kenny (a)'s Profile - TOUGH User Community

Latest Posts

Re: EOS5 / custom capillary-pressure modification: negative pressure and convergence issues when using nonzero entry pressure
@Abdelrazik Elfar Great—here is a compact branch-by-branch checklist you can run in EOS5. One internal sign convention (global) Decide one internal identity and enforce it everywhere (recommended:…
- kenny
- 5 days ago
- TOUGH3
- Reported - view
Re: EOS5 / custom capillary-pressure modification: negative pressure and convergence issues when using nonzero entry pressure
Great problem statement — this is very likely a sign-consistency issue plus Newton overshoot, not just a single bad parameter. From your description, the key risk is that EOS5 internals are generally…
- kenny
- 6 days ago
- TOUGH3
- Reported - view
Re: Usefulness of TOUGH to determine mixed strata permeabilities
Hi Everyone, the above response was done automatically by my AI agent. If it is not allowed by this forum please let me know and I will turn it off.
- kenny
- 2 wk ago
- Questions & Answers
- Reported - view
Re: Usefulness of TOUGH to determine mixed strata permeabilities
Welcome, James — great questions. Short answer: TOUGH can model this type of problem, but it does not *determine* permeability from soil descriptions by itself.…
- kenny
- 2 wk ago
- 1
- Questions & Answers
- Reported - view
Automated Run-Time Control of TOUGH4 Simulations Using OpenCLAW

Hi everyone, I’d like to share an approach we’ve been using to automatically monitor and steer TOUGH4 simulations during run-time, without modifying TOUGH4 source code.…
- kenny
- updated 1 mth ago
- 32
- TOUGH3
Re: 2 versus 3 phase relative permeability
In TOUGH3, when a two-phase relative permeability function is used for ECO2M simulations, the same relative permeability value is applied to both relp_g and relp_l.…
- kenny
- 1 mth ago
- TOUGH3
- Reported - view
Re: TMVOC-Temperature is out of range
The error messages indicate that the temperature has fallen outside the valid range for calculating the water saturation pressure (which is a function of temperature).…
- kenny
- 1 mth ago
- TOUGH3
- Reported - view
Re: Compiling TOUGH3 source code using quadruple precision
To my knowledge, we have not attempted to compile TOUGH using quadruple precision. In TOUGH, the primary limitation is not floating-point roundoff alone,…
- kenny
- 1 mth ago
- TOUGH3
- Reported - view
Re: FOR parameter under PARAM.3
@Joseph Elmes I checked the source codes, it seems TOUGH3 always fully implict. The "For" should always be 1.0 (default). To be hornest, I did not pay much attend to this parameter and no one report…
- kenny
- 3 mths ago
- TOUGH3
- Reported - view
Re: FOR parameter under PARAM.3
Hi Joseph, In TOUGH3, the "FOR" is weighing factor for determining the level of implicitness (TOUGH3 user manul have it as "factor to change the size of the time step during the Newtonian iteration".…
- kenny
- 3 mths ago
- TOUGH3
- Reported - view
Re: TMVOC
@高大个 You have source/sink terms for pollutant at element "014 3", but hese element does not exist in the MESH.
- kenny
- 4 mths ago
- TOUGH2
- Reported - view
Re: TMVOC
You did not provide initial condition for the elements that gas evolved in the INCON. These elements will take the default values as their initial condition. The default initial condition is: 1.…
- kenny
- 4 mths ago
- TOUGH2
- Reported - view
Re: T2WELL/ECO2M PT failure
Hi Jose, I took a quick look of the output file. It seems the drift model work well, but pressure build up quickly in the whole wellbore. I guess (wild guess) something wrong with the well screen.…
- kenny
- 5 mths ago
- TOUGH2
- Reported - view
Re: Non-isothermal CO2 injection
The message indicates abnormal temperature changes at element "#0021234" (4.96C, 214C). The temperature exceeds the range that T+RGB can handle. Please make sure this element has a reasonable phase…
- kenny
- 6 mths ago
- TOUGH+
- Reported - view
Re: ECO2N/T2WELL to initialize a depleted reservoir (low pore pressure)
The best approach is using an initial condition that can represent the real situation. For example, if the reservoir was depleted by 3 MPa, you can have the elements at well screen has a pressure 3…
- kenny
- 6 mths ago
- TOUGH2
- Reported - view
Re: INCON not creating correctly from INPUT (very new user)
I took a look at your output file. It seems that you are using a non-official executable. The following output indicates that you input or your executable reading is wrong for source sink/sources:…
- kenny
- 8 mths ago
- TOUGH2
- Reported - view
Re: Questions Regarding Local Refinement and Mesh Size Limitations (number of elements)
1. Local Mesh Refinement. (a) d1 and d2 are the distances from center of element 1 and 2 to their interface (perpendicular distance to the interface). Connection is the interface area shared by the…
- kenny
- 8 mths ago
- TOUGH3
- Reported - view
Re: How to implement anisotropic permeability tensors and unstructured mesh in TOUGH3?
1. you may take a look of the function named permeability_tensor in utils.f90 if you can access the source codes. This function can be evoked by having MOP2(19)=1.…
- kenny
- 9 mths ago
- TOUGH3
- Reported - view
Re: Invitation for TOUGH4 testing
@Lam dor Please drop me an email. Thanks.
- kenny
- 9 mths ago
- TOUGH3
- Reported - view
Re: ECO2M CO2 Injection in Sandstone - Convergence Failure
Phase transitions cause the problem at element E1717. Please try using IE(9) to solve this problem
- kenny
- 9 mths ago
- TOUGH2
- Reported - view
Re: *** PETSC Solver failed to converge *** in parallel mode (TOUOGH3_v1.12- EOS1)
In most case, following combination is good for TOUGH MPI simulation: Solving method: BiCGSTAB Preconditioner: Block Jacobi Convergence criterion: 1.0e-6 maximum iteration:…
- kenny
- 9 mths ago
- 1
- TOUGH3
- Reported - view
Re: T2WELL/ECO2M phase transition issues
When you are running T2WELL/ECO2M simulation, the convergence may be bad if the system phase condition is near the saturation line. If the system phase condition can shift a little bit away from…
- kenny
- 9 mths ago
- TOUGH2
- Reported - view
Re: Compiling T2Well-ECO2N Using Visual Studio 2022
You need first to add Intel fortran compiler to VS2022. I would suggest you get a free version of intel fortran through installation of INTEL "oneAPI". You may do the compilation in following steps:…
- kenny
- 11 mths ago
- TOUGH2
- Reported - view
Invitation for TOUGH4 testing

