Y. Beauregard, M. Gobian, and F. Garisto
University of Western Ontario, London, ON, Canada
Nuclear Waste Management Organization, Toronto, ON, Canada
In the Canadian concept for a deep geological repository for used nuclear fuel, the used fuel bundles are placed in containers consisting of an inner steel vessel surrounded by a copper shell. The filled containers are placed in excavated tunnels or boreholes and surrounded by a compacted bentonite clay buffer material. In the event of container failure, the rate of migration of radionuclides ...
J. Lippmann-Pipke, J. Kulenkampff, G. Marion, and M. Richter
Rossendorf, Institut of Radiochemistry
Research Site Leipzig
Reactive Transport Division
We apply COMSOL Multiphysics for reproducing our experimental observations of fluid flow and transport processes in geological media. Our experimental GeoEPT-method allows the 4D monitoring of transport processes in geological material on laboratory scale. Explicitly we import “realistic structures” from geologic samples scanned by means of computer tomography (CT) as stl-files into COMSOL ...
Assessment of Spatial Variably Saturated Flow by Irrigation Moisture Sensors in 2-Dimensions using the COMSOL Multiphysics 4.1
A. Boluwade, and C. A. Madramootoo
Bioresources Engineering, McGill University
Ste. Anne De Bellevue, QC
This paper reports on the application of COMSOL Multiphysics’ Richard\'s Equation Interface in the assessment of irrigation moisture sensors for detecting the level of water saturation in a spatial variably saturated soil. The Richard\'s Equation (in COMSOL) provides the interface which automates the van Genuchten equation. A hypothetical soil column 4m by 4m was set up with seven irrigation ...
Impact Assessment of Hydrologic and Operational Factors on the Efficiency of Managed Aquifer Recharge Scheme
M.A. Rahman, P. Oberdorfer, Y. Jin, M. Pervin, E. Holzbecher
Department of Applied Geology, Geoscience Center, University of Göttingen, Göttingen, Lower Saxony, Germany
Due to increased demands on groundwater accompanied by increased drawdowns (ca. 2-3 meters/year), technologies that use alternative water resources have been suggested for Dhaka City, Bangladesh. Preliminary studies show that managed aquifer recharge (MAR) would help in optimal use of available water resources and to reduce adverse effects of pumping in the Dupitila aquifer of the city. In this ...
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 ...
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 ...
A. Thoraval, Y. Guglielmi, F. Cappa
INERIS, Nancy, France
CEREGE, Aix-en-Provence, France
GEOAZUR, Valbonne, France
We have developed a numerical model to represent the effect of injection test in unsaturated porous and fractured rock mass. The test was conducted at the LSBB (Laboratoire Souterrain à Bas Bruit) site close to Rustrel, Vaucluse, France in the field of the French ANR project called “HPPP-CO2”. The results underline the impact of fractures on the hydro-mechanical response of the rock-mass. Indeed ...
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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, ...
Modeling of the Heat Transfer Between a CO2 Sequestration Well and the Surrounding Geological Formation
B. Sponagle, M. Amadu, D. Groulx, and M. Pegg
Mechanical Engineering, Dalhousie University, Halifax, NS, Canada
Process Engineering and Applied Science, Dalhousie University, Halifax, NS, Canada
In a carbon sequestration system CO2 would be pumped down a well and into a reservoir at supercritical temperatures and pressures. An important consideration is the long term stability of the reservoir. The goal of these simulations is to thermally model the injection well and investigate the temperature gradient developed in the cap rock. Ultimately, results from this study will lead to an ...