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Groundwater Contamination : Discretization & Simulation of Systems for Convection-Diffusion-Dispersion Reactions, Hardback Book

Groundwater Contamination : Discretization & Simulation of Systems for Convection-Diffusion-Dispersion Reactions Hardback

Description

This work arose from research results of the interdisciplinary centre for scientific computing at the University of Heidelberg as well as of the Humboldt University.

The contribution of this work is the simulation of contaminated ground water developed from models about the disposal of severely contaminated material, i.e. radioactive fuels or chemical waste products. The model is based on equations for convection-diffusion-dispersion reactions.

The equation in the present book is used for the modelling of a radionuclide transport of pollutants in ground water as well as for chemical irreversible reactions.

While solving such problems, so-called multi-scale processes arise.

Conventional treatment of black-box discretisation and solution methods are impossible or complicated.

Hence, physically motivated methods are used, i.e. to integrate one-dimensional analytical solutions of convection-reaction equations.

Especially so-called decomposition methods were emphasised.

These methods decouple the different scales and solve the equations based on scales with each other.

Therefore the previous coupling errors between the terms of the equations can be controlled and minimised with iterative methods.

Furthermore, analytical solutions could be used for comparisons with the numerical solutions.

In this work the theoretical derivations of solutions as well as their application in numerical methods for realistic calculations could be acquired.

The methods were assembled in a program package that had been developed in a project to evolve a program for modelling the transport of pollutants in ground water.

Some realistic damage events could be calculated based on dates from the partner GRS in Braunschweig, Germany.

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