BENCHMARKS
Numerical investigation of CO2 sequestration in geological formations - problem-oriented benchmarks
Numerical simulators are essential tools in addressing problems and questions arising in the context of CO2 sequestration in the subsurface. In order to transfer any kind of laboratory results to the scale of application of the technologies it is necessary to understand the relevant physical processes and to implement them in mathematical and numerical models. Accompanying technical investigations with the development of numerical simulation methods helps significantly to understand the coupled physical processes. Furthermore, the models are necessary to quantitatively evaluate long-term scenarios, perform parameter studies and sensitivity analyses, etc. Within this project, we focus on injection scenarios in deep geological formations. In general, the physical systems can be described by multiphase multi-component models including non-isothermal effects mainly in the near-field of an injection due to pressure-lowering and expansion of the CO2. In recent years, there have been different numerical and analytical concepts developed for such kind of problems. Still, the validation of these models is a big challenge since in general the necessary data on the relevant scales are not sufficiently available. For assessing the reliability and accuracy of the different concepts we consider it essential to formulate benchmark problems that can be used for comparisons. This project will take and extend the results of recent benchmark studies. The formulation of new benchmarks is necessary due to the sophistication and improvement of the model concepts. Furthermore, we aim at designing specific problem-oriented benchmarks related to the current research in different national and international projects.
Project co-ordination:
Prof. Dr.-Ing. Rainer Helmig und Dr. H. Class
Lehrstuhl für Hydromechnik und Hydrosystemmodellierung
Universität Stuttgart
Partners:
Universität Stuttgart
Deutsche Montan Technologie, Essen
