for the magnetic and gravitational force is used. Furthermore, experiments are carried out to verify the ...