Performance Evaluation of Four-Parameter Models of the Soil-Water Characteristic Curve

Table 1

Parameters of the SWCC models.

Model	P1*	P2**
Brooks and Corey (BC)	ℎ𝑏	𝜆
Van Genuchten (VG)	𝛼	𝑛
Kosugi (LN)	ℎ𝑚	𝜎
Modified Gardner (MG)	𝑏	𝑛

∗P1 has a unit of suction (kPa).
∗∗P2 is a dimensionless parameter.