Numerical Simulation of Thawing Process in Frozen Soil
Permafrost has been thawing faster due to climate change which would release greenhouse gases, change the hydrological regimes, affect buildings above, and so on. It is necessary to study the thawing process of frozen soil. A water-heat coupling model for frozen soil thawing is established on Darcy’...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2020/8822320 |
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| author | Zhaoyu Yan Wei Pan Junjie Fang Zihui Liu |
| author_facet | Zhaoyu Yan Wei Pan Junjie Fang Zihui Liu |
| author_sort | Zhaoyu Yan |
| collection | DOAJ |
| description | Permafrost has been thawing faster due to climate change which would release greenhouse gases, change the hydrological regimes, affect buildings above, and so on. It is necessary to study the thawing process of frozen soil. A water-heat coupling model for frozen soil thawing is established on Darcy’s law and Heat Transfer in Porous Media interfaces in Comsol Multiphysics 5.5. Three curves of total liquid water volume, minimum temperature, and total heat flux in the thawing process are obtained from a numerical simulation. The distributions of liquid water, temperature, and pressure based on time are simulated too. The liquid water distribution is consistent with the total liquid water volume curve. The temperature distribution is confirmed by the minimum temperature and total heat flux curve. The pressure distribution represents ice in the frozen soil that generates negative pressure during the melting process. The numerical simulation research in this article deepens the understanding of the internal evolution in the process of frozen soil thawing and has a certain reference value for subsequent experimental research and related applications. |
| format | Article |
| id | doaj-art-77981c801162445a9f9195f66d78f65a |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-77981c801162445a9f9195f66d78f65a2025-02-03T01:28:34ZengWileyGeofluids1468-81151468-81232020-01-01202010.1155/2020/88223208822320Numerical Simulation of Thawing Process in Frozen SoilZhaoyu Yan0Wei Pan1Junjie Fang2Zihui Liu3School of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaPermafrost has been thawing faster due to climate change which would release greenhouse gases, change the hydrological regimes, affect buildings above, and so on. It is necessary to study the thawing process of frozen soil. A water-heat coupling model for frozen soil thawing is established on Darcy’s law and Heat Transfer in Porous Media interfaces in Comsol Multiphysics 5.5. Three curves of total liquid water volume, minimum temperature, and total heat flux in the thawing process are obtained from a numerical simulation. The distributions of liquid water, temperature, and pressure based on time are simulated too. The liquid water distribution is consistent with the total liquid water volume curve. The temperature distribution is confirmed by the minimum temperature and total heat flux curve. The pressure distribution represents ice in the frozen soil that generates negative pressure during the melting process. The numerical simulation research in this article deepens the understanding of the internal evolution in the process of frozen soil thawing and has a certain reference value for subsequent experimental research and related applications.http://dx.doi.org/10.1155/2020/8822320 |
| spellingShingle | Zhaoyu Yan Wei Pan Junjie Fang Zihui Liu Numerical Simulation of Thawing Process in Frozen Soil Geofluids |
| title | Numerical Simulation of Thawing Process in Frozen Soil |
| title_full | Numerical Simulation of Thawing Process in Frozen Soil |
| title_fullStr | Numerical Simulation of Thawing Process in Frozen Soil |
| title_full_unstemmed | Numerical Simulation of Thawing Process in Frozen Soil |
| title_short | Numerical Simulation of Thawing Process in Frozen Soil |
| title_sort | numerical simulation of thawing process in frozen soil |
| url | http://dx.doi.org/10.1155/2020/8822320 |
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