An effective thermal conductivity model of rocks considering variable saturation and pore structure: Theoretical modelling and experimental validations
文献类型：期刊论文
| 作者 | Yuan, Jingqiang1,2; Chen, Weizhong2,3; Tan, Xianjun2; Ma, Wei2,4; Zhou, Yun2; Zhao, Wusheng2 |
| 刊名 | INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
 |
| 出版日期 | 2021-02-01 |
| 卷号 | 121页码:11 |
| 关键词 | Effective thermal conductivity (ETC) Three-component ETC model Pore shape Weighted harmonic parameter Saturation degree |
| ISSN号 | 0735-1933 |
| DOI | 10.1016/j.icheatmasstransfer.2020.105088 |
| 英文摘要 | The effective thermal conductivity (ETC) of rocks is crucial for many geological and engineering applications and projects. In this study, a three-component ETC model was proposed, which includes seven parameters, that are, the thermal conductivities of water (lambda(w)), gas (lambda(g)) and solid phase (lambda(s)), the porosity (phi), the coefficient of shape factor (n), the weighted harmonic parameter (eta) and saturation degree (S-r). The methods to establish the parameters of the proposed model were described with validation carried out using several experiments including X-ray diffraction (XRD) test, porosity test and thermal conductivity test. Comparisons performed indicated that the new proposed model was flexible enough to reflect the variation of the ETC with saturation degree. Furthermore, the sensitivity analysis and grey correlation analysis were given in examining the effect of the parameters included in the model. The results showed that: 1) The parameter sensitivity analysis and grey correlation analysis of ETC show that the ETC is most sensitive to the thermal conductivity of solid phase (lambda(s)), followed by coefficient of shape factor (n), weighted harmonic parameter (eta) and saturation degree (S-r), and less sensitive to the porosity (phi) .2) When the pore shape of the porous media is irregular or the thermal conductivity ratio of the continuous phase and discontinuous phase is larger than 100, n is a key parameter that can tremendously influence the value of ETC. 3) Although the change of eta does not influence the maximum and minimum values of ETC, it can greatly affect the variation of ETC when 0 < S-r < 1. |
| 资助项目 | Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0904] ; National Outstanding Youth Science Fund Project of National Natural Science Foundation of China[51922104] ; Science and Technology Research and Development Program of China State Railway Group Co., Ltd.[P2018G045] ; Hubei Provincial Natural Science Foundation of China[2018CFA012] ; Key Research Program of the Chinese Academy of Sciences[KFZD-SW-423] ; Hubei Key Laboratory of Roadway Bridge and Structure Engineering (Wuhan University of Technology)[DQZDJJ201701] ; Youth Innovation Promotion Association CAS |
| WOS研究方向 | Thermodynamics ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000614147700017 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25757]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Tan, Xianjun |
| 作者单位 | 1.Wuhan Univ Technol, Hubei Key Lab Rd Bridge & Struct Engn, Wuhan 430070, Hubei, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 3.Shandong Univ, Res Ctr Geotech & Struct Engn, Jinan 250061, Shandong, Peoples R China 4.Texas A&M Univ, Harold Vance Dept Petr Engn, College Stn, TX 77840 USA |
| 推荐引用方式 GB/T 7714 | Yuan, Jingqiang,Chen, Weizhong,Tan, Xianjun,et al. An effective thermal conductivity model of rocks considering variable saturation and pore structure: Theoretical modelling and experimental validations[J]. INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER,2021,121:11. |
| APA | Yuan, Jingqiang,Chen, Weizhong,Tan, Xianjun,Ma, Wei,Zhou, Yun,&Zhao, Wusheng.(2021).An effective thermal conductivity model of rocks considering variable saturation and pore structure: Theoretical modelling and experimental validations.INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER,121,11. |
| MLA | Yuan, Jingqiang,et al."An effective thermal conductivity model of rocks considering variable saturation and pore structure: Theoretical modelling and experimental validations".INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER 121(2021):11. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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