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Forschung - Lehrstuhl für Hydromechanik und Hydrosystemmodellierung

Multi-scale multi-physics Modellierung von komplexen Systemen
Projektleiter:Prof. Dr.-Ing. Rainer Helmig, apl. Prof. Dr. rer. nat. Bernd Flemisch, M.Sc.
Wissenschaftliche Mitarbeiter:Martin Schneider, M.Sc.
Projektdauer:1.6.2013 - 1.6.2016
Anschlussprojekt von: Multi-Scale-, Multi-Physics-Ansätze zur Berechnung von Strömungs- und Transportvorgängen in porösen Medien

Dieses Projekt gehört zum Forschungsschwerpunkt:

Publikationen: Link


Flow and transport phenomena in porous media are the governing processes in many natural, industrial, and biological systems. These processes occur on different spatial and temporal scales and may also differ locally. On the one hand, highly complex processes can occur in parts of a system. These require more complex model formulations as well as a fine spatial and temporal resolution. Physically simpler processes in other parts of the system may allow simpli- fied models and an examination on coarser scales. On the other hand, porous media are in general heterogeneous on every spatial scale. Thus, depending on the processes, the hetero- geneities give another constraint for a sufficient spatial resolution. In recent years we have de- veloped multi-physics methods, which are very efficient for problems of locally differing com- plexity and multi-scale methods which allow for decreasing the global degrees of freedom for problems including highly resolved heterogeneous porous media. The aim of this project is to develop an adaptive multi-scale-multi-physics toolbox which enables the simulation of complex large scale porous media applications. In a first step the existing multi-scale and multi-physics methods have to be combined and unified. Besides efficiency, robustness is a key issue for the simulation of complex realistic applications. Thus, in a second step new numerical methods and model concepts will be included to gain robustness and flexibility. In the final step the focus is on the application of the method to a real-site large-scale example. We think that the combina- tion of efficient multi-scale-multi-physics strategies and the computational power of parallel in- frastructures like high performance computers or clusters can open new possibilities for the accurate simulation of challenging large-scale applications in porous media, which are, for ex- ample, gas storage in the subsurface, thermal energy production from geothermal sources, or investigation of nuclear storage sites. The outcome of this project will play a decisive role re- garding the success of the common benchmark case of the SimTech Project Network 5, driven by the SimTech vision “Towards Interactive Environmental Engineering”.