COUPLED SIMULATION OF MSW LANDFILLS
Since 1997 the collaborative research centre ‘SFB 477 - Life Cycle Assessment of Structures via Innovative Monitoring’ runs at the Technical University of Braunschweig. Within this framework models for both time dependent mechanical behaviour and reactive transport processes have been developed at the Institute for Structural Analysis so far (Krase & Dinkler 2005; Krase & Dinkler 2006; Kindlein et al. 2005; Kindlein et al. 2006, Hanel J. 2001, Ebers- Ernst J., 2001). Experimental data from corresponding projects of SFB 477 enable validation of the governing parameters.
Models for both mechanical behaviour of municipal solid waste and reactive transport processes in landfills have been developed. Current research aims at solving the coupled problem of stress-deformation behaviour and reactive multiphase flow within a municipal solid waste landfill body employing these existing models. The coupled formulation is embedded in the framework of the Theory of Porous Media. The numerical formulation of the existing mechanical model is based on a finite element discretisation whereas that of the transport model is based on a finite volume method. Due to large deformation of the solid skeleton the governing equations resulting from the finite volume approach have to be solved in a domain that varies in time. Thus, in a first step, the geometry data that are used for analysis of the reactive multiphase flow have to be updated. This paper presents first results of the coupling procedure.
| Copyright: | © IWWG International Waste Working Group | |
| Source: | Specialized Session E (Oktober 2007) | |
| Pages: | 9 | |
| Price: | € 9,00 | |
| Autor: | Sonja Bente  Ursula Kowalsky Prof. Dr. Dieter Dinkler | |
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