Electric Resistance Welding Process in Tube Manufacturing: Comparison Between a Numerical Model and a Set of Plant Trials - new
C. Cincunegui, P. Marino, D. Tieppo, E. Martinez
Tenaris, Campana, Buenos Aires, Argentina
In welded tube manufacturing, the electric resistance welding (EW) process begins with a coiled plate of steel with appropriate thickness and width to conform the produced tube. The strip is pulled through a series of rollers that gradually cold conform it into a tubular shape. The edges of the cylindrical plate come together forming a V. The strip edges are heated with a high frequency power ...
S. Manoj, R. Giri, S. Selvakumar
Rajalakshmi Engineering College, Chennai, Tamil Nadu, India
Gaseous exhaust of different industries contains dust particles of different chemical precipitates that are harmful for the environment. Electrostatic Precipitators are very often used in industries like power plant to filter their gaseous exhaust and to prevent the atmosphere to being polluted. Electrostatic Precipitators are very efficient in dust particle collection from the flue gas. ...
R. Escarela-Perez, E.A. Gutierrez-Rodriguez, J.C. Olivares-Galvan, M.S. Esparza-González, and E. Campero-Littlewood
Departamento de Energia, Universidad Autonoma Metropolitana - Azcapotzalco, Mexico D.F., Mexico
Instituto Tecnologico de Aguscalientes, Aguascalientes, Mexico
This work is concerned with the study of the asymmetrical phenomenon observed in three-phase transformers during the standard short-circuit test. The purpose of our work is to see if the asymmetric measurements can be predicted with the use of 2D finite-element models. To this end, we use the AC/DC Module of COMSOL Multiphysics. A multi-port network impedance is then determined to explain the ...
3D Multiphysics Modeling of Bulk High-Temperature Superconductors for Use as Trapped Field Magnets - new
M. Ainslie, J. Zou, D. Hu, D. Cardwell
Department of Engineering, University of Cambridge, Cambridge, UK
The authors are currently investigating the use of bulk high temperature superconductors as trapped field magnets (TFMs) in order to increase the electrical and magnetic loading of an axial gap, trapped flux-type superconducting electric machine. In electric machines, the use of superconducting materials can lead to increases in efficiency, as well as power density, which results in reductions ...
H. Cabrera, D. A. Zanin, L. G. De Pietro, A. Vindigni, U. Ramsperger, D. Pescia
Laboratory for Solid State Physics, ETH Zürich, Zürich, Switzerland
In our recent experiments we are revisiting the topografiner technology for the imaging of surface topography with a resolution of a few nanometers. In these new technique called Near-Field Emission Scanning Electron Microscopy (NFESEM), low-energy electrons are emitted from a polycrystalline tungsten tip via electric-field assisted tunneling. In order to characterize and improve the ...
P. Hainke, D. Kappe, A. Hütten
Universität Bielefeld, Bielefeld, Germany
As the importance of nanoparticles is growing more and more, controlling and understanding the properties of nanoparticles became a focus of research. In this field Meyer at al.  are researching the GMR effect in granular gels to develop magnetoresistive sensors. The GMR in granular gels is simulated to investigate the physical processes in those systems. As soon as the models coincide with ...
H. Fuqua, G. Delory, I. de Pater, R. Grimm
University of California - Berkeley, Space Sciences Lab, Berkeley, CA, USA
University of California - Berkeley, Berkeley, CA, USA
Southwest Research Institute, Boulder, CO, USA
Electromagnetic sounding measurements utilize magnetic induction to constrain the interior geophysical properties of planetary bodies. Under some conditions, the Earth’s moon can be approximated by the response of a conducting sphere in a vacuum. Transient magnetic fields originating from the sun can interact directly with the moon, producing eddy currents that generate an induced magnetic ...
Numerical Simulation of Chamber Design for Pulsed Electric Fields Processing of Wet Olive Pomace - new
N. Varga, I. Perales, A. Portugal
ATEKNEA Solutions Hungary, Budapest, Hungary
ATEKNEA Solutions Catalonia, Barcelona, Spain
The application of pulsed electric fields (PEF) is well known in the food industry as an advanced technology for mass transfer improvement. A new potential adaptation area of PEF could be extracting a valuable antioxidant called polyphenol from wet olive pomace (WOP) which is a by-product of olive oil production. The modelling includes the PEF effects on the WOP which is flowing through a ...
B. Oetiker, B. Friedman, and H.E. Hall Jr.
Department of Physics, Sam Houston State University, Huntsville, Texas, USA
High-resolution imaging is useful in oil and gas exploration to identify producing fractures that can be in the millimeter thickness range. In principle, high-resolution imaging maybe achieved using “current injection” to measure the electrical conductivity of the formation. Two current injection devices are compared for possible use as Logging While Drilling (LWD)imaging: The ...
H. Arab, S. Memiaghe, C. Akyel
Ecole Polytechnique of Montreal, Montreal, QC, Canada
This paper deals with a numerical modelling technique based on finite elements method for computing magnetic field and current density distributions in high temperature Superconducting (HTS) tapes. The model is developed using the T-ῼ formulation for which the degree of freedom (DOF) and the CPU time decreased considerably in AC losses analysis, and it is also observe that T-ῼ formulation give ...