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| Titel |
Benchmarking numerical freeze/thaw models |
| VerfasserIn |
Wolfram Rühaak, Hauke Anbergen, John Molson, Christophe Grenier, Ingo Sass |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250106663
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| Publikation (Nr.) |
 EGU/EGU2015-6340.pdf |
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| Zusammenfassung |
| The modeling of freezing and thawing of water in porous media is of increasing interest, and for which very different application areas exist. For instance, the modeling of permafrost regression with respect to climate change issues is one area, while others include geotechnical applications in tunneling and for borehole heat exchangers which operate at temperatures below the freezing point.
The modeling of these processes requires the solution of a coupled non-linear system of partial differential equations for flow and heat transport in space and time. Different code implementations have been developed in the past. Analytical solutions exist only for simple cases.
Consequently, an interest has arisen in benchmarking different codes with analytical solutions, experiments and purely numerical results, similar to the long-standing DECOVALEX and the more recent “Geothermal Code Comparison” activities. The name for this freezing/ thawing benchmark consortium is INTERFROST.
In addition to the well-known so-called Lunardini solution for a 1D case (case T1), two different 2D problems will be presented, one which represents melting of a frozen inclusion (case TH2) and another which represents the growth or thaw of permafrost around a talik (case TH3). These talik regions are important for controlling groundwater movement within a mainly frozen ground.
First results of the different benchmark results will be shown and discussed. |
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