Numerical Analysis on Feasibility of Thermally Induced Pore Fluid Flow in Saturated Soils
Numerical Analysis on Feasibility of Thermally Induced Pore Fluid Flow in Saturated Soils
复制标题
饱和土中热致孔隙流体流动的可行性数值分析
DOI：
10.1061/9780784482124.009
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Ghasemi-Fare, Omid
中科院分区：
文献类型：
--
作者：
Tamizdoust, Mohammadreza Mir;Ghasemi-Fare, Omid
通过对热源周围土壤特性的分析，可以了解土壤介质中的传热机理。以往的研究多以热传导为土壤中的主要传热机制，而对饱和土壤中的自然对流传热研究较少。只有有限的研究在文献中，这表明存在的热致孔隙流体流动的土壤介质。已经观察到，通过砂中的孔隙流体流动的热对流促进了地面中的热传递。因此，必须同时考虑热传导和热对流，才能准确地模拟土壤中的传热机制。本文在稳态条件下，数值研究了具有垂直热源的二维轴对称土壤区域中水的自然对流。比较了不同土壤类型的土壤热响应和传热机理。分析了不同土壤类型下热诱导孔隙流体流动的可行性。结果确定了在高渗透性土壤（例如，粗砂）中的热对流的影响，并确认在低渗透性粉土和粘土中的热对流的影响是可以忽略的。
The exact heat transfer mechanism in the soil media can be understood by analyzing the soil behavior surrounding the heat sources. In literature, heat conduction has been considered as a main heat transfer mechanism in soil, and less attention has been given to the natural heat convection in saturated soils. There is only limited research in the literature which shows the presence of thermally induced pore fluid flow in soil media. It has been observed that heat convection through pore fluid flow in sand facilitates heat transfer in the ground. Therefore, both heat conduction and heat convection must be considered to accurately model the heat transfer mechanism in soil. In this paper, the presence of natural convection of water in a 2D axisymmetric domain of soil with a vertical heat source has been numerically investigated in steady-state condition. The soil thermal response and heat transfer mechanism for different soil types are compared. Feasibility of thermally-induced pore fluid flow is analyzed for different soil types. The results determine the presence of thermally driven pore fluid flow in high permeability soil (e.g., coarse sand) and confirm that the effect of heat convection in low permeability silt and clay is negligible.
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DOI：
10.1108/09615530010338196
发表时间：
2000-01-01
影响因子：
4.2
作者：
Aydin, O;Yang, WJ
通讯作者：
Yang, WJ
影响因子：
1.6
作者：
Chong-bin Zhao;B. Hobbs;K. Baxter;H. Mühlhaus;A. Ord
通讯作者：
Chong-bin Zhao;B. Hobbs;K. Baxter;H. Mühlhaus;A. Ord
DOI：
10.1061/9780784480472.012
发表时间：
2017-03
期刊：
--
影响因子：
--
作者：
Omid Ghasemi-Fare;P. Basu
通讯作者：
Omid Ghasemi-Fare;P. Basu
土壤热迁移的离心机模拟
DOI：
10.1680/ijpmg.2004.040303
发表时间：
2004
影响因子：
1.9
作者：
S. Krishnaiah;D. Singh
通讯作者：
D. Singh
DOI：
--
发表时间：
2016
期刊：
影响因子：
--
作者：
Omid Ghasemi;P. Basu
通讯作者：
P. Basu