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MPL Freezing for Heat conduction with phase change

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Merged Christian Silbermann requested to merge cbsilver/ogs:MPL_Freezing_T into master May 19, 2022
  • Overview 36
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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

  • TemperatureDependentFraction
  • VolumeFractionAverage
  • SpecificHeatCapacityWithLatentHeat

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.

  1. Feature description was added to the changelog
  2. Both gtests and ctests covering the new properties/features were added.
  3. The new properties and features are documented.
Edited Jun 09, 2022 by Lars Bilke
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Source branch: MPL_Freezing_T