v7.32.107 WTNP107 — Modeling the drying of a concrete bar with different sorption isotherms

Summary:

This test represents modeling THM of the drying and heating of a concrete bar. The primary objective of this test is to verify the correct consideration of several sorption isotherms as a function of temperature. In addition, this test is representative of realistic drying behavior.

The initial saturation of the material is 0.98. A relative humidity of 70% is applied to one edge of the sample as well as a temperature of 60° C. and a gas pressure of 5 bar. Isothermal laws come from the literature [1, 2, 3].

• 1. Reference problem
  • 1.1. Geometry
  • 1.2. Material properties
  • 1.3. Only the properties on which the solution depends are given here, knowing that the command file contains other material data that ultimately does not play a role in the solution of the problem. The modeling is purely thermo-hydraulic (there is no role for mechanics).
  • 1.4. The sorption isotherms are explained after this table as is the relative permeability to the liquid.
  • 1.5. Boundary conditions and loads
  • 1.6. Initial conditions
• 2. Benchmark solution
  • 2.1. This is a case of non-regression. We will just make sure that the isotherm is correctly taken into account.
• 3. Modeling A
  • 3.1. Characteristics of modeling A
  • 3.2. Result of modeling A
• 4. B modeling
  • 4.1. Characteristics of B modeling
  • 4.2. Result of modeling B
• 5. C modeling
  • 5.1. Characteristics of C modeling
  • 5.2. Result of the C modeling
• 6. Bibliographical references