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Can we used a Neumann boundary condition for temperature simulation in TOUGH2?
If I know the heat flux (18 W/m^2), should I use the Neumann boundary condition? can I use it in TOUGH2? Thanks
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methane leak and plume migration in subsurface from hydrocarbon wellbores
Hi There, I would like to know what module would be best to simulate methane leakage and plume migration in the subsurface from hydrocarbon wellbores? I did some digging and came across some…
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General question about Capillary Pressure
In terms of flow I still struggle to understand the reasons/use of having capillary pressure as an option in ROCKS. How different is flow when it is disabled?…
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Partitioning Tracer-EOS7C
Hi, I have two question 1- Regarding temperature dependency of Henry's coefficient, I was wondering if TOUGH2/EOS7C considers this or not? and if yes, at what reference temperature should HCTRC…
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How to switch between injection well to production well (time dependent)
Hi, Everyone, I am a PhD student. I need some urgent help in the TOUGH2. I wan to switch the well properties between the injection well and the production well during the simulation.…
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Fortran runtime error!!
Hi, I am running a model with EOS7C on UNIX. The code seems working with no convergence error. But, I always get: Fortran runtime error: Expected REAL for item 14 in formatted transfer,…
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How to define heterogeneity in TOUGH2-ECO2N
Hi I am a new TOUGH user. I am interested in learning about defining fluid injection models with TOUGH2. I would like to learn about building heterogeneous models - which Kx and Ky differ from one…
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ECO2N, Model initial temperature distribution
Dear all members, Hi, I'm working on thermal injection simulation in TOUGH2 and I want to define an initial temperature distribution for my model. After program execution (ECO2N),…
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Enthalpy Discrepancy
Hello There, I was just wondering what the reference state for the enthalpy of water in TOUGH2 is? The reason is I would like to define water infiltration (precipitation) with a temperature of 20˚C.…
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Non convergence when considering non-isothermal or molecular diffusion in TOUGH2 ECO2N
I am using TOUGHREACT V3.32 to model CO2 injection in a radial 2D mesh with different layers in the z-direction. Before running the reaction part of the problem I wanted to test the flow part was…
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Setting permeability anisotropy with Voronoi elements
I'm trying to define proper permeability values for each connection in my Voronoi mesh file. Essentially, my PER(1) and PER(2) values are constant and equal to one another,…
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Convergence becomes difficult after CO2 breakthrough (ECO2N)
Hi, I want to know why the convergence becomes difficult (so the time step becomes very small, or simulation terminates) near or after phase breakthrough.…
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Polygonal mesh model runs much slower than regular mesh
I'm running CO2 injection with regular and polygonal mesh model, polygonal mesh even has less elements than regular mesh cause of number of connections limitation,…
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Instant release EOS7R
Hello everybody, To simulate an instant release of a radionuclide in eos7r, we have to insert a no-zero value of the component in the INCON block. This value should be the mass fraction of the…
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Permeability Modification option EOS7R
Hello everyone, Please, does anyone know if the permeability modification option may be used in EOS7R?
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Calculating Total Density from TOUGH2/ECO2M Output file
Dear all, I am sorry maybe this is a simple questions, but I need to know it. When I run injection CO2 with eco2m module for my model with initial conditions as follow :…
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Implementing meteoric recharge into atmospheric boundary condition?
Hi all, Does anyone have a recommended method for specifying different rates of meteoric recharge to TOUGH2 models? Would specifying different air:water ratios in the atmospheric block work? Thanks,…
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use of MINC file in subsequent simulations
Dear all, I want to create a MINC file and use it in subsequent flow simulations. However, if I put the MESH and MINC file in the relevant folder, the simulation only uses the MESH file.…
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Suppress CO2 dissolution in TOUGH2
Hello all, I am trying to suppress CO2 dissolution in TOUGH2 (set CO2 solubility in brine as 0) to investigate how big the impact that CO2 dissolution can have on CO2 plume migration.…
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Time stepping in dry-out zones
Hello all, I know it is a general question, but any hint will be appreciated. I am running a 3D model of CO2 injection into a layered aquifer using the ECO2N module.…
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Water column above soil for infiltration processes
Dear Stefan, I investigate infiltration processes to look after the most effective one for a specific area. For that reason I would like not only to change the infiltration beginning and ending but…
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Defining ِDirichlet / Neumann boundary conditions in ECO2N
Hello I am trying to define different types of boundary conditions in TOUGH2 with ECO2N module to see the effect of B.C on the simulation. I think the TOUGH2 code simulates Neumann conditions by…
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Defining a set of grid block boundaries in radial direction in TOUGH2-ECO2M
Dear all, I am trying to define several radial distances in my model domain to see the brine influx and gas saturation at several radial boundaries around the injection well.…
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ECO2M running stopped, unit temperature and pressure status abnormal
Dear TOUGH community users, The model is established using Ansys apdl starting from 0 m, with the first unit below the surfacecenter serving as the wellhead unit.…
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Printout problem with TIMES
I want to use DELAF function in TIMES, but no matter how I assign the value, the printout in FOFT won't change. Is there any format error in my input file?