An energy conserving method for simulating heat transfer in permafrost with hybrid modeling
Rapid climate change has lead to widespread warming of land surface temperatures throughout the Arctic, thereby accelerating the thawing of perennially frozen, carbon-rich soil, most commonly referred to as permafrost. Subsurface modeling of heat and water transport plays a key role in understanding...
| Main Authors: | , , , , |
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| Format: | Conference Object |
| Language: | unknown |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://epic.awi.de/id/eprint/56218/ https://hdl.handle.net/10013/epic.4508bd1f-6125-48a2-9e28-51f8276cf2d8 |
| Summary: | Rapid climate change has lead to widespread warming of land surface temperatures throughout the Arctic, thereby accelerating the thawing of perennially frozen, carbon-rich soil, most commonly referred to as permafrost. Subsurface modeling of heat and water transport plays a key role in understanding how past, present, and future changes in the climate affect the rate and extent of permafrost thaw. We propose a novel hybrid modeling approach for solving by reparameterizing it as a universal partial differential equation, where the inverse enthalpy operator is represented by a universal approximator. Such a method would alleviate one of the major numerical difficulties in the simulation of two-phase heat transport and would allow for efficient and flexible modeling of permafrost at large time scales. |
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