# Another question

• To: "David L Parkhurst" <dlpark@xxxxxxxx>
• Subject: Another question
• From: Chicgoua Noubactep <cnoubac@xxxxxxx>
• Date: Tue, 4 Mar 2003 15:47:55 +0100

```Dear David,

primarly aim ist to obtain a consistent input-set, I'll then modify an

The next question, pheraps the last, is also a syntatic question. Is it
possible to get only suitable cells-outpout at the end of the simulation?

In my case:
cells 1-2 - solution 1-2
cells 3-4 - solution 3-4
cells 5-10 - solution 5-10.

Until now, I use to transport the out-pout into Excel and select it (cell
1,2,3...) manually.

Hier again my last version of the job:

TITLE  Rollfront

SOLUTION 0-10 Rainwater
units            mmol/kgw
temp           25.0
pH              7.0     charge
pe               4.0
EQUILIBRIUM_PHASES 0
CO2(g)	-3	10
O2(g)		-0.7	10
Save	Solution 0
END

USE solution 0
EQUILIBRIUM_PHASES 1-2
Schoepite	0.0	0.1
Calcite 	0.0	0.1
Goethite	0.0	0.1
SAVE solution 1-2
END

USE solution 0
EQUILIBRIUM_PHASES 3-4
Schoepite		0.0	0.1
Calcite 		0.0	0.1
Pyrite		0.0	0.1
Goethite		0.0	0.1
SAVE solution 3-4
END

KINETICS 5-10
Organic_C
-formula  CH2O
-tol	1e-8
-m0	1				# mol/kgw
-m	1

RATES
Organic_C
-start
10 if (m <= 0) then goto 200
20  mO2 = mol("O2")
30  mNO3 = tot("N(5)")
40  mSO4 = tot("S(6)")
50   rate = 1.57e-7*mO2/(2.94e-4 + mO2)
60   rate = rate + 1.e-10*mSO4/(1.e-4 + mSO4)
70  moles = rate * m * (m/m0) * time
80 if (moles > m) then moles = m
200 save moles
-end
END

KNOBS
-pe   2
-step       2
-iterations 200
SOLUTION_SPECIES
H2O + .01e- = H2O-0.01
log_k -9

TRANSPORT
-cells  			10
-shifts  		100
-time_step 		86400
-length 			1
-dispersivities   	2.0
-punch_cells 		1 2 3 4 5 6 7 8 9 10
-punch_frequency  		1
#        -stagnant               1      1.056e-10  0.05          0.15

PRINT
-reset 				false
SELECTED_OUTPUT
-file   			Rollfront.csv
-reset  			true
-time				false
-totals 			U S Fe Ca
-pH				true
-pe				true
END

Thank you for any comment.

Sincerely,

Chicgoua

```

Complete Water Resources Division Software