J. Caire, A. Bouh, and E. Guilminot
LEPMI, UMR 5631, INPG - CNRS, Saint Martin d’Hères, France
EPCC, Arc'Antique, Nantes, France
Restoration of archaeological materials from oceans is a major activity of Arc’ Antique. Organic materials such as wood, tissues, leathers, papers and ceramics found in sea water are always impregnated with salts. Rinsing such archaeological objects with pure water to extract the salts takes too long, so electrophoresis was used to improve the salt extraction. The objective of this ...
Modeling Dispersal of Genetic Information in Structured Agricultural Landscapes with Partial Differential Equations
K. Lipsius, and O. Richter
Institute of Geoecology, TU Braunschweig, Germany
We present a model for plant dispersal in agricultural landscapes to evaluate the gene dispersal from genetically modified (GM) plants. Dispersal from seed and pollen is modeled with partial differential equations. In scenarios, we investigated the effect of roadside application of non-selective herbicides on dispersal of herbicide tolerant oilseed rape (HT OSR). We showed that OSR growing on ...
Electric Field Distributions and Energy Transfer in Waveguide-Based Axial-Type Microwave Plasma Source
H. Nowakowska, M. Jasínski, and J. Mizeraczyk[1,2]
The Szewalski Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Gdansk, Poland
Dept. of Marine Electronics, Gdynia Maritime University, Gdynia, Poland
In this paper, we examine changes of the electric field distributions in waveguide-based axial-type microwave plasma source (MPS) during tuning procedure. The distributions strongly depend on position of the movable short, so does the wave reflection coefficient of the incident wave. A method of determining tuning characteristics of the MPS consisting in treating the MPS as a two-port network, ...
V. Di Marcello, A. Cammi, and L. Luzzi
Department of Energy, Nuclear Engineering Division (CeSNEF), Politecnico di Milano, Milano, Italy
This paper presents a preliminary analysis of the coupled thermo-hydrodynamics and neutronics of circulating nuclear fuel systems in a nuclear reactor that adopts a molten salt mixture. This flows up through channels in a graphite moderated core and plays the role of both heat generator and coolant. A strongly coupled system is needed since the velocity pattern is affected by the neutron ...
Numerical Analysis of the Impact of Geometric Shape Patterns on the Performance of Miniaturized Chromatography Systems
R. Winz, E. von Lieres, and W. Wiechert
Department of Simulation, University of Siegen, Siegen, Germany
Institute of Biotechnology, Research Centre Jülich, Siegen, Germany
We have implemented a two dimensional chromatography model for the analysis and optimization of structured micro pillar arrays. Dynamic surface interaction of solved molecules is taken into account by the kinetic Langmuir model. Variations of the pillar array geometry lead to deviations in the outlet concentration profiles. These deviations cannot be described by the one dimensional models that ...
J. Perko, D. Mallants, E. Vermariën, and W. Cool
Belgian Nuclear Research Centre (SCK-CEN), Mol, Belgium
Belgian Agency for Radioactive Waste and Enriched Fissile Material (ONDRAF/NIRAS), Mol, Belgium
Mass transport modelling through porous media is typically characterized by complex physics and geometry. In the particular case of radionuclide transport, modelling for radioactive waste repositories, an additional level of complexity, and thus uncertainty, originates from the long time frames involved. Performing a safety analysis of a radioactive waste disposal system requires therefore ...
M. Di Bari, and G. Zito
University of Bari, Italy
Many theoretical studies concerning lava tubes focus on the thermal disturbances generated on the earth surface. Recently a solution was suggested, where a lava tube located at a great depth h in the soil, where the ratio between h to the major axis of the ellipse a is higher than 10. However, lava tubes more frequently are located at shallower depths. In this work we ...
S. Barth, and S. Zimmermann
Drägerwerk AG & Co. KGaA, Lübeck, Germany
Ion mobility spectrometry provides fast detection of very low concentrations of chemical substances. Simple instrumentation combined with high sensitivity and high selectivity are the advantages of this technique. One well established field of application is the detection of hazardous compounds in air, such as chemical warfare agents, explosives and pollutants. A numerical model based on finite ...
Interfacing Continuum and Discrete Methods: Convective Diffusion of Microparticles and Chemical Species in Microsystems
CEA-LETI, Department of Biotechnology, Grenoble, France
Convective transport of macromolecules or micro and nanoparticles in microsystems are usually predicted by solving the Navier Stokes equations for the carrier fluid and a concentration equation for the diffusing species. In the case of isolated particles or complicated geometries with extremely small apertures or microporous material, the concentration equation maybe replaced by a Monte Carlo ...
D. Wenger, W. Polifke, and E. Schmidt-Ihn
Wenger Engineering GmbH, Ulm, Germany
Technical University of Munich, Munich, Germany
Daimler AG, Kirchheim/Teck, Germany
Metal hydrides are a widely-used method for storing and releasing hydrogen chemically under moderate conditions. This paper will present how highly dynamic metal hydride storage has been simulated and optimized using COMSOL Multiphysics. It will be shown how mass, energy and momentum balances were implemented and what boundary conditions were set to resolve various scenarios. The result of the ...