OGS has been extended to capture soil freezing phenomena. As a first step, only the thermal problem of a fully saturated porous medium is considered. It is a mixture of the three phases:
- Porous phase (the solid)
- Liquid phase (e.g. water)
- Frozen liquid phase (e.g. ice)
In order to obtain effective mixture properties, the MPL was equipped with new property classes such as
The effective (apparent) heat capacity includes the latent heat contribution from the phase change of the liquid/frozen pore phase. The heat conduction process was slightly modified to make use of the effective properties. Then, the thermal problem becomes nonlinear due to temperature-dependent thermal properties.
Feature description was added to the changelog
Both gtests and ctests covering the new properties/features were added.
The new properties and features are documented.