O. Silva, M. Pekala, D. Garcia, J. Molinero, A. Nardi, M. Grive, B. Cochepin
Amphos 21 Consulting, Barcelona, Spain
Agence Nationale pour la Gestion des Dechéts Radioactifs, Châtenay-Malabry Cedex, France
The French National Waste Management Agency (Andra) envisages the safe disposal of High-Level Waste Intermediate-Level Long-Lived Waste through deep geological storage (multibarrier). Waste storage is based on the Callovo-Oxfordian formation (CallOx). It has been updated a reactive transport model accounting for the chemical and thermal evolution of a HLW cell. Improvements are a better ...
Simulation of the Convective Heat Transfer and Working Temperature Field of a Photovoltaic Module Using COMSOL Multiphysics®
E. Ruiz-Reina and M. Sidrach-de-Cardona
Departamento de Física Aplicada II, Universidad de Málaga, Málaga, Spain
The aim of this work is the Finite Element Analysis (FEA), by using COMSOL Multiphysics®, of the convective heat transfer and working temperature field of a photovoltaic module under different wind conditions.
G. Jovonavic, J. Jones, and A. Yokochi
School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon, USA
This paper describes the benefits of computational fluid dynamics in the development of a microreactor used in the desulfurization of aromatic compounds. It is crucial to verify diffusion and extinction coefficients to ensure accurate simulation results prior to experiments. COMSOL Multiphysics was used to model the behavior of all of the possible species present and reactions that may occur.
N. Pacheco, D. Pavone, K. Surla, E. Schaer, and J. Houzelot
For Hydrogen production purpose from bio-ethanol, IFP set up a pilot reactor that can work at high temperature (1000°C) and high pressure (20 bar). Experiments show that this reactor has a specific thermal behavior that should be modeled in addition to chemical and hydrodynamics to understand and optimize hydrogen production. The multiphysics simulator has been defined in COMSOL and the ...
D. Hu, F. Zhang, H. Zhou, and J. Shao
LML, UMR8107, CNRS, University of Lille I, Lille, France
School of Civil Engineering and Architecture, Hubei University of Technology, Wuhan, China
State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, China
A lixiviation-mechanical coupled model is developed for fiber reinforced concrete within this framework; both the influence of chemical degradation on short and long term mechanical behavior and the influence of mechanical loading on the diffusion coefficient can be considered. The elastic mechanical properties are written as function of chemical damage. A Drucker–Prager typed criterion with ...
C. Wylock, S. Goffin, M. Aubinet, B. Longdoz, B. Haut
Université Libre de Bruxelles (ULB), Transfers, Interfaces and Processes (TIPs), Brussels, Belgium
University of Liège-Gembloux Agro-Bio Tech, Unit of Biosystem Physics, Gembloux, Belgium
INRA, Centre INRA de Nancy, UMR1137 Ecologie et Ecophysiologie Forestières, Champenoux, France
The assessment of forest soil respiration and its isotopic composition is one of the important issues for the carbon cycling modeling (greenhouse gas emission control) because it is often inaccurate. Soil respiration is a complex process, depending on the coupling of several phenomena, which is therefore highly sensitive to any disturbance. In this work, the dynamics of the transport of two ...
C. F. Gomez, R. Schunk, R. F. Coker, J. Knox
NASA Marshall Space Flight Center, Huntsville, AL, USA
The objective of this simulation effort is to develop a mathematical model of vacuum desorption on a POC (Proof of Concept) canister loaded with Zeolite 13X/5A . This canister contains a pelletized adsorption bed which is used to adsorb H2O and CO2. Once this bed is fully saturated with an equilibrium loading, desorption is then accomplished by reducing the pressure to near vacuum. This type of ...
P. Buttin, B. Malki, P. Barberis, and B. Baroux
SIMAP/groupe SIR, CNRS, France
AREVA - AREVA NP - CEZUS Research Center, France
This paper studies multicomponent transport through zirconia, assuming a chemical reaction involving electrons and oxygen vacancies defects. Classically, according to the Wagner theory for ambipolar diffusion, the electroneutrality condition in the oxide is considered. Therefore three constraints must be satisfied on the transport problem: oxide stoichiometry, electroneutrality and the source ...
R. Cumeras, I. Gràcia, E. Figueras, L. Fonseca, J. Santander, M. Salleras, C. Calaza, N. Sabaté, and C. Cané
Instituto de Microelectrónica de Barcelona, Barcelona, Spain
A micro Planar Ion Mobility Spectrometer (P-FAIMS) has been simulated using multiphysics software. In P-FAIMS target ions are discriminated by the application of the proper separation voltages to the electrodes of the system. Modelling of vapour phase ions of two compounds have been studied for different values of electric field amplitude to gas number density (E/N) ratio: a health risky volatile ...
Simulations of Heat and Mass Transport During Biomass Conversion Processes Using 3D Biomass Particle Models with Realistic Morphology and Resolved Microstructure - new
P. Ciesielski, M. Crowley, L. Thompson, B. Donohoe, D. Robichaud, A. Sanders, M. Nimlos, T. Foust
Biosciences Center, National Renewable Energy Laboratory, Golden, CO, USA
National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO, USA
Quantum Electronics & Photonics Division, National Institute of Standards & Technology, Boulder, CO, USA
Predictive simulations of biomass conversion processes will improve their technical performance and reduce economic uncertainty surrounding industrialization of biofuels production. The majority of present conversion simulations treat the biomass feedstock with simplifying assumptions that neglect important characteristics that are unique to biomass particles. These characteristics, including ...