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| DOI | 10.1007/s11440-017-0563-z |
| A modified normalized model for predicting effective soil thermal conductivity | |
| He H.; Zhao Y.; Dyck M.F.; Si B.; Jin H.; Lv J.; Wang J. | |
| 发表日期 | 2017 |
| ISSN | 18611125 |
| 卷号 | 12期号:6 |
| 英文摘要 | Effective soil thermal conductivity (λeff) describes the ability of a multiphase soil to transmit heat by conduction under unit temperature gradient. It is a critical parameter for environmental science, earth and planetary science, and engineering applications. Numerous models are available in the literature, but their applicability is generally restricted to certain soil types or water contents (θ). The objective of this study was to develop a new model in the similar form of the Johansen 1975 model to simulate the λeff(θ) relationship of soils of various soil textures and water contents. An exponential type model with two parameters is developed and a new function for calculating dry soil thermal conductivity is presented. Performance of the new model and six other normalized models were evaluated with published datasets. The results show that the new model is able to well mimic λeff(θ) relationship of soils from sand to silt loam and from oven dry to full saturation. In addition, it has the best performance among the seven models under test (with root-mean-square error of 0.059 W m−1 °C−1, average deviations of 0.0009 W m−1 °C−1, and Nash–Sutcliffe efficiency of 0.994). The new model has potential to improve the reliability of soil thermal conductivity estimation and be incorporated into numerical modeling for environmental, earth and engineering studies. © 2017, Springer-Verlag Berlin Heidelberg. |
| 英文关键词 | Effective thermal conductivity; Empirical model; Heat pulse method; Water content |
| URL | https://www2.scopus.com/inward/record.uri?eid=2-s2.0-85020678958&doi=10.1007%2fs11440-017-0563-z&partnerID=40&md5=b3812883cd35c10cdf2677641f92e427 |
| 语种 | 英语 |
| 来源期刊 | Acta Geotechnica
 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/77151 |
| 推荐引用方式 GB/T 7714 | He H.； Zhao Y.； Dyck M.F.； Si B.； Jin H.； Lv J.； Wang J.. A modified normalized model for predicting effective soil thermal conductivity[J]. 中国科学院西北生态环境资源研究院,2017,12(6). |
| APA | He H.； Zhao Y.； Dyck M.F.； Si B.； Jin H.； Lv J.； Wang J..(2017).A modified normalized model for predicting effective soil thermal conductivity.Acta Geotechnica,12(6). |
| MLA | He H.； Zhao Y.； Dyck M.F.； Si B.； Jin H.； Lv J.； Wang J.."A modified normalized model for predicting effective soil thermal conductivity".Acta Geotechnica 12.6(2017). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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