Modeling fluid saturated porous media under frost attack

Modeling fluid saturated porous media under frost attack
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模拟霜冻作用下的流体饱和多孔介质

DOI:
10.1002/gamm.201010004
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期刊:
GAMM‐Mitteilungen
影响因子:
--
通讯作者:
Ricken
Ricken
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作者:
Ricken

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冻融是土木工程中的重要过程。一方面,多孔建筑材料如道路路面和混凝土在周期性冻结地区的冻害是众所周知的。另一方面,人工冻结技术被广泛应用于非粘性土壤中的隧道和其他地下建筑,以及保护开挖和污染区域的分区。多孔介质中冰的形成是热和质量耦合输运的结果,并伴随着冰的膨胀。体积在空间和时间上的增加归因于多孔固体内部移动的冻结锋。本文在多孔介质理论(TPM)的框架内,针对相变的描述,提出了一个宏观三元模型。对于冰与水之间的质量交换,采用了基于热流矢量局部平衡的演化方程。举例说明了热载荷下饱和多孔固体模型的应用(©2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Freezing and thawing are important processes in civil engineering. On the one hand frost damage of porous building materials like road pavements and concrete in regions with periodical freezing is well known. On the other hand, artificial freezing techniques are widely used, e.g. for tunneling in non‐cohesive soils and other underground constructions as well as for the protection of excavation and compartmentalization of contaminated tracts. Ice formation in porous media results from a coupled heat and mass transport and is accompanied by the ice expansion. The volume increase in space and time is assigned to the moving freezing front inside the porous solid. In this paper, a macroscopic ternary model is presented within the framework of the Theory of Porous Media (TPM) in view of the description of phase transition. For the mass exchange between ice and water an evolution equation based on the local balance of the heat flux vector is used. Examples illustrate the application of the model for saturated porous solids under thermal loading (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Fest-Flüssig-Phasenübergängen bei der Hochdruckbehandlung 的数字模拟
DOI: --
发表时间: 2004
期刊:
影响因子: --
作者:
Wojciech Kowalczyk
通讯作者: Wojciech Kowalczyk
多孔介质中冰形成的模拟
DOI: --
发表时间: 2005
期刊:
影响因子: --
作者:
J. Bluhm;M. Setzer;J. Kruschwitz
通讯作者: J. Kruschwitz
毛细管多孔介质中的多相流
DOI: --
发表时间: 2003
期刊:
影响因子: --
作者:
T. Ricken;R. Boer
通讯作者: R. Boer