v7.32.124 WTNP124 — Liakopoulos test case: Drainage of a water column by the sole force of gravity

Summary:

This test case is the simulation of the Liakopoulos experiment of 1965, which represents the drainage of a column of sand saturated with water. The latter will then desaturate by the force of gravity alone. To represent this, consider a \(1m\) high column subjected to atmospheric gas pressure at the top.

It is a purely hydraulic miscible calculation. The geometry shown corresponds to a vertical bar in vertical positioning. The transfer terms are described by a model by Mualem Van-Genuchten. The problem is treated by the various schemes available for modeling two-phase flows: classical finite elements and Decentralized Edge Finite Volumes.

• 1. Reference problem
  • 1.1. Geometry
  • 1.2. Material properties
  • 1.3. Boundary and initial conditions
  • 1.4. Simulation time
• 2. Modeling A
  • 2.1. Characteristics of modeling
  • 2.2. Results
  • 2.3. Tested values
• 3. B modeling
  • 3.1. Characteristics of B modeling
  • 3.2. Results
  • 3.3. Tested values
• 4. Summary of results