Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1016/j.matcom.2020.05.024
Document accepted manuscript
Title (Primary) Non-iterative phase-equilibrium model of the H2O-CO2-NaCl-system for large-scale numerical simulations
Author Grunwald, N.; Maßmann, J.; Kolditz, O. ORCID logo ; Nagel, T.
Source Titel Mathematics and Computers in Simulation
Year 2020
Department ENVINF
Volume 178
Page From 46
Page To 61
Language englisch
Keywords Phase equilibrium; CO2-H2O-NaCl-system; Saline aquifer; CO2 storage; OpenGeoSys
Abstract This article features a simple method for describing the phase equilibrium of the ternary water-salt-carbon dioxide system. At first, an iterative solution is shown using well known equations of state and solubility correlations to predict the compositions of liquid and gas phases in a saline aquifer. By virtue of several assumptions, iterations can be avoided entirely in order to use the method for demanding large-scale numerical simulations. Subsequently, the iterative method as well as the simplification are evaluated against experimental data. Both solutions provide adequate accuracy for engineering problems such as subsurface carbon dioxide storage.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=23208
Grunwald, N., Maßmann, J., Kolditz, O., Nagel, T. (2020):
Non-iterative phase-equilibrium model of the H2O-CO2-NaCl-system for large-scale numerical simulations
Math. Comput. Simul. 178 , 46 - 61 10.1016/j.matcom.2020.05.024