Pressure scaling parameter with units of pressure.

Corresponds to van Genuchten parameter \(\rho g / alpha\). The inverse of \(\alpha\) "corresponds to the water contents lower then saturation" [1].

[1] van Lier, Quirijn de Jong, and Everton Alves Rodrigues Pinheiro. "An alert regarding a common misinterpretation of the van Genuchten α parameter." Revista Brasileira de Ciência do Solo 42 (2018).

Additional info

From MaterialLib/MPL/Properties/CapillaryPressureSaturation/CreateSaturationVanGenuchten.cpp line 55

This is a required parameter.
Data type: double
Expanded tag path: NONEXISTENT.property.SaturationVanGenuchten.p_b
Go to source code: → ogs/ogs/master

Used in the following test data files

Used in no end-to-end test cases.