| Citation: | DAI Qian, YUE Feilong, LI Peichao. Numerical analysis of fully coupled thermoporoelastic behavior of two-dimensional saturated porous media flat plate under LTNE condition[J]. Journal of Shanghai University of Engineering Science, 2022, 36(1): 83-90. doi: 10.12299/jsues.21-0134
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Most of current thermoporoelastic models of porous media are incomplete coupled ones, and the physical models mostly adopt one-dimensional or one-dimensional axisymmetric models. In view of this point, a fully coupled model of a two-dimensional saturated porous media flat plate was presented and the corresponding numerical simulation was carried out. The fully coupled of three physical fields (heat, fluid flow, and solid stress/deformation) were realized by means of strong coupling. The boundary conditiorns were assumed as follows: As for the temperature field and the displacement field, 30 ℃ fluid and solid temperature boundary conditions and fixed displacement boundary conditions were exerted on the left side of the plate, and naturual boundary conditions were prescribed on the other sides of the plate. Meanwhile, 0 Pa pore pressure boundary conditions were loaded around the plate. The numerical solutions of flow field, strain field and two temperature fields were obtained by the PDEs pattern of COMSOL Multiphysics FEA software. Numerical results showed that fluid and solid temperature, strain and pore pressure transfer along the x-axis direction with increasing time, and the strain in the x-direction is much larger than that in the y-direction. In addition, it was found that the maximum values of y-direction strain and pore pressure gradually decrease with time. The presented mathematical model and numerical solutions are of benefit to provide deep insights into the fully thermoporoelastic coupled behavior of two-dimensional saturated porous media.
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