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Graphs in Transport Problems (Zero Concentration)
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Topic: Graphs in Transport Problems (Zero Concentration) (Read 766 times)
olivertheseira
Contributor
Posts: 3
Graphs in Transport Problems (Zero Concentration)
«
on:
October 28, 2015, 04:24:45 PM »
Hi,
I am a new user currently conducting geochemical modeling of CO2 sequestration in the cap rock of a certain formation. My graph of Calcite Concentration vs. Distance is showing zero concentration across the entire transport distance of 10 m. Can anyone tell me what my problem is based on my code below?
EQUILIBRIUM_PHASES 1 Carbonate assemblage
CO2(g) -2.1
Dolomite 0.0 32.5
Calcite 0.0 39.0
Siderite 0.0 0.9
USER_GRAPH 1 Calcite Concentration vs. Distance from Aquifer Interface
-axis_titles "Distance from aquifer interface (m)" "Calcite concentration (mol/L)"
-initial_solutions true
-axis_scale x_axis
-axis_scale y_axis
-connect_simulations true
-plot_concentration_vs x
10 graph_x DIST
20 graph_y TOT("Calcite")
TRANSPORT
-cells 10
-shifts 100
-time_step 100 year
-flow_direction diffusion_only
-boundary_conditions constant closed
-lengths 10*1.0
-dispersivities 0
-correct_disp false
-diffusion_coefficient 3.33e-10
-stagnant 0
-initial_time 0
-print_cells 1-10
-print_frequency 100
-warnings true
-multi_D false
-interlayer_D false
KINETICS 1
Calcite
-formula
-m 39
-m0 39
-parms 1.67e5 0.6 # cm^2/mol calcite, exp factor
-tol 1e-8
END
Thanks in advance,
Oliver Theseira
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dlparkhurst
Top Contributor
Posts: 1034
Re: Graphs in Transport Problems (Zero Concentration)
«
Reply #1 on:
October 28, 2015, 07:39:08 PM »
Check the definition of the TOT and EQUI functions in The Basic Interpreter section of the manual.
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Graphs in Transport Problems (Zero Concentration)