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Modeling drying process of saturated clay and drying shrinkages. Iranian Journal of Ceramic Science & Engineering 2014; 3 (1)
URL: http://ijcse.ir/article-1-178-en.html
Abstract:   (3858 Views)

Shrinkage phenomenon of ceramic materials is a complicated phenomenon. The shrinkage is involved with simultaneous changes in temperature, pressure, and moisture during drying. The current work describes a finite element model developed to simultaneously take into consideration heat and mass transfer, momentum transfer, and strain to evaluate drying-induced stresses of clay. By employing these equations it is necessary to develop a model to describe the drying process of porous media and its associated effects including stress and shrinkage for each phase. In the first phase of drying the water movement is defined by Darcy’s law, in which the water movement is due to pressure gradient. The equations of conservation of momentum, deformation and stress are calculated for each phase. Experimental tests were performed to determine the model parameters required in modeling. The model is solved by finite element and the results obtained were compared with the experimental drying curves. The experiments were performed at three different drying temperature levels, the results of which are reported.

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Type of Study: Applicable | Subject: Bioceramics
Received: 2014/05/5 | Accepted: 2014/07/20

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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.