Theory Of Linear Poroelasticity \) is the pore fluid pressure, \(\alpha\) is Biot's coefficient (typically between 0 and 1), and \(I\) is the identity tensor. **Fluid mass conservation:** 3. \[ \frac{\partial}{\partial t} \left( \alpha \nabla \cdot u + \fra E Earl Gorczany Mar 7, 2026