Numerical Simulation as a Tool to Improve Subsurface Flow
91
Figure 7 shows the measured and simulated pressure potential in 10 cm depth.
The fitted parameter set matches the measured pressure potential data whereas for
the literature parameter set the simulated pressure potentials were too low.
60
-
'c 50
.~
E40
.....
CD
- e 30
~
0
:: 20
c
CD
::::I
E 10
CD
0
0
--effluent flow rate (sim. - fitted parameters)
o effluent flow rate (measured)
- ~- . effluent flow rate (sim. -literature parameters)
- - - - - - - - - - - - - - - - - - - - - - - - - - - -I
2
3
4
5
6
time after feeding [h)
Fig. 3. Measured and simulated effluent flow rate for a single feeding of 10 I (daily
hydraulic load 40 I)
12~----------------------------------------~
_10
;::.
- c CD
::::I
\i
~
~
8
6
"3 4
E
::::I
U
2
--cumulative effluent (sim. - fitted parameters)
A cumulative effluent (measured)
-* . cumulative effluent (sim. -literature parameters)
O"~---,-------,------,------,------,-----~
o
2
3
4
time after feeding [h)
5
6
Fig. 4. Measured and simulated cumulative effluent for a single feeding of 10 1
(daily hydraulic load 40 1)