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Sehen Sie sich die COMSOL Conference 2018 Kollektion an

High-Temperature Sodium/Metal Chloride Storage Battery

M. Vallance[1], and R. White[2]
[1]General Electric Global Research Center, Niskayuna, NY, USA
[2]Department of Chemical Engineering, University of South Carolina, Columbia, SC, USA

Sodium/metal chloride storage batteries, used in hybrid propulsion applications, provide high energy and power densities safely and reliably. To understand the dynamics of electrochemical cycling, a high-temperature sodium/ferrous chloride storage cell was modeled in two dimensions. The ... Mehr lesen

FEM Simulation of the Scanning Electrochemical Potential Microscopy (SECPM)

R. Hamou, P. Biedermann, M. Rohwerder, and A. Blumeneau
Max-Planck-Institut für Eisenforschung GmbH, Düsseldorf, Germany

The present work focuses on modeling a new experimental technique: Scanning Electro-chemical Potential Microscopy (SECPM), which is used to probe the potential profile of the electric double layer (EDL). We used an electrostatic approach to compute the EDL potential measured within the ... Mehr lesen

Modeling and Characterization of Superconducting MEMS for Microwave Applications in Radioastronomy

N. Al Cheikh[1], P. Xavier[1], J. Duchamp[1], and K. Schuster[2]
[1]Institute of Microelectronics, Electromagnetism and Photonics (IMEP-LAHC), Grenoble, France
[2]Institute of Millimetrics Radio Astronomy (IRAM), Grenoble, France

Superconducting GHz electronics circuits are frequently used in Radio Astronomy instrumentation. The features of these instrumentations can be significantly improved by using tuneable capacitances, which can be realized by electrically actuated, micromechanical bridges (MEMS) made of ... Mehr lesen

Designing the Actuator for the Next-Generation Astronomical Deformable Mirrors: a Multidisciplinary and Multiphysics Approach

C. Del Vecchio[1], R. Biasi[2] , D. Gallieni[3], and A. Riccardi[1]

[1]INAF-OAA, Fierenze, Italy
[2]Microgate Srl, Bolzano, Italy
[3]ADS International Srl, Valmadrera, Italy

The actuation system of the deformable mirror is one of the crucial components of an Adaptive Optics unit. One possible implementation comprehends a linear force motor and a capacitive sensor providing the feedback measure signal. Choosing a magnetic circuit that makes optimum use of the ... Mehr lesen

Multi-Scale Modelling of Catalytic Microreactors

B. Hari[1] and C. Theodoropoulos[1]
[1]The University of Manchester, School of Chemical Engineering and Analytical Science, Manchester, UK

Microreactors are important alternative to conventional reactors in chemistry, chemical, pharmaceutical and semiconductor industries due to their operation characteristics such as increased mass and heat transfer, uniform flow, safety, high throughput through array configurations, ... Mehr lesen

The Optical Properties of a Truncated Spherical Cavity Embedded in Gold

A. Pors[1], O. Albrektsen[2], S.I. Bozhevolnyi[2], and M. Willatzen[1]
[1]Mads Clausen Institute, University of Southern Denmark, Sønderborg, Denmark
[2]Institute of Sensors, Signals and Electrotechnics, University of Southern Denmark, Odense, Denmark

The use of plasmonic effects to dramatically enhance the electromagnetic field near the surface of a metallic nanostructured surface has grown into a large research area in the effort to take advantage of the surface enhanced field. In this paper the electromagnetic field near a nano ... Mehr lesen

Negative Ion Beams and Secondary Beams

M. Cavenago[1], P. Veltri[2], E. Gazza[2], G. Serianni[2], and P. Agostinetti[2]
[1]INFN-LNL, Legnaro, Padova, Italy
[2]Consorzio RFX, Padova, Italy

The development of powerful negative ion sources requires precise and versatile simulation tools to predict the emittance of the extracted ion beams and the heat load on the electrodes. A first tool is a determination of the plasma beam interface which is accomplished by a set of macro ... Mehr lesen

Modelling and Experimental Validation Possibilities of Heat Transfer Room Model

M. Zalesak, and V. Gerlich
Tomas Bata University in Zlin, Zlin, Czech Republic

The study presents first authors experience with COMSOL Multiphysics environment used as a possible modeling tool of thermal building behavior. The idea of the project was to gain thermal response to changed boundary conditions with the application of COMSOL environment as a modeling ... Mehr lesen

Modeling of Transport Phenomena during Hydrogen Uptake in an Alanate Storage System Equipped With Metallic Honeycomb Heat Exchanger

M. Bhouri[1], J. Goyette[1], B.J. Hardy[2], and D.L. Anton[2]
[1]Hydrogen Research Institute, Université du Québec à Trois-Rivières, Trois-Rivières, QC, Canada
[2]Savannah River National Laboratory, Aiken, SC, USA

In this paper, a metallic honeycomb structure is used as a heat exchanger in order to improve the hydrogen refuelling time for an alanate storage system. Using COMSOL software, the heat exchanger structure and the hydride bed are modeled as a two separate media and the governing ... Mehr lesen

A Study of Distributed Feed-Back Fiber Laser Sensor for Aeronautical Applications Using COMSOL Multiphysics

I. Lancranjan[1], C. Gavrila[2], S. Miclos[3], and D. Savastru[3]
[1]Advanced Study Centre - National Institute for Aerospace Research Elie Carafoli, Bucharest, Romania
[2]Technical University of Civil Engineering Bucharest, Romania
[3]National Institute R&D of Optoelectronics, INOE 2000, Bucharest, Romania

Distributed Feedback Fiber Laser (DFB-FL) sensors are increasingly used in aeronautical applications. One of the newest such applications consists in detecting the “transition” zone between laminar and turbulent air flow upon the extrados surface of an aircraft wing. In this specific ... Mehr lesen