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A Review on Coupled Heat and Water Vapour Transport in Unsaturated Soils

机译:非饱和土壤热与水蒸汽耦合运移研究进展

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Coupled heat and water transport has found to be relevant in unsaturated soils because of increasing interest in disposal of radioactive wastes, geothermal energy, hydrology and agricultural problems. In an unsaturated soil, heat can be either latent or sensible or both and water may take the form of either liquid or vapour or both. The impact of thermal gradient on water vapour movement in terms of both vapour and liquid flow is essential and it requires accurate experimental quantification and representation for modeling of coupled heat and water vapour flow. Although it is possible to calculate the total water vapour flux, it is difficult to distinguish experimentally between liquid and vapour fluxes in unsaturated soils. This paper focuses on providing a critical review on heat and water vapour transport in unsaturated soils.
机译:由于对放射性废物的处置,地热能,水文学和农业问题的兴趣日益浓厚,热与水的耦合运输在非饱和土壤中显得尤为重要。在不饱和土壤中,热量可以是潜热的或显热的,或两者兼而有之,而水的形式可以是液体,蒸气或两者兼而有之。热梯度对水蒸气在水蒸气和液体流方面的运动的影响至关重要,并且它需要精确的实验量化和表示,以对热和水蒸气耦合流动进行建模。尽管可以计算出总的水蒸气通量,但在实验上很难区分非饱和土壤中的液体和蒸气通量。本文的重点是对非饱和土壤中的热和水蒸气传输进行批判性的综述。

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