Modeling of Ice Formation in Porous Media
Modeling of Ice Formation in Porous Media
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多孔介质中冰形成的模拟
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
J. Kruschwitz
中科院分区：
文献类型：
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作者：
J. Bluhm;M. Setzer;J. Kruschwitz
基于多孔介质理论（TPM），采用连续介质力学方法，建立了一个描述气液饱和多孔材料冻融过程的简化五元模型。多孔固体由两相组成，即粒状或结构化多孔基质和冰相。液相在大孔中分为本体水，在微孔中分为凝胶水。与本体水相反，凝胶水基本上受固体表面的影响。这种现象已经通过这种水通过均匀成核而冻结的事实而明显。
A simplified quintuple model for the description of freezing and thawing processes in gas and liquid saturated porous materials is investigated by using a continuum mechanical approach based on the Theory of Porous Media (TPM). The porous solid consists of two phases, namely a granular or structured porous matrix and an ice phase. The liquid phase is divided in bulk water in the macro pores and gel water in the micro pores. In contrast to the bulk water the gel water is substantially affected by the surface of the solid. This phenomenon is already apparent by the fact that this water is frozen by homogeneous nucleation.