Appendix
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11 Appendix
11.1
Parameter list
11.1.1 Input
Geometric variables:
V [cm] FLOAT
Soil sample volume
z
1
[cm] FLOAT
Height of Tensiometer 1 (over bottom of soil
sample)
z
2
[cm] FLOAT
Height of Tensiometer 2 (over bottom of soil
sample)
L [cm] FLOAT
Length of the soil sample
For generating data points:
INTERPOL INTEGER
Type of data interpolation: 0: polynomial; 1:
partially linear; 2: hermitical spline)
nbt INTEGER
Max. number of data points for the hydraulic
function
OPTIMI LOGICAL
If TRUE, then optimization is executed, if
FALSE only data points are generated
NDEG INTEGER
If INTERPOL = 0, then order of the polynomial
Measuring inaccuracy:
σ
h
[cm] FLOAT
Measuring error of the potential (standard
deviation)
σ
w
[g] FLOAT
Measuring error of the weight (standard
deviation)
For parameter estimation:
CODE INTEGER
Type of model
10: van Genuchten/Mualem
11: van Genuchten/Mualem bimodal
20: Brooks/Corey)
INIT FLOAT (vector)
Start up estimation of parameters, respectively
the fix value if parameter x should not be
estimated
OPTP LOGICAL (vector)
Indicator if parameter x should be optimized or
not
IN_MAXOPTIT INTEGER
Obsolete! Must always be 1!
W_DEV FLOAT
Obsolete! Not condsidered
IN_WEIGHTFLAG
LOGICAL
If TRUE then both hydraulic functions are
automatically rated as described in chapter „Fit
of parametric expressions to the
θ
(h) and K(h)
