Fig. 3. The tortuosityconnectivity parameter (
) values as a function of the Campbell (1974) b for lysimeter soils (Rønhave, Foulum, and Jyndevad). Three expressions for
(b),
= 2 + 3/b (Burdine, 1953),
= 2 + 5/2b (Mualem, 1976), and
= 1 + 3/b (Alexander and Skaggs, 1986) are given by solid curves. The
= 1 + 0.25b (Moldrup et al., 1998) and
= 1 + 0.05b (Moldrup et al., 2001) are given by broken lines.