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Pore-scale modeling of fluid-particles interaction and emerging poromechanical effects

Abstract : A micro‐hydromechanical model for granular materials is presented. It combines the discrete element method for the modeling of the solid phase and a pore‐scale finite volume formulation for the flow of an incompressible pore fluid. The coupling equations are derived and contrasted against the equations of conventional poroelasticity. An analogy is found between the discrete element method pore‐scale finite volume coupling and Biot's theory in the limit case of incompressible phases. The simulation of an oedometer test validates the coupling scheme and demonstrates the ability of the model to capture strong poromechanical effects. A detailed analysis of microscale strain and stress confirms the analogy with poroelasticity. An immersed deposition problem is finally simulated and shows the potential of the method to handle phase transitions.
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Contributeur : Robert Peyroux <>
Soumis le : jeudi 13 décembre 2018 - 13:21:21
Dernière modification le : lundi 14 septembre 2020 - 08:44:05

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Emanuele Catalano, Bruno Chareyre, Eric Barthélemy. Pore-scale modeling of fluid-particles interaction and emerging poromechanical effects. International Journal for Numerical and Analytical Methods in Geomechanics, Wiley, 2014, 38 (1), pp.51-71. ⟨10.1002/nag.2198⟩. ⟨hal-01953937⟩



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