Posted Fri, 08 Dec 2017 05:02:53 GMT by Alex Costall PhD Student
I've been reading the Van Genuchten parameters, and it seems like S_s is set to (usually) the porosity of the medium.

e.g. Sand, S_s  = 0.43, S_r = 0.045

The online FEFLOW help has default parameters of S_s = 1 and S_r = 0.0025


Does the FEFLOW value account for porosity, or how does it actually work...?
Posted Fri, 08 Dec 2017 07:14:28 GMT by Denim Umeshkumar Anajwala
It is important to note that FEFLOW references Ss and Sr as saturation, not as water content. Thus completely filled pores correspond to a value of 1 rather than the porosity. This is why Ss is 1 by default. FEFLOW accounts for porosity internally.

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