Abstract
AbstractIn this article, a quadruple macroscopic model for the simulation of freeze‐thaw cycles in liquid‐ and gas filled porous media is presented. Attention is paid to the description of capillary effects and phase transition. In effect, this model describes the following aspects: expansion of ice during freezing, liquid and gas pressure on the surrounding surfaces, capillary effects, temperature distribution, and the influence of filter velocities. The illustrated results of the numerical example show that the simplified model is capable of predicting physical and experimental observations. Besides the influence of heat of fusion, especially, capillary suction as well as frost suction in liquid‐ and gas filled porous media under cycling thermal loading will be presented. (© 2011 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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