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Suchbegriff:

Shape Optimization of Electric and Magnetic System using Level Set Technique and Sensitivity Analysis

Y. Sun Kim, A. Weddemann, J. Jadidian, S. Khushrushahi, and M. Zahn
Dept. of Electrical Engineering and Computer Science
MIT
Cambridge, MA

The classical optimization method has been applied to many design problems for electromagnetic systems. One of its major difficulties is related to meshing problems arising from shape modifications. In order to circumvent these kinds of technical difficulties with moving mesh problems, ... Mehr lesen

The Analysis of the Conditions of Flow in the Tundish Performed by a Numerical and Physical Method

T. Merder [1], J. Jowsa [2], A. M. Hutny [2], J. Pieprzyca [1], M. Warzecha [2],
[1] Silesian University of Technology, Katowice, Poland
[2] Czestochowa University of Technology, Czestochowa, Poland

Studies of the liquid metal movement (hydrodynamic) in a real object (tundish) are substantially precluded due to the objective difficulties (high temperature and the size of metallurgical equipment), compared to their execution by the use of physical and numerical modeling. In presented ... Mehr lesen

Numerical Modeling and Performance Optimization Study of a Dehumidification Process in Nuclear Waste Storage

P. Geraldini[1]
[1]Sogin Spa, Rome, Italy

One of the main parameters to consider during the nuclear waste storage design phase is the drum corrosion risk. The humid-air corrosion models available in literature predict that, for carbon steel, the phenomena start to become appreciable for relative humidity (RH) values close to ... Mehr lesen

Numerical Investigation of Non-Newtonian Laminar Flow in a Curved Tube with Insert

A. Kadyyrov[1]
[1]Research Center for Power Engineering Problems, KSC, RAS, Russia

Non-Newtonian laminar flows in curved circular tubes with inserts are investigated by computer simulations. 0.65% solution of NaCMC is considered. Three-dimensional incompressible Navier-Stokes equations are solved using COMSOL Multiphysics. Placements of inserts inside the curved tubes ... Mehr lesen

Simulating A Fan For Industrial Ventilation

G. Argentini
Riello Burners, Italy

This work talks on simulation of a ventilating structure for an industrial burner. The mathematical model is based on the frozen-rotor technique, and the numerical simulation is used for resolution of fluid dynamics equations for the air flow into the rotating wheel and into the static ... Mehr lesen

Simplified Numerical Model of an Axial Impeller

A.-M. Georgescu[1], S.-C. Georgescu[2]
[1]Hydraulics and Environmental Protection Department, Technical University of Civil Engineering, Bucharest, Romania
[2]Hydraulics Department, University “Politehnica”, Bucharest, Romania

We propose a simplified numerical method to model the flow field downstream of an axial impeller. The method can be used for any axial hydraulic machinery for which, one is less interested by the flow between the blades, than by the flow field downstream of the machinery. The method is ... Mehr lesen

Fluid Dynamics Modeling of an Industrial Wet Chemical Process Bath for the Si-Solar Cell Production

L. Mohr [1], M. Zimmer [1], A. Moldovan [1], M. Menschick [2], B. Mandlmeier [2],
[1] Fraunhofer Institut for Solar Energy Systems ISE, Freiburg, Germany
[2] Singulus Technology AG, Fürstenfeldbruck, Germany

Silicon solar cells are produced in a series of different process steps in which wet-chemical etching and rinsing steps have a considerable influence on the quality of the wafers. Etching baths are used for surface structuring or intended etch back. Examples therefore are texturing, ... Mehr lesen

Simulation of Surface Chemical Reactions in a Monolith Channel for Hydrogen Production

N. Pacheco[1], D. Pavone[1], K. Surla[1], J. Houzelot[2], and E. Schaer[2]
[1]IFP-Lyon, Solaize, France
[2]ENSIC, Solaize, France

This paper intends to show a model of a monolithic reactor for the autothermal reforming process (ATR), a process that uses hydrocarbons to produce H2. The ATR chemical reactions take place on the surface of monolith channels coated with a catalyst. The isothermal ATR reactor is modeled ... Mehr lesen

Modelling of a Wool Hydrolysis Reactor

M. Giansetti[1], A. Pezzin[1], S. Sicardi[1], G. Rovero[1]
[1]Politecnico di Torino, Torino, Italy

The Life+ GreenWoolF project is aimed at demonstrating that green hydrolysis with superheated water is an effective way to convert wool wastes into organic nitrogen fertilizers. The core of the process is represented by the reaction tank (Figure 1) in which the hydrolyses reaction takes ... Mehr lesen

Pseudo-3D Multiphysics Simulation of a Hydride Vapor Phase Epitaxy Reactor

M. Hackert-Oschätzchen[1], M. Penzel[1], P. Plänitz[2], A. Schubert[1][3]
[1]Chemnitz University of Technology, Chemnitz, Germany
[2]GWT-TUD, Dresden, Germany
[3]Fraunhofer Institute for Machine Tools and Forming Technology IWU, Chemnitz, Germany

Gallium nitride (GaN) and its related nitride alloys with special physical properties are in technical areas of high interest. The growing of gallium nitride boules on non-native sapphire or silicon carbide requires complicated mechanisms of defect reduction in the lattice structure. ... Mehr lesen

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