IRP=40 Table lookup

The calculation for relative permeabilities is by table lookup and interpolation. The table input is through input Record ROCKS.1.4.

If the user wishes to employ other relative permeability relationships, these need to be programmed into subroutine RELP in module HydraulicAndThermal_Properties（media_Properties.f90）. The routine has the following structure:

 SUBROUTINE RELP(SATU,RELPERM,NMAT,USRX)
                ...
              RELP_FUNCTION: SELECT CASE (IRP(NMAT))
			CASE (1)
				CALL RELP_LINEAR(...)
			CASE (2)
				...
			...
			...
		    END SELECT RELP_FUNCTION

            END

To code an additional relative permeability function, the user needs to insert a code segment analogous to that shown above, beginning with a CASE option which would be identical to IRP and calls a subroutine for the additional relative permeability function.