7.6.3.1.1. Brooks_Corey

Syntax

Capillary Pressure [{of} SpeciesName] = Brooks_Corey [Wetting_Phase = wetting_phase]

Scope

Aria Material

Summary

Capillary pressure computed based on the Brooks-Corey model

Description

Residual saturations for liquid and gas are $S_{lr}$ and $S_{gr}$ .

Hence the maximum possible liquid saturation is $S_{lm} = 1 - S_{gr}$ and the effective saturation is $S_{e} = (S_{l}-S_{lr}) / (S_{lm}-S_{lr})$ where $S_{l}$ is the wetting phase saturation. The pore size distribution index for the media is $\lambda$ .

Using a cutoff saturation $S_{ec}=0.01$ and if $S_{e} < S_{ec}$ let ${S}_{e} = S_{ec}$ . The capillary pressure is evaluated as $p_{c} = p_{e} {S}_{e}^{-1/\lambda}$ where $p_{e}$ is the entry pressure.

Parameter	Value	Default
{of}	{of \| species \| subindex}	–
SpeciesName	string	–
wetting_phase	“string”	WETTING_PHASE