Intraval, test case 13 ; Experimental study of brine transport in porous media
Hassanizadeh SM Leijnse A Vries WJ de Stapper RAM
Hassanizadeh SM
Leijnse A
Vries WJ de
Stapper RAM
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Series / Report no.
Open Access
Type
Report
Language
en
Date of publication
1990-09-30
Year of publication
Research Projects
Organizational Units
Journal Issue
Title
Intraval, test case 13 ; Experimental study of brine
transport in porous media
Translated Title
Experimenteel onderzoek naar pekeltransport in een
poreus medium
Published in
Abstract
Abstract niet beschikbaar
An integral part of the safety assessment of nuclear waste disposal is the study of nuclide transport in the geosphere. Such studies are commonly made possible by means of mathematical models. Mathematical models serve as a powerful tool for prediction of release of waste into the geosphere, movement of water and contaminants through the geosphere, and calculation of doses of radioactive material reaching the biosphere. Groundwater in the aquifers surrounding and overlying salt formations often contains a high concentration of salt. To study certain flow and transport processes under such extreme conditions, a series of laboratory experiments have been carried out. Calculated and measured breakthrough curves agree very well for low concentration experiments. For high concentrations, however, a poor agreement is obtained with the classical formulation of coupled flow and transport in porous media. It appears that the basic conceptual theory needs to be modified for high concentration gradients. This report describes the set-up of the experiments, methods and materials used, and data acquisition and analysis. It also contains results of simulation of experiments with METROPOL-3 and gives an account of the necessary modifications to the basic conceptual theory for high-concentration-gradient situations. It appears that a nonlinear dispersion theory satisfactorily simulates high- as well as low-concentration-gradient experiments.
An integral part of the safety assessment of nuclear waste disposal is the study of nuclide transport in the geosphere. Such studies are commonly made possible by means of mathematical models. Mathematical models serve as a powerful tool for prediction of release of waste into the geosphere, movement of water and contaminants through the geosphere, and calculation of doses of radioactive material reaching the biosphere. Groundwater in the aquifers surrounding and overlying salt formations often contains a high concentration of salt. To study certain flow and transport processes under such extreme conditions, a series of laboratory experiments have been carried out. Calculated and measured breakthrough curves agree very well for low concentration experiments. For high concentrations, however, a poor agreement is obtained with the classical formulation of coupled flow and transport in porous media. It appears that the basic conceptual theory needs to be modified for high concentration gradients. This report describes the set-up of the experiments, methods and materials used, and data acquisition and analysis. It also contains results of simulation of experiments with METROPOL-3 and gives an account of the necessary modifications to the basic conceptual theory for high-concentration-gradient situations. It appears that a nonlinear dispersion theory satisfactorily simulates high- as well as low-concentration-gradient experiments.
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DGM/SR