Thermo-Hydromechanical Coupling Responses Driven by a Central Heat Source in Unsaturated Soils
Based on the thermodynamic and thermoelastic theory, the coupled governing equations of deformation, heat transfer, and moisture migration in unsaturated soils were given. The coupled calculation process was realized by the finite element method. The hydrothermal coupling characteristics of two case...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/2867985 |
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| author | Wei Wang Jingjing Liu Jing Chen |
| author_facet | Wei Wang Jingjing Liu Jing Chen |
| author_sort | Wei Wang |
| collection | DOAJ |
| description | Based on the thermodynamic and thermoelastic theory, the coupled governing equations of deformation, heat transfer, and moisture migration in unsaturated soils were given. The coupled calculation process was realized by the finite element method. The hydrothermal coupling characteristics of two cases of unsaturated kaolin clay were studied by using a self-developed test device, and the test results were compared with the numerical results. The results showed that when the initial saturation of the soil is high, the volumetric water content of the measured point increases, and then it is in a stable state during the heating process. When the initial saturation is low, the volumetric water content near the heat source increases firstly and then decreases during the heating process. The rise and fall of temperature make the volumetric water content of the soil irreversible. The volumetric water content of each measured point is lower than the initial state. The closer it is to the internal measured heat source, the more obvious this phenomenon is; the lower the initial saturation is, the more obvious it is. |
| format | Article |
| id | doaj-art-23372d45547c4ca0bd03c5f7684d9d5b |
| institution | Kabale University |
| issn | 1687-8442 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-23372d45547c4ca0bd03c5f7684d9d5b2025-02-03T06:05:32ZengWileyAdvances in Materials Science and Engineering1687-84422022-01-01202210.1155/2022/2867985Thermo-Hydromechanical Coupling Responses Driven by a Central Heat Source in Unsaturated SoilsWei Wang0Jingjing Liu1Jing Chen2China Hebei Construction and Geotechnical Investigation Group Ltd.China Hebei Construction and Geotechnical Investigation Group Ltd.School of Civil EngineeringBased on the thermodynamic and thermoelastic theory, the coupled governing equations of deformation, heat transfer, and moisture migration in unsaturated soils were given. The coupled calculation process was realized by the finite element method. The hydrothermal coupling characteristics of two cases of unsaturated kaolin clay were studied by using a self-developed test device, and the test results were compared with the numerical results. The results showed that when the initial saturation of the soil is high, the volumetric water content of the measured point increases, and then it is in a stable state during the heating process. When the initial saturation is low, the volumetric water content near the heat source increases firstly and then decreases during the heating process. The rise and fall of temperature make the volumetric water content of the soil irreversible. The volumetric water content of each measured point is lower than the initial state. The closer it is to the internal measured heat source, the more obvious this phenomenon is; the lower the initial saturation is, the more obvious it is.http://dx.doi.org/10.1155/2022/2867985 |
| spellingShingle | Wei Wang Jingjing Liu Jing Chen Thermo-Hydromechanical Coupling Responses Driven by a Central Heat Source in Unsaturated Soils Advances in Materials Science and Engineering |
| title | Thermo-Hydromechanical Coupling Responses Driven by a Central Heat Source in Unsaturated Soils |
| title_full | Thermo-Hydromechanical Coupling Responses Driven by a Central Heat Source in Unsaturated Soils |
| title_fullStr | Thermo-Hydromechanical Coupling Responses Driven by a Central Heat Source in Unsaturated Soils |
| title_full_unstemmed | Thermo-Hydromechanical Coupling Responses Driven by a Central Heat Source in Unsaturated Soils |
| title_short | Thermo-Hydromechanical Coupling Responses Driven by a Central Heat Source in Unsaturated Soils |
| title_sort | thermo hydromechanical coupling responses driven by a central heat source in unsaturated soils |
| url | http://dx.doi.org/10.1155/2022/2867985 |
| work_keys_str_mv | AT weiwang thermohydromechanicalcouplingresponsesdrivenbyacentralheatsourceinunsaturatedsoils AT jingjingliu thermohydromechanicalcouplingresponsesdrivenbyacentralheatsourceinunsaturatedsoils AT jingchen thermohydromechanicalcouplingresponsesdrivenbyacentralheatsourceinunsaturatedsoils |