Acta Geotechnica, 2014, Vol.9(1), p.81(6)
Byline: Ashok Singh (1), Jens Olaf Delfs (1,2), Uwe Jens Gorke (1), Olaf. Kolditz (1,3) Keywords: Fracture; OpenGeoSys; Free convection; Sorption; Leakage; Translated volume Abstract: In geological formations, migration of CO.sub.2 plume is very complex and irregular. To make CO.sub.2 capture and storage technology feasible, it is important to quantify CO.sub.2 amount associated with possible leakage through natural occurring faults and fractures in geologic medium. Present work examines the fracture aperture effect on CO.sub.2 migration due to free convection. Numerical results reveal that fracture with larger-aperture intensify CO.sub.2 leakage. Mathematical formulation and equations of state for the mixture are implemented within the object-oriented finite element code OpenGeoSys developed by the authors. The volume translated Peng--Robinson equation of state is used for material properties of CO.sub.2 and water. Author Affiliation: (1) Helmholtz Centre for Environmental Research-UFZ, Permoserstr. 15, 04318, Leipzig, Germany (2) Water and Earth System Science Research Centre (WESS), Keplerstrasse 17, 72074, Tubingen, Germany (3) University of Technology Dresden, Dresden, Germany Article History: Registration Date: 25/02/2013 Received Date: 25/01/2013 Accepted Date: 25/02/2013 Online Date: 05/05/2013
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