Transient Heat and Moisture Flow Around Heat Source Buried in an Unsaturated Half Space
Transient Heat and Moisture Flow Around Heat Source Buried in an Unsaturated Half Space
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DOI：
10.1007/s11242-008-9298-5
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发表时间：
2009-06
影响因子：
2.7
通讯作者：
Li Yu;Guangjing Chen
中科院分区：
文献类型：
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作者：
Li Yu;Guangjing Chen
本文对埋于非饱和半空间中的圆盘热源和圆柱热源的瞬态热湿迁移问题进行了求解。在Hankel-Laplace变换域中以无量纲形式给出了解。由于热驱动湿迁移耦合效应对低渗透介质流场的改变具有重要意义，本文重点研究了热驱动湿迁移耦合效应。参数研究已被执行，以评估五个独立的无量纲参数对流场的影响。通过与有限元程序CODE_BRIGHT所得结果的比较，证明了本文方法的稳定性和准确性。尽管为了获得Hankel-Laplace变换域中的解析解所需的简化假设，但结果包含了耦合热工水力（T-H）问题中涉及的主要机制，并且它们最终可用于验证目的。
This article presents solutions for the transient heat and moisture transport due to both disk heat source and cylindrical heat source buried in an unsaturated half space. The solutions are presented in Hankel–Laplace transform domain and in dimensionless style. Coupled effect of thermally driven moisture transport is especially investigated because of its importance to alter the flow field in low-permeability medium. Parametric study has been performed to assess the effects of five independent dimensionless parameters on flow field. The stability and accuracy of the present solutions are demonstrated from the comparison between the results obtained from these solutions and those by using a well-established finite element code CODE_BRIGHT. Despite the simplified assumptions required in order to obtain analytical solutions in Hankel–Laplace transform domain, the results incorporate the main mechanisms involved in the coupled thermo-hydraulic (T-H) problem, and they may be eventually used for validation purposes.