Three-dimensional thermal-hydraulic coupled analysis in the nuclear waste repository

被引：25

作者：

Zhou, Xiangyun ^{[1
]}

Xu, Yunshan ^{[1
]}

Sun, De'an ^{[1
]}

Tan, Yunzhi ^{[2
]}

Xu, Yongfu ^{[3
]}

机构：

[1] Shanghai Univ, Dept Civil Engn, Shanghai 200444, Peoples R China

[2] China Three Gorges Univ, Key Lab Geol Hazards Three Gorges Reservoir Area, Yichang 443002, Peoples R China

[3] Shanghai Jiao Tong Univ, Dept Civil Engn, Shanghai 200240, Peoples R China

来源：

ANNALS OF NUCLEAR ENERGY | 2021年 / 151卷

基金：

中国国家自然科学基金;

关键词：

Nuclear waste repository; Bentonite buffer layer; Coupled governing equation; Heat conduction; Moisture transport; Analytical solution;

D O I：

10.1016/j.anucene.2020.107866

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

In this paper, coupled governing equations were proposed to simulate three-dimensional heat conduction and moisture transport in the nuclear waste repository. Because there will be a large temperature gradient near inner and outer boundaries of the bentonite buffer layer, and the heat driven moisture transport is introduced in the governing equation of moisture transport. By applying the Fourier and Laplace transforms, the governing equations were converted to the Bessel equations, and the Laplace-domain solutions to temperature and moisture distributions were derived through the inverse Fourier transform. The reliability of the proposed solutions was verified through comparative analysis with the line heat source model. These analytical solutions were applied to obtain the evolutions of temperature field and moisture distribution near the waste canister. Finally, a sensitivity study was performed to analyze the effects of relevant parameters on the heat driven moisture transport. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：10

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