Attribute: KOMP (nodewise) [m²/N] (only 3D models)

The compressibility of the entire system, consisting of matrix and fluid, can be set with the attribute KOMP. If the attribute KOMP is not defined in the model file, the matrix (α)- and fluid (β) compressibility that are entered in the input dialog of the transient calculation are considered. The formula for the compressibility is:

KOMP = (1-n)*matrix compressibility + n*fluid compressibility, with n = porosity