Van Genuchten SWCC Parameters

GiD Plus (Modules) CODE_BRIGHT
1

Hello,

I noticed that the exponents for the Van Genuchten equation in the code_bright users manual is switched. Rather than Se = (1+((Pg-Pl)/P)^lamda)^-(1-1/lamda), it shows (1+((Pg-Pl)/P)^(1-1/lamda))^-lamda. The equations are not equal. Is there a reference you can give me that shows the equation this way? All the references I have show that the first equation is the Van Genuchten equation.

Best,
Melia

2

Hi Melia,

You can look for reference in Olivella, S., J. Carrera, A. Gens, E. E. Alonso. (1996) Porosity Variations in Saline Media
Caused by Temperature Gradients Coupled to Multiphase Flow and
Dissolution/Precipitation. Transport in Porous Media, 25:1-25.

Regards,

Alfonso