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 interfacial ...
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.
H.A. Ghali and H.A. Rahman
Electrical Engineering Department British University in Egypt “BUE”, El Sherouk City, Egypt
A teaching platform that could be used to help students understand concepts such as; flux linking and mutual inductance has been developed using the AC/DC Module of COMSOL Multiphysics®. This is achieved through the accurate determination of different magnetic flux density components within the proposed geometry. Furthermore, based on the structure configuration, students can use obtained ...
M. Guizzetti, V. Ferrari, D. Marioli, and T. Zawada
Dept. of Electronics for Automation, University of Brescia, Brescia, Italy
Meggitt, Ferroperm Piezoceramics A/S, Kvistgaard, Denmark
The conversion of mechanical energy from environmental vibrations into electrical energy is a key point for powering sensor nodes toward the development of autonomous sensor systems. Piezoelectric energy converters realized in a cantilever configuration are the most studied for this purpose. In order to improve the performances of the converter, the geometry has to be properly designed. In this ...
Dipartimento di Ingegneria Industriale, Università di Parma, Parma, Italy
Simulated Thermal Response Test (TRT) data are analyzed in order to evaluate the effect of the tridimensionality model’s feature in determining the proper value of the soil thermal conductivity and borehole thermal resistance. The 3D system’s simulation during the TRT is realized by adopting the finite element method. The comparison of the numerical results with the analytical ...
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. ...
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 ...
U. Bardi, C. Borri, A. Fossati, A. Lavacchi, and I. Perissi
Dipartimento di Chimica, Università degli Studi di Firenze, Sesto Fiorentino, FI, Italy
A Finite element model of plasma sprayed TBC’s was developed to estimate the stress induced by thermal cycling experiments. A heat transfer analysis was performed to evaluate the temperature distribution on the specimen during the cooling under an impinging air jet; temperature measurements performed with an infrared pyrometer on the cooled samples show good agreement with the evaluated ...
A. Genoese, A. Genoese, and G. Garcea
Dipartimento di Modellistica per l'Ingegneria, Università della Calabria, Arcavacata di Rende, CS, Italy
Saint-Venant general rod theory is used to calculate the elastic factors of a section through the numerical solution of a system of partial differential equations. The elastic properties so evaluated are used in a geometric nonlinear analysis of 3D beam structures with general cross-section to calculate some important quantities such as the stiffness matrix. Linear solutions, such as the ...
P. Bonfiglio and F. Pompoli
Materiacustica S.r.l., Ferrara, Italy
Engineering Department, University of Ferrara, Ferrara, Italy
The present work deals with a numerical investigation of resonating systems used for noise control applications. In literature one can find analytical models based on fluiddynamics concepts for evaluating losses occurring across the holes of the perforates. In the paper an acoustical formulation based on the equivalent dissipative fluid approach will be analyzed. It will be firstly applied to ...