Journal
COMPUTATIONAL GEOSCIENCES
Volume 13, Issue 3, Pages 281-300Publisher
SPRINGER
DOI: 10.1007/s10596-008-9118-6
Keywords
Numerical modelling; Multiphase; Multicomponent; Cohesive clays; Soils; Deformation; Swelling and shrinking
Funding
- Deutsche Forschungsgemeinschaft [HE 2531/3, EH 107/9, ME 501/18-4]
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Multiphase flow processes in unsaturated cohesive soils are often affected by deformation due to swelling and shrinking as a result of varying water contents. This paper presents a model concept which is denoted 'phenomenological' in terms of the processes responsible for soil deformation, since the effects of deformation on flow and transport are only considered by constitutive relations that allow an adaptation of the hydraulic properties. This new model is validated in a detailed intercomparison study with two state-of-the-art models that are capable of explicitly describing the processes relevant for the deformation. A 'numerical experiment' with a state-of-the-art reference model is used to produce 'measurement data' for an inverse-modelling-based estimation of the model input parameters for the phenomenological concept.
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