Battaglia, J.L., Rozot, J.M.
The fatigue is the most important criterion for the securities parts (brake system for example). The increasing use of shaped cast aluminium in the security automotive parts has focused interest on the fatigue of theses alloys. The specific foundry software use empirical laws that do not fit with the reality, above all concerning the aluminium alloys. We proposed a new physical parsimonious ...
University Paris 13 - Math. dpt.
This note is devoted to a domain decomposition method solving the Helmholtz equation in the frequency domain. We need to perform this global computation as a sequence of local computations, each computation being performed on a single subdomain, without any knowledge of the geometry and meshing of the other subdomains. This is useful when the global geometry is too big to be stored in a single ...
McKenna, J.R.1, Blackwell, D.D.2
1 U.S. Army Engineer Research & Development Center, Geotechnical & Structures Laboratory, Vicksburg, Mississippi
2 Department of Geological Sciences, Southern Methodist University, Dallas, Texas
Thermal anomalies indicating elevated temperatures often are present in producing hydrocarbon fields. This paper discusses precision temperature logs obtained over a salt dome in the Bayou Bleu hydrocarbon field in southwest Lousiana, and presents a 3-D thermal-fluid model of the dome constrained by these types of logs. The numerical model in which both an enhanced thermal conductivity ...
Narovlyansky, M.1, Squires, T.M.2, Whitesides, G.M.1
1 Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, U.S.A.
2 Departments of Physics and Applied Mathematics, Caltech, Pasadena, CA
In electrokinetic separations, the narrower and more homogeneous the initial sample plug, the higher the ultimate resolution of the separation. Here we describe a general and versatile method to sculpt low-dispersion, high-fidelity sample zones in microfluidic devices for high resolution electrokinetic separations. In a simple channel intersections microfabricated partitions act to reduce each ...
Ogur, E.O., Goodship, V., Smith, G.F.
University of Warwick
Magnetic fields play a crucial role in materials science and they have been used extensively in the study of materials where they tend to alter the dynamics of charged particles. The purpose of this paper is to investigate the effect of an external magnetic field generated from a permanent magnet and its interaction, during the injection moulding, with polymer containing ferromagnetic nickel ...
DiCarlo, A.1, Naili, S.2, Quiligotti, S., Teresi, L.1
1 Università "Roma Tre"
2 Université Paris XII–Val-de-Marne
Growth (change of relaxed lengths) and remodeling (change of mechanical properties) are both involved in the morphogenesis of biological tissues. To model them is of paramount import for progressing both in scientific understanding and health technologies. We model bone tissue as a microstructured continuum, whose mechanical properties at the macroscopic scale are described by a linear, ...
Modeling of Thermal Microbial Destruction of Dried Powder Related to Properties Evolution and Granulometry
Ferret, E., Fine, F., Gervais, P.
Laboratoire de Génie des Procédés Alimentaires et Biotechnologiques, Dijon, France
Yeast cells of Saccharomyces cerevisiae were homogeneously incorporated to dried wheat flour particles, and then thermally treated in a new HTST (High Temperature Short Time) process for powders decontamination developed by our laboratory. A thermal modeling of spherical particles during treatment was developed with FEMLAB, taking into account thermal properties of each component and their ...
Effects of plasma rotation and magnetic fields on convection flows in the horizontal burning high intensity discharge lamps
OSRAM SYLVANIA, Beverly, MA, USA
Convection is critical in shaping the plasma temperature profiles, species segregation, arctube temperature distributions, plasma stability and a whole range of phenomena of importance to the high intensity discharge (HID) lamp performance and maintenance. A 2D local thermodynamic equilibrium (LTE) arc plasma model is developed using FEMLAB. The model can be described by the energy balance ...
El-Khatib, N.1, Huc, N.2, Goldberg, Y.3, Cedex Martiel, J.L.1
1 TIMC Laboratory, UMR CNRS 5525, Faculty of Medicine, La Tronche
2 COMSOL, Grenoble
3 INSERM EMI 01-08, Grenoble University Hospital, Grenoble
We present a simplified model of biological cells including a first layer, corresponding to the membrane and the actin cortex and a second one, representing the cell cytoplasm. The membraneactin ensemble is governed by the Navier equations while the cytoplasm is assimilated to a viscous fluid, described by the Navier-Stokes system. At the inner boundary, between the cortex and the cytoplasm, ...
A Computational Investigation of Flow - Mechanical Energy Loss: Relevance to the Total Cavopulmonary Connection
Wiesman, J.P.1, Hamlington, K.L.1, Gaver, D.P.1, Ross-Ascuitto, N.T.2, Ascuitto, R.J.2
1 Tulane University, Department of Biomedical Engineering
2 Tulane University, Department of Pediatrics and Physics
The “Total Cavopulmonary Connection (TCPC)”, or Fontan operation, has become the surgical treatment of choice for children with functional single-ventricle heart disease. We assessed fluid energetics relevant to TCPCs using the computational fluid-dynamics package FEMLAB 3.1 (COMSOL, Inc., Burlington, MA) to describe non-pulsatile flow through a conduit, taken to represent an obstructed ...