An Innovative Reactive Transport Modeling Approach for the Chemical Evolution of a HLW Cell in the Callovo-Oxfordian Formation
J. Molinero, D. García, M. Grivé, A. Nardi
Amphos 21 Consulting, Barcelona, Spain
Andra (The French National Radioactive Waste Management Agency) envisages the safe disposal of High-Level Waste (HLW) and Intermediate-Level Long-Lived Waste (IL-LLW) in deep geological storage using a multi-barrier system. To ensure the containment of radioactivity, the principle of storage is based on a clay formation with low permeability, homogeneity and continuity (i.e Callovo-Oxfordian ...
G. Ha, S. S. Kim, J. H. Kim
Chungnam National University, Daejeon, Korea
Here we aim to advance geomagnetic modeling approaches using COMSOL Multiphysics® software and improve the degree of detail that can be obtained from the measured magnetic field. First, we carried out benchmark tests by comparing the computed results using the widely used analytic solutions for rectangular bodies with arbitrary direction of magnetization with those from the AC/DC Module of ...
M. Belferman , R. Katsman , A. Agnon , Z. Ben-Avraham ,
 The Dr. Moses Strauss Department of Marine Geosciences, Leon H.Charney School of marine sciences. Haifa University, Mt. Carmel, Haifa, Israel
 Institute of Earth Sciences, The Hebrew University, Jerusalem, Israel
The Levant has been repeatedly devastated by numerous earthquakes since prehistorical times. In order to understand the role of the dynamics of the water bodies in triggering the deformations in the Levant basin, a new theoretical thermo-mechanical model is constructed and extended by including a fluid flow component, in COMSOL Multiphysics simulation environment. The latter is modeled on a ...
L. Meacci, A. Farina, F. Rosso, I. Borsi, M. Ceseri, and A. Speranza
Dipartimento di Matematica U. Dini, Università degli Studi di Firenze, Firenze, Italy
The problem is to understand how a geothermal field can evolve from a water dominated state into a vapor dominated one. A first answer to this question is given by a simplified mathematical model of the dynamics of a geothermal field in which the geothermal fluid is entirely composed by pure H2O. We considered a 1-D geometry and we developed a dynamic model that presents a clear interface ...
J. Park, T. Bjornara, H. Westerdahl, and E. Gonzalez
Norwegian Geotechnical Institute (NGI), Oslo, Norway
StatoilHydro Research Center, Norway
In this study, we propose an absorbing boundary domain (or condition), which is really simple but still efficient for the 2.5D finite element (FE) analysis. The main application is to simulate the electromagnetic (EM) waves related to the marine controlled source electromagnetic (CSEM) method, where the EM wave propagates with extremely low frequency in the conductive media. In the near future, ...
J. Rodríguez-González, A.M. Negredo, P. Petricca, and E. Carminati
Departamento de Geofísica y Meteorología, Facultad de CC. Físicas, Universidad Complutense de Madrid, Madrid, Spain
Dipartimento di Scienze della Terra, Università di Roma La Sapienza, Roma, Italy
Istituto Geologia Ambientale e Geoingegneria – CNR, Roma, Italy
Subduction processes have great importance as are related to volcanism and earthquake occurrence. Old and cold plates should subduct steeper than younger ones, but the subduction angle is highly variable and does not always correlate with the age of the plates. Some researchers propose a global or net westward drift of the lithosphere relative to the mantle and this assessment is still a matter ...
H. Ishimori, K. Endo, H. Sakanakura, M. Yamada, M. Osako
Ritsumeikan University, Kusatsu, Shiga, Japan
National Institute for Environmental Studies, Tsukuba, Ibaraki Prefecture, Japan
This paper presents the numerical simulation model for radiocesium leaching and transporting behavior in municipal solid waste (MSW) landfill and discusses on the design for the required geometry and properties of the impermeable final cover and the soil sorption layer, which work for containment of hazardous waste such as radiocesium-contaminated MSW generated by Fukushima Daiichi nuclear ...
E. Zanchini, and T. Terlizzese
Dipartimento di Ingegneria Energetica, Nucleare e del Controllo Ambientale, Università di Bologna, Bologna, Italy
The results of two thermal response tests recently performed on two vertical borehole heat exchangers (BHEs) are presented. The BHEs have the same cross section and a depth of 100 m and 120 m respectively. The evaluation of the thermal properties of the ground and grout are performed by a finite-element simulation method, developed through the software package COMSOL Multiphysics 3.4.
VTT, Technical Research Centre of Finland, Espoo, Finland
Radionuclide transport modeling is a part of the research concerning geological disposal of spent nuclear fuel. Typically, the transport models near a single deposition hole focus on the reactions of nuclides, while the model geometry and the flow of groundwater are often simplified. In this paper, instead, a radionuclide transport model in a detailed 3D geometry with no reactions is introduced. ...
M. Ding, J. Lin
MIT/WHOI Joint Program in Oceanography, Cambridge, MA, USA
Woods Hole Oceanographic Institution, Woods Hole, MA, USA
We used COMSOL Multiphysics 4.3 to simulate the 2D elastoplastic deformation and plastic strain in a wedge-shaped plate above a subducting interface. The modeling results reveal that a pair of conjugate normal faults would first appear in the thinner part of the plate. Subsequently, a second pair of conjugate thrust faults would form in the thicker part of the plate. The duration of the seamount ...