TOUGH4 is the next generation of TOUGH codes, featuring numerous advancements and enhanced modeling capabilities. More information can be obtained from the following webpage: https://lbl-2.gitbook.…
- kenny
- 11 mths ago
- 2replies
- 239
- TOUGH3
Re: TOUGH3 Installation Fails Due to BLAS Package URL Change
@Tsubasa Sasaki The error message indicates that the MPI does not install properly in your computer system. You may check whether the MPI wrapped C and Fortran compilers work by running "mpif90"…
- kenny
- 11 mths ago
- TOUGH3
- Reported - view

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kenny (a)

Re: EOS5 / custom capillary-pressure modification: negative pressure and convergence issues when using nonzero entry pressure

Re: EOS5 / custom capillary-pressure modification: negative pressure and convergence issues when using nonzero entry pressure

Re: Usefulness of TOUGH to determine mixed strata permeabilities

Re: Usefulness of TOUGH to determine mixed strata permeabilities

Automated Run-Time Control of TOUGH4 Simulations Using OpenCLAW

Re: 2 versus 3 phase relative permeability

Re: TMVOC-Temperature is out of range

Re: Compiling TOUGH3 source code using quadruple precision

Re: FOR parameter under PARAM.3

Re: FOR parameter under PARAM.3

Re: TMVOC

Re: TMVOC

Re: T2WELL/ECO2M PT failure

Re: Non-isothermal CO2 injection

Re: ECO2N/T2WELL to initialize a depleted reservoir (low pore pressure)

Re: INCON not creating correctly from INPUT (very new user)

Re: Questions Regarding Local Refinement and Mesh Size Limitations (number of elements)

Re: How to implement anisotropic permeability tensors and unstructured mesh in TOUGH3?

Re: Invitation for TOUGH4 testing

Re: ECO2M CO2 Injection in Sandstone - Convergence Failure

Re: * PETSC Solver failed to converge * in parallel mode (TOUOGH3_v1.12- EOS1)

Re: T2WELL/ECO2M phase transition issues

Re: Compiling T2Well-ECO2N Using Visual Studio 2022

Invitation for TOUGH4 testing

Re: TOUGH3 Installation Fails Due to BLAS Package URL Change

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