C. Horch, S. Schlayer, and F. Stallmach
Faculty of Physics and Earth Sciences, University of Leipzig, Leipzig, Germany
For low-field NMR (Nuclear magnetic resonance), NdFeB permanent magnet arrangements are proposed to provide the static polarizing magnetic field. Especially a parallel and a circular arrangement of the permanent magnets, iron yokes and small shim magnets were tested and improved by COMSOL. The intent was to guide the design and the construction of NMR magnets by calculating the magnetic field ...
A.H. Feyissa, J. Adler-Nissen, and K.V. Gernaey
Food Production Engineering, National Food Institute, Technical University of Denmark, Kgs. Lyngby, Denmark
Department of Chemical and Biochemical Engineering, Technical University of Denmark, Kgs. Lyngby, Denmark
A 2D mathematical model of coupled heat and mass transfer describing oven roasting of meat was formulated from first principles. The current formulation of model equations incorporates the effect of shrinkage phenomena and water holding capacity. The model equations are based on conservation of mass and energy. The pressure driven transport of water in meat is expressed using Darcy’s equation. ...
Dr., ABB Corporate Research, Sweden
Outline of presentation: In electromagnetic technology applications the finite element method is very well suited for a wide range of problem types For many cases, in particular when inhomogeneous materials having complex properties are involved as well as when multiphysics couplings are essential, it is the only option available The somewhat unfavourable performance scaling with problem ...
V.M. Rodriguez-Zermeno, M.P. Sørensen, N.F. Pedersen, N. Mijatovic, and A.B. Abrahamsen
DTU Mathematics, Lyngby, Denmark
DTU Electrical Engineering, Lyngby, Denmark
Materials Research Division, Risø, DTU, Roskilde, Denmark
This work presents a method to calculate AC losses in thin conductors such as the commercially available second generation superconducting wires through a multiscale meshing technique. The main idea is to use large aspect ratio elements to accurately simulate thin material layers. For a single thin superconductor, several standard test cases are simulated including transport current, externally ...
C. Caruso, P. Lonetti, and A. Manna
Department of Structural Engineering, University of Calabria, Arcavacata di Rende, CS, Italy
A generalized model to predict dynamic crack propagation in fiber composite structures is proposed. The proposed approach is based on a generalized formulation based on the Fracture Mechanics approach and Moving mesh methodology. Consistently to the Fracture Mechanics, the crack propagation depends from the energy release rate and its mode components, which are calculated by means of the ...
Numerical Modelling of a Free-Burning Arc in Argon. A Tool for Understanding the Optical Mirage Effect in a TIG Welding Device
J-M. Bauchire, E. Langlois-Bertrand, and C. de Izarra
GREMI, CNRS, Université d’Orléans, Orléans, France
In this paper, we present the numerical modelling of a free-burning arc and its application to the understanding of optical mirage effect which could occur in a TIG (Tungsten Inert Gas) device used in welding applications.
S. Curcio and M. Aversa
Department of Engineering Modeling, University of Calabria, Arcavacata di Rende, CS, Italy
The aim of the present work is the formulation of a theoretical model describing the transport phenomena involved in food drying process. The attention has been focused on the simultaneous transfer of momentum, heat and mass occurring in a convective drier where hot dry air flows, in turbulent conditions, around the food sample. The proposed model does not rely on the specification of ...
G.Y. Sun, O. Sekula, and C. Albanbauer
Brugg Kabel AG, Brugg, Switzerland
A 2D model of coupled electricthermal application is used to calculate the temperature distribution in a high voltage dummy cable laid in free air, where no high voltage is applied. Resistive loss heats the cable while the surrounding air cools it down. The steady-state condition is reached when heat balances. The steady-state temperature depends not only on the resistive loss but also on the ...
Design and Simulation of a Microscale Magnetophoretic Device for the Separation of Nucleated Fetal Red Blood Cells from Maternal Blood
G. Schiavone, D.M. Kavanagh, and M.P.Y Desmulliez
Politecnico di Torino, Torino, Italy
MIcroSystems Engineering Centre, School of Engineering & Physical Sciences, Heriot-Watt University, Edinburgh, Scotland, United Kingdom
Intense research has been carried out into methods that aim at harvesting fetal cells from maternal blood as substitutes to amniocentesis and chorionic villus sampling. This work focuses on the separation of fetal nucleated red blood cells from the maternal circulation based on their intrinsic magnetic properties. The design and simulation of a magnetophoretic separator is described, as it will ...
Numerical Modeling of Resistance Welding Process in Joining of Thermoplastic Composite Materials Using COMSOL Multiphysics®
R. Carbone and A. Langella
Material and Production Engineering Department, Università degli Studi di Napoli Federico II, Napoli, Italy
This paper deals of a technology involved in the joining of thermoplastic composites, the resistance welding technology. This process takes advantage in the repeatable melting process for the thermoplastic resins. The process was numerically modeled to study the effect of the two main process parameters, the electric power density applied to the heating elements and the exposure time at the ...