Modeling Rock Joint with Variational Localization Element
Many geological formations, such as rock joints, shear and compaction bands, are several order smaller than the host matrix. Modeling such geological formations can be a challenging task. Below we demonstrate two cases in which two bodies are connected by a rock joint with no permeability (LEFT) and same permeability as the host (RIGHT). In the flow barrier case, we correctly predict a discontinuous pore pressure field while maintaining a continuous traction across the joint. In the permeable case, we compute the location of the streamline in the current configuration of the porous media and analyze how hydraulic properties change in the geometrical nonlinear regime. Note that pore pressure is continuous in the permeable case. Refresh screen if you cannot see the movie.
Stabilized Finite Element Model for Large Deformation Thermo-hydro-mechanics Problems
In this work, we aim to simulate large deformation thermo-hydro-mechanics problem with a single spatial discretization. Due to the lack of combined inf-sup condition, a stabilization scheme is employed. Simulations from standard Galerkin method (LEFT) and stabilized Galerkin method (RIGHT) are compared below. Refresh screen if you cannot see the movie.
Fully Coupled Bulk and Boundary Diffusion
In this work, we formulate a finite element to simulate the fully coupled nature of boundary and bulk diffusion. This type of simulations are often conducted with volume (surface) finite elements coupled with surface (line) finite difference model. Here, our new formulation features a bulk volume finite element model coupled with a plate-like finite element formulated in the parametric spaces and hence provide an elegant and easy way to simulate boundary diffusion in complex geometry.