S. Qidwai, N. Kota, V. DeGiorgi
Naval Research Laboratory, Washington, DC, USA
Science Applications International Corporation, Washington, DC, USA
Pitting corrosion is a complex phenomenon where rates of: i) chemical reactions, ii) diffusion of various species involve in those reactions, and iii) species dissolution at the metal-electrolyte interface are fully dependent on each other, except under special conditions or assumptions. One set of such conditions is that: a) there are no species concentration gradients due to the rapid mixing ...
A. Aman, R. Gentile, Y. Xu, N. Orlovskaya
Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, FL, USA
Fuel cells are devices that convert chemical energy of a fuel into electrical energy through electrochemical processes. One of the types of fuel cell is the Solid Oxide Fuel Cell (SOFC) that uses solid ceramics for electrolytes. Numerical simulation involves constructing a mathematical model of the SOFC and use of specifically designed software programs that allows the user to manipulate the ...
A.E. Idiart, M. Pekala, A. Nardi, D. Arcos
Amphos 21, Barcelona, Spain
The Swedish Organization for Radioactive Waste (SKB) is considering disposal High Level Wastes in a deep underground repository. Bentonite clay is planned to be used in the near-field of the waste packages as buffer material. The buffer is expected to provide a favorable environment with limited radionuclide migration due to slow diffusion and retardation by sorption and cation-exchange effects. ...
Development of Magnetic Field Components for the Polarisation Option of the Neutron Spectrometer FOCUS
L. Holitzner, U. Filges, J.P. Embs, T. Fennell, T. Panzner
Laboratory for Developments and Methods, Paul Scherrer Institut, Villigen, Switzerland
Laboratory for Neutron Scattering, Paul Scherrer Institut, Villigen, Switzerland
We show a new, favourable space-saving method to host a neutron polarizer in the iron-containing monochromator shielding of a time-of-flight spectrometer for cold neutrons. In this poster you can learn e.g., how to create a robust, homogeneous, rectangular magnetic field (here realized by permanent magnet queues inside an iron tube). The time-of-flight spectrometer FOCUS at the spallation ...
A. Mossadegh Pour, A. Dhira , R. Steinberger-Wilckensa
Department of Chemistry, University of Birmingham, Edgbaston, Birmingham, United Kingdom
Auxiliary Power Units can play an important role in reducing vehicle emissions, especially in diesel and kerosene driven vehicles. In conventional vehicles the electricity supply comes from a generator that is directly coupled to the propulsion engine. New generation of fuel cell APUs exclusively use Solid Oxide Fuel Cells with some developments in high temperature polymer electrolyte membranes ...
A. Jeremic, E. Khoshrowshahli
Electrical & Computer Engineering, McMaster University, Hamilton, ON, Canada
Biomedical Engineering, McMaster University, Hamilton, ON, Canada
Although cardiac arrest may be statistically insignificant event financial and more important emotional costs in such cases are quite devastating. In this paper we study the effects of multiple grounding pads. Namely, we believe that by placing multiple pads in the lower abdominal part we would be able to decrease the current density that would be dissipated to fetus and amniotic ...
R. Purkayastha, R. McMeeking
Cambridge University, Cambridge, UK
University of California, Santa Barbara, CA, USA
Due to computational considerations most models of lithium storage particles in batteries incorporate spherical particles. However most storage particles used in battery electrodes tend to be irregular in shape with sharp edges and extended aspect ratios. The change of the relative surface area to the volume of the particle can lead to a change in the stress response of the particle for the same ...
M. J. Hancock, N. H. Elabbasi, M. C. Demirel
Veryst Engineering, LLC, Needham, MA, USA
The Pennsylvania State University, University Park, PA, USA
Pumping liquids at small scales is challenging because of the principle of reversibility: in a viscous regime, the flow streamlines through a fixed geometry are the same regardless of flow direction. Recently we developed a class of microfluidic pump designs based on tilted flexible structures that combines the concepts of cilia (flexible elastic elements) and rectifiers (e.g., Tesla pump). We ...
E. Gutierrez-Miravete ,
 Rensselaer at Hartford, Hartford, CT, USA
Functionally graded composite materials are attracting interest among design engineers since structural component properties can be designed and customized into finished parts through processing. The controlled variable is the concentration of reinforcing particles at various points within the component. While locally isotropic, part properties can be made to vary in a controlled manner from ...
M. Cavenago, P. Antonini, P. Veltri, N. Pilan, V. Antoni, and G. Serianni
INFN-LNL, Legnaro, Padova, Italy
Consorzio RFX, Padova, Italy
Centro Ric. E. Fermi, Roma, Italy
A very simplified system for high voltage test is studied, considering reason for voltage holding failures which are not covered by conventional and local design criteria. A first understanding of the problem is obtained by solving the electrostatic potential in a 2D axis symmetric geometry, considering in detail the electrode shapes, and following a cascade of particle between opposite ...