Christine Doughty's Profile - TOUGH User Community

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Re: No convergence in NSIN at - non-isothermal simulation T2WELL/ECO2N
The code actually recovers from the error message you show, and continues running. The outputs at 5 and 10 seconds look pretty normal. But at about 18 seconds,…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- TOUGH2
- Reported - view
Re: applying heat load in BHE and varying input T?
Hi Hannah, Your heat source term looks correct (when I display it with a uniform-width font, so I can check the column alignment). Check the temperature in element A1000,…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- TOUGH2
- Reported - view
Re: Format of INCON and SAVE file
@Jianhua Jiang Unfortunately, the bug is such that TOUGH does think it is using the correct permeability, so if you use the OUTPU block to request that permeability be shown for each block,…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- TOUGH3
- Reported - view
Re: Format of INCON and SAVE file
@Jianhua Jiang If you have the source code, check that the bug in MULTI.f90 has been fixed (see my previous post and the TOUGH Bugs and Fixes (https://tough.lbl.…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- TOUGH3
- Reported - view
Re: Relative permeability curves in tough2
If you are using TOUGH3 (or iTOUGH I think), the option IRP=12, ICP=12 invokes hysteretic relative permeability and capillary pressure, which includes the option for Krg_max<1 (with RP(5)).…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- 1
- TOUGH2
- Reported - view
Re: Using TOUGH ECO2N for Core flooding
I agree with all Kenny's suggestions, and in addition you could try the following: 1. Different relative permeability function - liquid relative permeability krl controls how much water can flow…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- 1
- TOUGH2
- Reported - view
Re: EOS7c and NCG injection
I would need to see more of your output to know for sure, but I have experienced this sort of thing also. In the original EOS7c, it was a strict requirement that some CH4 always be present,…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- TOUGH3
- Reported - view
Re: How to install TOUGH3 on Window OS?
I have compiled and run TOUGH3 in an Ubuntu window under Windows 10. There should be a script file in your TOUGH3 release package called compile_T3_UbuntuTerminal.sh This script calls configure.…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- Questions & Answers
- Reported - view
Re: Changes of hydraulic conductivity driven by effective stress
TOUGH has been coupled to the commercial software FLAC and also another code ROCMECH, to do coupled fluid flow and transport and geomechanics. If you look at the list of TOUGH publications at https:…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- Questions & Answers
- Reported - view
Re: MeshMaker: Element depth
Dear Ludovic, Sorry for the late reply, I guess I have not been checking the Forum regularly enough. I think you are correct about MeshMaker doing the right thing,…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- Pre & Post Processors
- Reported - view
Re: Calculating Total Heat Generated in an Area
@Christine Doughty Oops, I said the wrong thing about mop(5)=9 output. First is the gas phase, then the liquid phase.
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- TOUGH2
- Reported - view
Re: Calculating Total Heat Generated in an Area
@Christine Doughty One more thing I forgot. The fluid specific enthalpies use a reference temperature of 0 C, so for consistency that should also be used with rock internal energy.…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- TOUGH2
- Reported - view
Re: Calculating Total Heat Generated in an Area
Dear Alborz, Sorry for the late reply - I forgot to check the Forum for a few days. My first thought when answering your original query was to try to use heat flux,…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- TOUGH2
- Reported - view
Re: Calculating Total Heat Generated in an Area
This is kind of an ad hoc approach, but if pressure changes are small, so little heat is being created by mechanical work, then you might be able to approximate the heat content of each grid block…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- TOUGH2
- Reported - view
Re: Can TOUGH3 model temperature below zero degree?
TOUGH3 cannot handle temperatures below zero degrees. In fact, using default parameters, it cannot handle temperatures below 1 C. If you set mop2(11)=1 (see Table 7 in User's Manual),…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- TOUGH3
- Reported - view
Re: Trapping CO2 in ECO2N
Please see the thread "Residual and solubility trapping" in the TOUGH2 forum.
- Staff Scientist
- Christine_Doughty
- 3 yrs ago
- Questions & Answers
- Reported - view
Re: Compressibility On/Off in ECO2M
Pore compressibility describes how porosity changes with pressure change. You can turn it off by setting COM in the ROCKS block to zero. Then porosity will be constant (unless you have precipitation…
- Staff Scientist
- Christine_Doughty
- 3 yrs ago
- 1
- TOUGH3
- Reported - view
Re: Residual and solubility trapping
I have not used ECO2M in a while, so if anyone else has better information, please chime in. But here is what I suggest: For Solubility Trapping (mass of CO2 dissolved in the aqueous phase) there…
- Staff Scientist
- Christine_Doughty
- 3 yrs ago
- 2
- TOUGH2
- Reported - view
Re: Salt precipitation dependency on rate (and grid size)
Dear Godarzi, In my experience, precipitation of salt accompanying CO2 injection is one of the most grid-sensitive problems there is. With a coarse enough grid you may not see precipitation at all,…
- Staff Scientist
- Christine_Doughty
- 3 yrs ago
- TOUGH2
- Reported - view
Re: Output results of specific grid versus time
Dear Refaat, You should include the FOFT block in your TOUGH3 input. You specify a list of elements (grid cells) for which state variables at each time step are recorded in csv files.…
- Staff Scientist
- Christine_Doughty
- 3 yrs ago
- TOUGH3
- Reported - view
Re: Columns Headings in COFT (T2Well)
I don't know T2Well in particular, but in general for identifying COFT entries I make sure TOUGH is printing out at least one main output (search for the string OUTPUT DATA),…
- Staff Scientist
- Christine_Doughty
- 3 yrs ago
- TOUGH3
- Reported - view
Re: Specify the time-dependent BHP
I don't have too much experience using the DELV option, but I think the only way to have a decreasing bottomhole pressure over time would be to restart the problem at a series of times,…
- Staff Scientist
- Christine_Doughty
- 3 yrs ago
- TOUGH2
- Reported - view
Re: TOUGH Workshop 2021
Yes, we are tentatively planning a remote Beginner's Short Course for this October or November, and possibly other short courses also. Contact Helen Prieto (HGPrieto@lbl.…
- Staff Scientist
- Christine_Doughty
- 3 yrs ago
- Questions & Answers
- Reported - view
Re: The order of ELEME and CONNE will influence computation results
I suspect there are other TOUGH users who can give you a much more technical reply, but the general guidance I have been given about constructing grids is to be systematic about ordering elements…
- Staff Scientist
- Christine_Doughty
- 3 yrs ago
- TOUGH+
- Reported - view
Re: Alternative for running immiscible brine-CO2 system
I think what you are asking for is a system where you have brine and supercritical CO2, and no brine evaporates into the CO2 phase and no CO2 dissolves into the aqueous phase.…
- Staff Scientist
- Christine_Doughty
- 3 yrs ago
- TOUGH2
- Reported - view

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