COMSOL Modeling of Groundwater Flow and Pollutant Transport in a Two-Dimensional Geometry with Heterogeneities
M. Gobbert, M. Whitmore, B. Peercy, M. Baker, and D. Trott
University of Maryland Baltimore County
The Delmarva Peninsula is located on the East Coast of the United States, between the Chesapeake Bay and Atlantic Ocean. Industrial farming in the Delmarva Peninsula leads to levels of nutrients nitrogen, which grossly exceed natural levels and greatly impair the health of the bay. The main source of water carrying excess nitrogen to streams is groundwater. We use the software package COMSOL ...
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. ...
I. I. Bogdanov, K. El Ganaoui, and A. M. Kamp
Centre Huile Lourde Ouvert et Expérimental (CHLOE), Pau, France
Multiphysics flexibility and computational performance of COMSOL gave us the idea to model SAGD (steam assisted gravity drainage), one of the popular thermal methods of oil recovery. The modeling is far from straightforward and requires solving a system of non-linear PDEs for thermal multiphase flow under conditions of thermodynamic (phase) equilibrium. This paper presents the main results of our ...
L.M. de Vries, A. Nardi, A.E. Idiart, P. Trinchero, J. Molinero, F. Vahlund, H. von Schenck
Amphos 21, Barcelona, Spain
Swedish Nuclear Fuel and Waste Management, Stockholm, Sweden
The Swedish Nuclear Fuel and Waste Management Co (SKB) is responsible for final disposal of spent fuel and radioactive waste. SKB operates SFR, an underground waste repository in crystalline rock. The evolution of groundwater flow within the repository needs to be estimated considering different options for the design of the engineered barriers. The goal is to predict the effects of flow and ...
E. Abarca, A. Idiart, O. Silva, L.M. de Vries, J. Molinero, F. Vahlund, H. von Schenck
Amphos21 Consulting, Barcelona, Spain
Swedish Nuclear Fuel and Waste Management Co., Stockholm, Sweden
The Swedish Nuclear Fuel and Waste Management Company (SKB) operates the underground repository for low- and intermediate-level nuclear waste (SFR) located in Försmark, Sweden. An extension of the SFR is planned to accommodate mainly waste arising from the decommissioning of Swedish nuclear power plants. The long-term safety assessment for the SFR repository takes into account the future ...
Underground Coal Fire Extinction Model Using Coupled Reactive Heat and Mass Transfer Model in Porous Media
S. Suhendra, M. Schmidt, and U. Krause
Laboratory II.2: “Flammable Bulk Materials and Dusts, Solid Fuels”, Federal Institute for Materials Research and Testing (BAM), Berlin, Germany
Green house gases emission associated with natural hazard of underground coal seam fire has been recognized as a worldwide problem leading to global warming threat. Therefore, in this paper a model to study underground coal fire is presented and the results will be devoted to strategic development of coal fire extinction technology within the framework of Sino-German Coal Fire Research ...
Thermo-Hydro-Mechanical-Chemical Modelling of the Bentonite Barriers in Final Disposal of High Level Nuclear Waste
M. Olin, M. Tanhua-Tyrkkö, V. Pulkkanen, A. Itälä, K. Rasilainen, A. Seppälä, and M. Liukkonen
VTT Technical Research Centre of Finland, Nuclear Energy, Finland
The bentonite barrier is an essential part of safe nuclear waste repository in granite bedrock. In this work COMSOL Multiphysics® is applied to modeling Thermo-Hydro-Mechanical-Chemical (THMC) processes taking place in a bentonite buffer. The system is studied in different geometries, which consists of an overall 3D layout and a 2D cross-section of bentonite buffer and open fracture. ...
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, ...
D. La Marra, A. Manconi, and M. Battaglia
Dept of Earth Sciences, University of Rome “La Sapienza”, Roma, Italy
IRPI-CNR, Strada delle Cacce, Torino, Italy
This study investigates the feedback between fault slip and dike intrusions during the Mono-Inyo eruption sequence of ~1350 A.D. (Mono Basin, California). We perform an extensive validation of 3D finite element models, implemented in the Structural Mechanics module of COMSOL Multiphysics, against standard analytical solutions of fault dislocation in a homogeneous elastic flat halfspace. The ...
J. Park, T.I. Bjørnarå, and B.A. Farrelly 
Norwegian Geotechnical Institute(NGI), Oslo, Norway
MultiField Geophysics AS, Norway
In the study, we present an efficient absorbing boundary domain technique whose main application is the 3D finite element (FE) modelling of the so-called controlled-source electromagnetic (CSEM) data, collected for the geophysical exploration. The developed technique is based on the real-value exponentially-stretched coordinates. We have implemented the developed technique using the ...