| 考虑土体非均质传热的河岸带水热耦合模型 |
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| 引用本文： | 张文兵,沈振中,任杰,徐力群,周聪聪,杨金孟.考虑土体非均质传热的河岸带水热耦合模型[J].水科学进展,2022,33(1):123-134. |
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| 作者姓名： | 张文兵 沈振中 任杰 徐力群 周聪聪 杨金孟 |
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| 作者单位： | 1.河海大学水文水资源与水利工程科学国家重点实验室, 江苏 南京 210098 |
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| 基金项目： | 国家自然科学基金资助项目(U1765205);水文水资源与水利工程科学国家重点实验室“一带一路”水与可持续发展科技基金资助项目(2019490711)。 |
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| 摘 要： | 为弥补当前河岸带水热交换模拟对土体非均质传热考虑不足的缺陷，在饱和-非饱和渗流及多孔介质传热理论基础上，引入土体有效导热系数模型，构建考虑土体非均质传热的河岸带水热耦合模型。结合COMSOL软件的特点，给出河岸带水热耦合模型的实现方法及求解流程，并通过河岸带温度和水位原型观测资料验证和对比分析不同有效导热系数模型下河岸带水热耦合模型的模拟效果。结果表明:与传统不考虑土体非均质传热方法相比，该模型能够较好地反映河岸带水热交换过程。此外，基于Johansen有效导热系数模型的河岸带水热耦合模型模拟效果表现最佳，模拟结果与前人试验结果一致。研究成果可为河岸带水热交换及污染物迁移过程的深入研究提供技术支撑。
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| 关 键 词： | 河岸带 水热耦合模型 非均质传热 有效导热系数模型 |
| 收稿时间： | 2020-11-16 |
Hydrothermal coupling model of a riparian zone considering heterogeneous heat transfer of soil |
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| ZHANG Wenbing,SHEN Zhenzhong,REN Jie,XU Liqun,ZHOU Congcong,YANG Jinmeng.Hydrothermal coupling model of a riparian zone considering heterogeneous heat transfer of soil[J].Advances in Water Science,2022,33(1):123-134. |
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| Authors: | ZHANG Wenbing SHEN Zhenzhong REN Jie XU Liqun ZHOU Congcong YANG Jinmeng |
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| Institution: | 1.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China2.College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China3.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China4.State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, China |
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| Abstract: | To improve the current simulations of hydrothermal exchange in riparian zones that do not take into account heterogeneous heat transfer of soil, this paper constructs a hydrothermal coupling model of riparian zones that includes heterogeneous heat transfer of soil by introducing the soil effective thermal conductivity model on the basis of saturated-unsaturated seepage and porous medium heat transfer theories. This study uses COMSOL software to implement the new method and simulate the hydrothermal coupling model of a riparian zone for different effective thermal conductivity models;the new model is verified by comparing and analyzing prototype observation data of temperature and water level in a riparian zone. The results show that the new model can better reflect the hydrothermal exchange process in a riparian zone than the traditional method that does not consider the heterogeneous heat transfer of the soil. In addition, the simulation of the hydrothermal coupling model based on Johansen′s effective thermal conductivity model performs the best, and the simulation results are consistent with previous experimental results. This study can provide technical support for in-depth study of hydrothermal exchange and pollutant migration processes in riparian zones. |
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| Keywords: | riparian zone hydrothermal coupling model heterogeneous heat transfer effective thermal conductivity model |
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