D. Scandura, G. Currenti, and C. Del Negro
Istituto Nazionale di Geofisica e Vulcanologia Sezione di Catania, Catania, Italy
In volcanic areas, the presence of heterogeneous materials and high temperatures affect the rheological behaviour of the Earth's crust that calls for considering the anelastic properties of the medium surrounding the magmatic sources. A thermo-mechanical numerical model is performed for evaluating the temperature dependency of the elasto-plastic solution. Both temperature distributions and ...
Xiang Sun , Hao Luo , Xiaoxia Guo , Yuelang Jin , Tingting Luo 
 Dalian University of Technology, Dalian, China
 University of Cambridge, Cambridge, UK
 Tongji University, Shanghai, China
Many numerical coupling thermo-hydro-mechanical-chemical models for methane hydrate bearing sediments(MHBS) have been proposed to analyze the mechanical behavior of MHBS during methane gas production. However, most of them are based on finite differential method (FDM) or finite volume method (FVM). Few models for MHBS based on finite element method (FEM) and Galerkin variation principle are ...
Modelling of Transport Phenomena and Effect of Applied Electrical Field on Heavy Metals Recovery during Application of the Electro-remediation Process
A. Mahmoud, and J. Beaugrand
Laboratoire de Thermique Energétique et Procédés, ENSGTI, Pau, France
A mathematical model for the simulation of contaminant such as heavy metals removal from soils by electric fields was performed in a 2-D geometry using COMSOL Multiphysics. Electrokinetic phenomena is the result of the coupling between hydraulic and electrical potential gradients in fine grained soils. The model describes the coupled transport of mass and charge of species subjected to an ...
M. H. Akanda , Y. Cao , A. J. Meir ,
 Department of Mathematics & Statistics, Auburn University, Auburn, AL, USA
Poroelasticity equations describe the interaction between fluid flow and solids deformation within a porous medium. Modeling of poroelasticity is coupling between elastic deformation of porous materials and Darcy’s law. Poroelasticity has numerous real world applications such as in reservoir engineering, bio-engineering, environmental engineering etc. We have used quasi-static poroelastic ...
Variation of the Frost Boundary below Road and Railway Embankments in Permafrost Regions in Response to Solar Irradiation and Winds
N.I. Kömle and W. Feng
Space Research Institute, Austrian Academy of Sciences, Graz, Austria
State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Lanzhou, China
We present COMSOL solutions for a coupled gas flow and heat transfer problem, which occurs particularly when traffic pathways are constructed in high altitude and arctic regions, where the underground is frozen soil. To avoid melting of the frozen ground (which usually leads to mechanical instability) one has to find suitable measures to keep the subsurface soil and the embankment suitably cool. ...
Coupling Hydrodynamics and Geophysics with COMSOL Multiphysics: First Approach and Application to Leachate Injection in Municipal Waste Landfills
C. Duquennoi, S. Weisse, R. Clement, and L. Oxarango
Cemagref, HBAN research unit, Antony, France
LTHE, Grenoble, France
The efficiency of bioreactor lanfills depends on a homogeneous distribution of leachate in the waste body. Therefore, optimisation of leachate injection systems is a challenging issue for operators. Most studies have shown that surface Electrical Resistivity Tomography (ERT) can be a suitable method to study moisture distribution (2D and 3D). But resistivity inversion models used to date are ...
COMSOL Multiphysics, TOUGHREACT and Numerrin Comparison in Some Modelling Tasks of Spent Nuclear Fuel Disposal
A. Itälä, V-M. Pulkkanen, M. Laitinen, M. Tanhua-Tyrkkö, and M. Olin
VTT Technical Research Centre of Finland, Espoo, Finland
Numerola Oy, Jyväskylä, Finland
Bentonite clay is used as a protecting barrier around both the copper capsules in deposition holes and in deposition tunnels in the KBS-3 final disposal concept for spent nuclear fuel. The performance of these bentonite barriers will be investigated both experimentally and by modelling. Both approaches are needed, because for example the time span in question (hundred thousand years or even ...
O. Punkkinen, A. Jorma, K. Kari, and M. Olin
B+Tech, Helsinki, Finland
Posiva, Eurajoki, Finland
VTT, Espoo, Finland
In this work the issue of saturation phase erosion caused by groundwater leakages was approached both experimentally and computationally by employing COMSOL\'s Earth Science Module. We evaluated the total mass of eroded bentonite out of a cylindrical erosion channel both numerically and experimentally, and studied its dependence on time. It was observed that logarithmic eroded mass loss as a ...
D. Rizzello, P. Canepa, E. Armadillo
DISTAV - University of Genova, Genova, Italy
Topographic effects on magnetotelluric responses may be severe on rugged terrains. Finite elements simulation is a valuable tool to quantify this effect, due to its capability to match real morphologies. To do the estimate of the distortion, the AC/DC Module of COMSOL has been employed, using a model of homogeneous resistivity on which a DEM (Digital Elevation Model) profile of the Deep Freeze ...
S. Cambon, I. Bogdanov
CHLOE, Bâtiment UFR Sciences et Techniques, Pau Cedex, France
Non-conventional hydrocarbon resources become more and more challenging object for energy producing companies throughout the world. Being already known and long-explored method, the electromagnetically (EM) assisted recovery constitutes a promising idea of technology for deposits of such a kind. COMSOL has been used recently for modeling the thermal multiphase flow through porous media in the ...