Christine Doughty's Profile - TOUGH User Community

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Re: Error Message
@Stefan Finsterle Thanks for an elegant explanation. I guess after all these years, I am still biased to think in terms of liquid-saturated systems. I agree with you that gas saturation will increase…
- Staff Scientist
- Christine_Doughty
- 2 wk ago
- TOUGH2
- Reported - view
Re: Error Message
@Yogendra Narayanan Suresh Kumar Definitely. You can try changing the various parameters and see what effect it has. See the TOUGH user's guide for a description of what the different parameters are.…
- Staff Scientist
- Christine_Doughty
- 2 wk ago
- TOUGH2
- Reported - view
Re: Error Message
@Yogendra Narayanan Suresh Kumar The only way I know how to do that is to co-inject water vapor with the CO2, so the gas phase that forms is already saturated with water vapor,…
- Staff Scientist
- Christine_Doughty
- 2 wk ago
- TOUGH2
- Reported - view
Re: Error Message
@Yogendra Narayanan Suresh Kumar That makes sense to me. Changing porosity generally just changes the time scale on which flow processes occur. So if you are just looking at steady state results,…
- Staff Scientist
- Christine_Doughty
- 2 wk ago
- TOUGH2
- Reported - view
Re: Error Message
@Yogendra Narayanan Suresh Kumar In general, I expect that when permeability is decreased for a constant mass injection rate problem, pressure will increase, CO2 density will increase,…
- Staff Scientist
- Christine_Doughty
- 2 wk ago
- TOUGH2
- Reported - view
Re: Error Message
@Yogendra Narayanan Suresh Kumar You asked the code to run 1000 time steps (PARAM block, first line, columns 5-8) and it did. Then it ended normally. It reduced the time step twice (as you see in the…
- Staff Scientist
- Christine_Doughty
- 1 mth ago
- TOUGH2
- Reported - view
Re: Error Message
@Yogendra Narayanan Suresh Kumar You are injecting CO2 at one end of your core, and I think you need to allow fluid to flow out of the other end of the core,…
- Staff Scientist
- Christine_Doughty
- 1 mth ago
- TOUGH2
- Reported - view
Re: Error Message
@Yogendra Narayanan Suresh Kumar When I try the infile you posted as INFILE (1) (I renamed it INFILE), TOUGH3 ran 343 steps to 118.9 seconds and quit with a convergence error because the pressure got…
- Staff Scientist
- Christine_Doughty
- 2 mths ago
- TOUGH2
- Reported - view
Re: Error Message
@Yogendra Narayanan Suresh Kumar There is a blank line in the ROCKS block that should not be there, between the line starting with 03 and the line starting with 12. Try removing that line.…
- Staff Scientist
- Christine_Doughty
- 3 mths ago
- TOUGH2
- Reported - view
Re: Request for Location of newhyster.xls File for Hysteresis Graphs
Hi Kohei, I have that spreadsheet. I am uploading it here. Let me know if it opens okay for you. Christine
Attachment
- Staff Scientist
- Christine_Doughty
- 6 mths ago
- TOUGH3
- Reported - view
Re: Error Message
On first glance at your input file, I think you need a blank line at the end of your COFT and FOFT blocks. A good general tip is to look at your output file and see how far the code got in processing…
- Staff Scientist
- Christine_Doughty
- 9 mths ago
- TOUGH2
- Reported - view
Re: Coupled reservoir-wellbore model initialization (using T2Well)
@Mo Saeed Sorry, but I do not know of any step-by-step guidelines for using T2Well. The User's Guide is the best place to start. Many TOUGH-related topics other than T2Well are also covered in the…
- Staff Scientist
- Christine_Doughty
- 10 mths ago
- TOUGH3
- Reported - view
Re: GENER : COM1 vs MASS type ---->Pumping water from element in a 2phase flow problem
For pumping from a certain element, it is better to use MASS with a rate <0. Here is what the TOUGH2 Users Guide says about controlling the phase that you pump out:…
- Staff Scientist
- Christine_Doughty
- 1 yr ago
- 1
- TOUGH2
- Reported - view
Re: Doubts about the integrated finite difference method (IFDM)
Hello Luis, The IFDM is a finite volume method. It is described in the TOUGH2 User's manual (Pruess et al., 2012), which may be viewed or downloaded from the TOUGH Manuals web page (https://tough.lbl.…
- Staff Scientist
- Christine_Doughty
- 1 yr ago
- TOUGH2
- Reported - view
Re: Coupled reservoir-wellbore model initialization (using T2Well)
@Sunny Dai No worries. Good luck with your continued TOUGH use.
- Staff Scientist
- Christine_Doughty
- 1 yr ago
- TOUGH3
- Reported - view
Re: Coupled reservoir-wellbore model initialization (using T2Well)
@Sunny Dai In flow.inp, there is a typo: the keyword to specify initial temperature for a material is INDOM. TOUGH reads "INCOM" and does not recognize it as a keyword, so skips it.…
- Staff Scientist
- Christine_Doughty
- 1 yr ago
- TOUGH3
- Reported - view
Re: Coupled reservoir-wellbore model initialization (using T2Well)
@Sunny Dai When you say temperature gradient disappearance, do you mean that you specify a vertical temperature gradient as an initial condition, and after the code runs for a while,…
- Staff Scientist
- Christine_Doughty
- 1 yr ago
- TOUGH3
- Reported - view
Re: van Genuchten - Mualem model
Sorry for the late reply, for some reason the Forum did not ping me with your new message. The rel perm and Pcap dependence on lambda can be unintuitive,…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- TOUGH3
- Reported - view
Re: van Genuchten - Mualem model
Hi Nick, Sl is liquid saturation (the fraction of the pore space containing liquid phase). Usually "liquid" means aqueous, but not always, it depends on which equation of state (EOS) you are using.…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- TOUGH3
- Reported - view
Re: Training
We are tentatively planning to offer in-person training classes in Fall 2023 at Lawrence Berkeley National Laboratory, including a TOUGH Beginner's Course.…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- 1
- TOUGH2
- Reported - view
Re: I want to install TOUGH3
What kinds of rock mineral analysis do you want to do? TOUGH3 models fluid and heat flow through geologic media, which I do not think of as rock mineral analysis.…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- Questions & Answers
- Reported - view
Re: T2Well (Error message)
@Refaat G Hashish Make sure your actual number of elements is no larger than 22000 and your actual number of connections is no larger than 61300. That is the only requirement on MNEL and MNCON (The…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- TOUGH3
- Reported - view
Re: EOS7C WARNING. H2O MASS FRACTION IN THE GAS WAS LESS THAN ZERO IN 1 GRID BLOCKS
Here are a few things to check: Does your grid resolution change too suddenly? I try to make coarser grid blocks no more than 1.5 times the size of adjacent finer grid blocks.…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- TOUGH3
- Reported - view
Re: An error running the "CO2 leakage along a fault" example in toughio tutorial
Please start by reviewing your INFILE, to make sure it does not contain anything unexpected. If it looks good, you can post it here and I will take a look at it.
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- TOUGH3
- Reported - view
Re: EOS7C WARNING. H2O MASS FRACTION IN THE GAS WAS LESS THAN ZERO IN 1 GRID BLOCKS
In the past, I have had better success using EOS7C when I specify a very small amount of all components as initial conditions. I use something like 1e-10 for mass fractions,…
- Staff Scientist
- Christine_Doughty
- 2 yrs ago
- TOUGH3
- Reported - view

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