v7.31.113 WTNV113 — Gravity flow in a saturated porous medium

Summary:

This test consists in studying the influence of a gravity flow on the distribution of the pressure of the fluid in the saturated medium. It is an evolving problem. The hydraulic behavior of a porous medium saturated by a single liquid is studied

Eleven models are carried out: four two-dimensional models (models A, B: elements HM_DPQ8, models E, F: elements THM_DPQ8) and seven three-dimensional models (models C and D: elements HM_HEXA20, models G and H: elements, models G and H: elements, G and H: elements, G and H: elements, elements, E, F: elements) and seven three-dimensional models (models C and D: elements, G and H: elements, models G and H: elements, G and H: elements), elements THM_HEXA20, I: THM_HEXA20D and J: THM_HEXA20S, K: THM_HEXA20S_DIL)

The distinction between models A and B (respectively C and D, E and F, G and H) lies in the law of fluid behavior.

The I and J models are variants in selective and lumped modeling of G, they have results that differ from the proposed analytical solution (the integration is different), and are therefore non-regressive.

K modeling aims to verify the use of the second 3D gradient model_ THMS (similar to J modeling). So it’s a non-regression test.

The reference solution is one-dimensional because it only depends on the vertical coordinate.

• 1. Reference problem
  • 1.1. Presentation
  • 1.2. Geometry
  • 1.3. Material properties
  • 1.4. Boundary conditions and loads
  • 1.5. Initial conditions
• 2. Benchmark solution
  • 2.1. Calculation method used for the reference solution
  • 2.2. Reference quantity
  • 2.3. Uncertainties
• 3. Modeling A
  • 3.1. Characteristics of modeling A
  • 3.2. Tested sizes and results
• 4. B modeling
  • 4.1. Characteristics of B modeling
  • 4.2. Tested sizes and results
  • 4.3. notes
• 5. C modeling
  • 5.1. Characteristics of C modeling
  • 5.2. Tested sizes and results
• 6. D modeling
  • 6.1. Characteristics of modeling D
  • 6.2. Tested sizes and results
  • 6.3. notes
• 7. E modeling
  • 7.1. Characteristics of modeling E
  • 7.2. Tested sizes and results
• 8. F modeling
  • 8.1. Characteristics of F modeling
  • 8.2. Tested sizes and results
  • 8.3. notes
• 9. G modeling
  • 9.1. Characteristics of G modeling
  • 9.2. Tested sizes and results
• 10. H modeling
  • 10.1. Characteristics of H modeling
  • 10.2. Tested sizes and results
  • 10.3. notes
• 11. Modeling I
  • 11.1. Characteristics of modeling I
  • 11.2. Tested sizes and results
• 12. J modeling
  • 12.1. Characteristics of J modeling
  • 12.2. Tested sizes and results
• 13. K modeling
  • 13.1. Characteristics of J modeling
  • 13.2. Tested sizes and results
• 14. Summary of results