| Records |
| Author |
Klock, H.; Külls, C.; Udluft, P. |
| Title |
Estimating recharge values using hydrochemical and geological data: a case study from the |
Type |
Conference Article |
| Year |
2001 |
Publication  |
Impact of Human Activity on Groundwater Dynamics: Proceedings of an International Symposium (Symposium S3) Held During the Sixth Scientific Assembly of the International Association of Hydrological Sciences (IAHS) at Maastricht, The Netherlands, from 18 t |
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Issue |
269 |
Pages |
25 |
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International Assn of Hydrological Sciences |
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no |
| Call Number |
THL @ christoph.kuells @ Klock2001estimating |
Serial |
60 |
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| Author |
Külls, C.; Leibundgut, C.; Schwarz, U.; Schick, A.P. |
| Title |
Channel infiltration study using dye tracers |
Type |
Journal Article |
| Year |
1995 |
Publication |
IAHS Publications-Series of Proceedings and Reports-Intern Assoc Hydrological Sciences |
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| Volume |
232 |
Issue |
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Pages |
429-436 |
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Wallingford [Oxfordshire]: IAHS, 1981- |
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THL @ christoph.kuells @ Kuells1995channel |
Serial |
36 |
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| Author |
Külls, C.; Adar, E.M.; Udluft, P. |
| Title |
Tracer Studies and Modelling of Regional Groundwater Systems-Resolving patterns of groundwater flow by inverse hydrochemical modelling in a semiarid Kalahari basin |
Type |
Journal Article |
| Year |
2000 |
Publication |
IAHS Publications-Series of Proceedings and Reports-Intern Assoc Hydrological Sciences |
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| Volume |
262 |
Issue |
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Pages |
447-452 |
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Wallingford [Oxfordshire]: IAHS, 1981- |
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THL @ christoph.kuells @ Kuells2006 |
Serial |
31 |
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| Author |
Klock, H.; Külls, C.; Udluft, P. |
| Title |
Quantification of Groundwater Recharge-Estimating recharge values using hydrochemical and geological data: A case study from the semiarid Kalahari catchment of northern Namibia |
Type |
Journal Article |
| Year |
2001 |
Publication |
IAHS Publications-Series of Proceedings and Reports-Intern Assoc Hydrological Sciences |
Abbreviated Journal |
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| Volume |
269 |
Issue |
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Pages |
25-32 |
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Wallingford [Oxfordshire]: IAHS, 1981- |
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THL @ christoph.kuells @ Klock2001 |
Serial |
32 |
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| Author |
Kurmanseiit, M.B.; Tungatarova, M.S.; Royer, J.-J.; Aizhulov, D.Y.; Shayakhmetov, N.M.; Kaltayev, A. |
| Title |
Streamline-based reactive transport modeling of uranium mining during in-situ leaching: Advantages and drawbacks |
Type |
Journal Article |
| Year |
2023 |
Publication |
Hydrometallurgy |
Abbreviated Journal |
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| Volume |
220 |
Issue |
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Pages |
106107 |
| Keywords |
3D modeling, In-situ leaching, Reactive transport model, Streamlines, Uranium recovery |
| Abstract |
Reactive transport modeling is known to be computationally intensive when applied to 3D problems. Transforming sequential computing on the computer processor units (CPU) into parallelized computation on the high-performance parallel graphic processor units (GPU) is a classical approach to increasing computational performance. Another complementary approach is to decompose a complex 3D modeling problem into a set of simpler 1D problems using streamline approaches which can be easily parallelized, therefore reducing computation time. This paper investigates solutions to the equations governing dissolution and transport using streamlines coupled with a parallelization approach. In addition, an analytical solution to the dissolution and transfer equations of uranium describing the In-Situ Leaching (ISL) mining recovery is found using an approximation series to the 2nd order. The analytical solution is compared to the 1D numerical resolution along the streamlines and to the 3D simulation results superimposed on the streamline. Both approaches give similar results with a relative error of \textless2 % (2%). The proposed methodology is then applied to a case study in which the classical 3D resolution is compared to the newly suggested streamline solution, demonstrating that the streamline approach increases computational performances by a factor ranging from hundred to thousand depending on the complexity of the grid-block model. |
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0304-386x |
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no |
| Call Number |
THL @ christoph.kuells @ kurmanseiit_streamline-based_2023 |
Serial |
190 |
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