A Thermo-Hydro-Mechanics Bidirectional Coupling Mathematical Model for Drying of Biological Porous Medium |
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| Authors: | T Lu H L Wang P X Jiang |
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| Affiliation: | 1. College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing, Chinalikesurge@sina.com;3. College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing, China;4. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing, China |
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| Abstract: | Based on Fickian diffusion theory, Fourier's law of heat conduction and thermoelasticity mechanics, a thermo-hydro-mechanics bidirectional coupling mathematical model has been developed to simulate the hot air convective drying of biological porous media. The transient model, composed of a system of partial differential equations, was solved by finite difference methods. The numerical results were compared with available experimental data obtained during the drying of potatoes. The numerical results obtained using the mathematical model were in good agreement with the experimental data. Numerical simulations of the drying curve variations and the spatio-temporal distributions of moisture, temperature, and drying stresses and strains were evaluated. |
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| Keywords: | Biological porous medium Drying Heat and mass transfer Mathematical modeling |
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