Conference Abstract
| 
10 Nov 2021
Conference Abstract |
| 10 Nov 2021
| 10 Nov 2021
Modelling of hydrodynamic and solute transport with consideration of the release of low-level radioactive substances
Roman Winter
CORRESPONDING AUTHOR
Institut für Wasser- und Umweltsystemmodellierung, University of Stuttgart, 70569 Stuttgart, Germany
Bernd Flemisch
Institut für Wasser- und Umweltsystemmodellierung, University of Stuttgart, 70569 Stuttgart, Germany
Holger Class
Institut für Wasser- und Umweltsystemmodellierung, University of Stuttgart, 70569 Stuttgart, Germany
Rainer Merk
BfS Federal Office for Radiation Protection, 38201 Salzgitter, Germany
Related authors
Marc Johnen, Roman Winter, Bernd Flemisch, Holger Class, Holger Seher, and Henrich Meyering
Saf. Nucl. Waste Disposal Discuss., https://doi.org/10.5194/sand-2026-11, https://doi.org/10.5194/sand-2026-11, 2026
Preprint under review for SaND
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The decommissioning of nuclear facilities generates large quantities of very low-level radioactive waste (VLLW), which, under German law, can be disposed of via various waste pathways. One path involves the disposal of VLLW in landfills. This work presents a comparison between three numerical groundwater modelling codes. Differences in the process implementations within the codes were identified. Nevertheless, the results show good agreement in the calculations performed.
Marc Johnen, Roman Winter, Bernd Flemisch, Holger Class, Holger Seher, and Henrich Meyering
Saf. Nucl. Waste Disposal Discuss., https://doi.org/10.5194/sand-2026-11, https://doi.org/10.5194/sand-2026-11, 2026
Preprint under review for SaND
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The decommissioning of nuclear facilities generates large quantities of very low-level radioactive waste (VLLW), which, under German law, can be disposed of via various waste pathways. One path involves the disposal of VLLW in landfills. This work presents a comparison between three numerical groundwater modelling codes. Differences in the process implementations within the codes were identified. Nevertheless, the results show good agreement in the calculations performed.
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Water in natural environments consists of many ions. Ions are electrically charged and exert electric forces on each other. We discuss whether the electric forces are relevant in describing mixing and reaction processes in natural environments. By comparing our computer simulations to lab experiments in literature, we show that the electric interactions between ions can play an essential role in mixing and reaction processes, in which case they should not be neglected in numerical modeling.
