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A multi-component two-phase flow algorithm for use in landfill processes modelling.
- Source :
-
Waste Management . Sep2014, Vol. 34 Issue 9, p1644-1656. 13p. - Publication Year :
- 2014
-
Abstract
- This paper describes the finite difference algorithm that has been developed for the flow sub-model of the University of Southampton landfill degradation and transport model LDAT. The liquid and gas phase flow components are first decoupled from the solid phase of the full multi-phase, multi-component landfill process constitutive equations and are then rearranged into a format that can be applied as a calculation procedure within the framework of a three dimensional array of finite difference rectangular elements. The algorithm contains a source term which accommodates the non-flow landfill processes of degradation, gas solubility, and leachate chemical equilibrium, sub-models that have been described in White and Beaven (2013). The paper includes an illustration of the application of the flow sub-model in the context of the leachate recirculation tests carried out at the Beddington landfill project. This illustration demonstrates the ability of the sub-model to track movement in the gas phase as well as the liquid phase, and to simulate multi-directional flow patterns that are different in each of the phases. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0956053X
- Volume :
- 34
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Waste Management
- Publication Type :
- Academic Journal
- Accession number :
- 103159204
- Full Text :
- https://doi.org/10.1016/j.wasman.2014.05.005