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Can anybody explain the meaning of DELV in GENER?
I'm not very clear about DELV and EX, can anybody help me? thanks very much! sawyer
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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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Question on modeling landfill gas migration
Hi, Which module should I be using if I want to model landfill gas (mainly consisted of methane and carbon dioxide) migration in soil/liquid? I have heard of the EOS7C module,…
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Nonisothermal Co2 Injection using ECO2N convergence issue
I am running a non-isothermal case for Co2 injection using ECO2N. The injection cell temperature is set to be 60 degree compared to reservoir temperature of around 105 degree.…
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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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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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Error in name first ELEM in mesh file
Hi, My model has 120.000 nodes and 320.000 connections was created with Mview. I remove the inactive elements.I get the error message below. There seems to be something wrong with the element naming.…
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TIMAX in INPUT File vs Time written in OUTPUT File (ECO2M)
Hi all, I do not really understand about the case, I set up the TIMAX value in PARAM block of TOUGH2 Input file with 31556952.0 (second) or around 1 year,…
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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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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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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…
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ELEME6 Block?
Hey everyone, I used MESHMaker to create an axisymmetric mesh (RZ2D), and it created an ELEME block with 6-digit character codes (titled ELEME6). Is this due to the number of elements I requested?…
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CO2 mass balance
Hi all, I am experiencing a problem with CO2 mass balance in TOUGH2/ECO2N output. I am not able to figure out the reason behind missing CO2. After a year,…
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Problem with building heterogeneous CO2 storage model
Hi all, I need to build a CO2 storage model with heterogeneous permeability field using TOUGH2/ECO2N. I built a homogeneous model first and it could be ran successfully.…
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Problem initializing a low permeability EOS7C simulation
Hello, I am trying to set up a model with EOS7C, with which I plan to simulate methane generation within a large, low permeability domain over a long period of time.…
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How to choose the module to simulate the Terzaghi's one-dimensional consolidation?
Hi everybody, as stated in the title,i want to simulate Terzaghi's one-dimensional consolidation, but i'm not sure which module of TOUGH2 i should choose, can any body tell me? thanks very much.…
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Gas density in EOS2 is unrealistic(5000kg/m3)
Hello all: I set up a model to simulate CO2 displace water in core by EOS2 module. The inlet is CO2 mass inlet boundary condition, and the outlet is constant pressure boundary condition(10MPa).…
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Temperatures reaching out of range in EOS2 despite no GENER block
Hi all, I am trying to run a model operating at temperatures close to the maximum modelled by TOUGH (360C) due to the system it is based on. Since this is only 13 C cooler than what is achievable by…
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Setting conditions for not boundary blocks
Hello: How can i set a constant temperature condition for not boundary blocks with constant flow? How does it works for a non isothermal case? Thank you for the answers.
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slightly increased liquid viscosity
Hi, dear all I have one question about eos1. To construct a sensitivity matrix 'co' in subroutine 'multi' , we obtain secondary parameters using slightly increased primary variables,…
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Increase maximum number of elements/connections
Hi, I’m trying to increase the maximum number of elements/connections by recompiling the source code ( I’m on a Windows 7 64 bit pc and access gfortran through Cygwin).…
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How to simulate bubble flow in non-Newtonian fluids (such as drilling mud)?
I am trying to create multiple simulation scenarios, one of them is to simulate discrete bubble flow through drilling much, which is also a non-Newtonian fluid.…
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Problems with ECO2N V. 2.0
Hi All, I am experiencing some problems with the latest version of ECO2N. I have a series of simulations that run fine using ECO2N V1.0. However in version 2.…
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ECO2N Steady state
Hi everybody! I'm a new Tough2 ECO2N user and i'm experiencing some problems by reaching the steady state condition... I will use it as Initial conditions for the simulations.…