Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR027885 |
Heat Transfer in Unfrozen and Frozen Porous Media: Experimental Measurement and Pore‐Scale Modelling | |
Mehrdad Vasheghani Farahani; Aliakbar Hassanpouryouzband; Jinhai Yang; Bahman Tohidi | |
2020-08-12 | |
发表期刊 | Water Resources Research |
出版年 | 2020 |
英文摘要 | In this work, we conducted a mechanistic study on pore‐scale mechanisms controlling heat transfer in partially saturated porous media at unfrozen and frozen conditions. Experimental measurement of effective thermal conductivity (ETC) of simulated partially saturated sediments was carried out to explore the effect of different parameters including pore and overburden pressures, temperature, and water/ice saturation on the pore‐scale mechanisms governing heat transfer in multiphase porous media. The experimental measurements show that the heat transfer is a complex phenomenon affected by several important pore‐scale mechanisms such as particle‐particle conduction and particle‐fluid‐particle conduction, which are governed by water content and distribution, packing structure, wettability characteristics of grains, coordination number and physical contact among sediment particle. A numerical model was also developed for prediction of ETC using Free‐energy Lattice Boltzmann Model (LBM) and a space renormalization method. The model predictions were in good agreement with the experimental data, showing that the model is able to reliably estimate ETC with average relative deviations (ARD) of less than 10%, as it appropriately incorporates the pore‐scale mechanisms influencing ETC. The numerical model predictions were also compared with those of six predictive models available in the literature and root‐mean‐square errors (RMSE) were calculated to assess its accuracy against the existing models. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/287816 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Mehrdad Vasheghani Farahani,Aliakbar Hassanpouryouzband,Jinhai Yang,等. Heat Transfer in Unfrozen and Frozen Porous Media: Experimental Measurement and Pore‐Scale Modelling[J]. Water Resources Research,2020. |
APA | Mehrdad Vasheghani Farahani,Aliakbar Hassanpouryouzband,Jinhai Yang,&Bahman Tohidi.(2020).Heat Transfer in Unfrozen and Frozen Porous Media: Experimental Measurement and Pore‐Scale Modelling.Water Resources Research. |
MLA | Mehrdad Vasheghani Farahani,et al."Heat Transfer in Unfrozen and Frozen Porous Media: Experimental Measurement and Pore‐Scale Modelling".Water Resources Research (2020). |
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