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Transport in Porous Media, Vol.67, No.2, 171-187, 2007
Analysis of wet pressing of paper: The three-phase model. Part II: Compressible air case
In this study we consider a model of wet pressing of paper. We use the techniques and results from the first part of this paper, where a simplified model is studied in details. The model is, using suitable transformation, rewritten in the standard parabolic-hyperbolic form. Numerical solution for typical example is given and the effects of plastic deformations of paper are investigated. Finally, the model is employed to adres the problem of choosing an optimal pressing regime.
Keywords:paper pressing;compressible air;parabolic-hyperbolic system;cross conditions;elastic and plastic deformations;upwind method