# 7.6.3.1.15. Van_Genuchten

Syntax

  Capillary Pressure [{of} SpeciesName] = Van_Genuchten [Wetting_Phase = wetting_phase | Beta_Field = beta_field | Pcref_Field = pcref_field | Sgr_Field = sgr_field | Slr_Field = slr_field | Beta = beta | Reference_Capillary_Pressure = reference_capillary_pressure | Residual_Wetting_Phase_Saturation = residual_wetting_phase_saturation | Residual_Nonwetting_Phase_Saturation = residual_nonwetting_phase_saturation]

Scope

  Aria Material

Summary

  A Van Genuchten model for air/water capillary pressure

Parameter | Value | Default
--- | --- | ---
{of} | {of | species | subindex} | –
SpeciesName | string | –
wetting_phase | “string” | WETTING_PHASE
beta_field | “string” | –
pcref_field | “string” | –
sgr_field | “string” | –
slr_field | “string” | –
beta | real | 0
reference_capillary_pressure | real | 0
residual_wetting_phase_saturation | real | 0
residual_nonwetting_phase_saturation | real | 0