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Boundary conditions
Hi, I am modeling the injection of fluid into a porous domain through a fault. I have a created multiple zones for the domain(sand, shale and fault) and put an injection well at bottom end of the…
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CEC: cation exchange capacity (meq/100 g of solid).
In ToughReact, does the cation exchange capacity have the time vector？Does it represents meq/100 g of solid/s？
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Convergence problem for the surface complexation model
Dear Sir or Madam, Sorry to disturb you. I am Lang. I created a 1D transport model with surface complexation. I found it could not achieve convergence,…
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The difference depending on the position of the well
I am doing simulation of methane gas recovery using TOUGH 2 EWASG. I created a three layer model of paleogene, cap rock, cretaceous in order from the top.…
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Pytough: Grid type TOUGH not supported.
Hi all, This is the first i am using pytough script. I am trying to see the summary of model geometry by using mulgrid in pytough. The Tough2 input file (as you can see in attachment) was generated…
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Theis solution
Dear All, Does anyone have a test file of the Theis problem (such as the one presented in Moridis and Pruess 1995)? Thank you in advance! Virginie
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MINC for general dual porosity modeling
Hello, is it possible/advisable to use MINC for more general analysis of multiple interacting continua, i.e., without fractures? I'd like to model flow through two porous media with different…
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Run a diffusion problem to equilibrium
Hi, I am working on a diffusion problem with a small gradient. The anticipated equilibrium time is ~30000 years. The best simulation time I can get for now is ~1000 years.…
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Modelling the incongruent dissolution
Hi all, I'm trying to simulate CSH(Ca-Si-H2O) dissolution, which is usually considered as an incongruent solubility behavior. I'm thinking how to simulate the reaction of CSH with high Ca/Si ratio…
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Adding multiple restart times for the same event
I noticed that the iT2 command index didn't include any examples of how to incorporate multiple restart times for a single event. It wasn't entirely straightforward for me to troubleshoot,…
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Dirichlet and Robin Boundary problem
Dear Sir or Madam, Sorry to disturb you. I am setting up a very simple 1-D contaminant transport model. And I was wondering if I just apply the boundary water with a injection concentration C0 to…
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Restart option with PetraSim
Hello everybody, There is a procedure for the restart of a though2 run. I interrupted a run of Tough2, I can restart it where it left off? Thanks
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Mass input in .out file
Hi everybody! Could anyone tell me if is it possible to see the CO2 mass input in petrasim output file? I've tried to check it on Volume and Mass-Balances, but it isn't there.…
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Setting Boundary Conditions in Toughreact
Hello All I know how to impose Dirichlet and Neumann conditions for a single column volume like A in my sketch (one dimensional case). In the image, the blue cell represents a injection block.…
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Help me? (EOS3) simulate a two-phase test.
Hi,everyone Right now, i want to simulate water drainage experiment, as first conducted by Liakopoulos(Liakopoulos, A.C., 1965. Transient Flow Through Unsaturated Porous Media.Ph.D. Dissertation.…
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Problem on the number of grid blocks for time evolution > 15
Dear Sir or Madam, I am sorry to disturb you. I wanted to print out 60 grid blocks for time evolution printout. And I just listed all the grid numbers in several lines (15 in every line) in the…
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CO2 injection into a CO2 saturated reservoir
Hi everyone, I'm running a test to check the results regarding to inject CO2 into a reservoir with a CO2 mass fraction=1. SG attached starts at 0 and the value raises with time.…
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Numerical instability with water vapor condensation in ECO2M
Hey everyone, I've run into an issue trying to make the transition from a saturated gas to a 2-phase stream composed of a wetting aqueous phase and a gaseous CO2/H2O(g) mixture.…
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toughreact v3.0 run
Hi all l'm trying to operating toughreact v.3.0 but l have big problem... Why the run t2react button is not active?? l set all the options... thanks
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water table
Hello everyone ! I have some brief questions which I need to find an answer too. I emailed the developers but didn't receive a response in the last week. My questions are as follows: Q1.…
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The discrepancy between numerical solution and analytical solution
Dear Sir of Madam, When I run the simple 1D advection-dispersion model with Kd adsorption, I found there is a difference between the numerical solution and analytical solution.…
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Difference between surface area for sorption and initial mineral reactive surface area
Hi, everyone, I am confused by the concepts of S_AREA (surface area for sorption) and AMIN (initial mineral reactive surface area) If I choose IFLAG=0 and IMFLG=0 and only one mineral for the…
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How to calculate CO2 flow rate from COFT file
Hello, I'm simulating CO2 injection to layered media. I used a COFT function to check the flow rate of CO2 . I input CO2 injection rate at 0.01 kg/s. Attached figure is a part of the COFT file.…
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Concepts of cation exchange, surface complex, inner-sphere and outer-sphere complex
Hello, everyone, I am confused by the concepts of cation exchange, surface complex, inner-sphere and outer-sphere complex now. I found the sorption mechanisms are inner-sphere and outer-sphere…
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Hydrostatic pressure (gravitation equilibrium)
Hello, I'm practicing TOUGH2-ECO2N module with example problem number 4. I want to simulate CO2 injection and its behavior. My model which uses just one formation (first figure) is more simpler than…
