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Sensitivity Analysis of the Quantiles of Tracer Breakthrough Curves in a One and Three Continuum Model

Author(s): D. Bachmann; T. Vogel; J. Kongeter

Linked Author(s): Jürgen Köngeter

Keywords: Multi continuum modeling; Sensitivity analysis; Automatic differentiation; Tracer breakthrough curve

Abstract: For the prediction of flow and transport in hard rock aquifers high standard experimental and simulation techniques are required e. g. due to fast fluid flow and transport in fractures and storage effects in the matrix system. One numerical approach to model flow and transport in hard rock aquifers is the multi continuum modeling. In this context a sensitivity analysis is performed. This analysis may lead to a better understanding of natural processes and their approximation by understanding the influences of parameter perturbations. A first investigation is performed by a one-dimensional, one continuum model. The changes of the BTC-shape are illustrated and quantified by the sensitivities. An investigation carried out at a one-dimensional, three continuum model points out the different phases of the tracer breakthrough. Relevant exchange processes are exhibited.


Year: 2005

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