Creation of geothermal examples

[jcherw2]

Hi - I have a few geothermal examples worked out that are not in the repository of examples and I woudl like to add them to teh example repository. I created the input the old fashined way by 'by hamd' (editor) and created postprocessing with floPy just using Spyder. When I downloaded an existing example 'The Barends problem' I noted several referecences in the Py script to Github so I assume I have to use Github to make/run an example. Is that correct? And if so coudl somone give me a heads up how where to do this in Github? I just installed Github desktop and created a local clone of the project, but don't really know how to proceed from there. Thanks

[christianlangevin]

Hi @jcherw2, thanks for thinking about adding a MODFLOW 6 example. All of our examples are contained in a separate repository called modflow6-examples. There are developer instructions in that repository describing the process. The basic procedure is to create a python script, following a very specific format, and also prepare a written description of the problem. It is also important to ensure that model runs relatively quickly (on the order of seconds), if possible. It might be good to run these examples by @emorway-usgs and other developers to make sure they are a good fit for our example set.

[jcherw2]

Hi Christian I am already in contact with Eric and he is positive about he example (the Elder problem see link <https://books.gw-project.org/variable-density-groundwater-flow/chapter/the-elder-problem/>) . I'll look in the modflow6-examples <https://github.com/MODFLOW-ORG/modflow6-examples> repository. Ias said, I am a bit old school, built my first model in 1982 and I am currently working with HST3D on geothermal problems and trying to replace that with Modflow 6. Rgds, Joost Herweijer

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On Fri, Mar 7, 2025 at 9:42 PM Christian Langevin ***@***.***> wrote: Hi @jcherw2 <https://github.com/jcherw2>, thanks for thinking about adding a MODFLOW 6 example. All of our examples are contained in a separate repository called modflow6-examples <https://github.com/MODFLOW-ORG/modflow6-examples>. There are developer instructions <https://github.com/MODFLOW-ORG/modflow6-examples> in that repository describing the process. The basic procedure is to create a python script, following a very specific format, and also prepare a written description of the problem. It is also important to ensure that model runs relatively quickly (on the order of seconds), if possible. It might be good to run these examples by @emorway-usgs <https://github.com/emorway-usgs> and other developers to make sure they are a good fit for our example set. — Reply to this email directly, view it on GitHub <#2240 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AIWIVEWMTSRD76U44L3CXH32TF5I7AVCNFSM6AAAAABYP5T2ICVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTENBSGU2DKMQ> . You are receiving this because you were mentioned.Message ID: ***@***.***>

-- Joost C. Herweijer Mobile AU +61 (0)403 113610 Mobile NL +31 (0)6 41175435 PO Box 967 Mount Barker SA 5251 Australia

[christianlangevin]

That's great, Joost. Would be nice to get the Elder problem in as a formal example. I look forward to seeing what you come up with!

[jcherw2]

Hi Christian, Below is a result of a run with Modflow 6 before GWE but with the viscosity and using the temperature species method. It produced more or less the same results as HST3D (I used the same gridding and input data) . I just copied the Barends problem script from the 'read the docs' examples and I'll use that to set up the problem hopefully in the format that you require for the examples. I'll have a closer look at how it compares with some of the other results in various papers, but in the end I may limit it to just replicating the HST3D test problem. Do you think this approach makes sense (I noticed you have also looked at the Elder problem in the past) without going into all the intricacies of the Elder problem and numerical gridding issues? [image: Row-1-T-99-99-C-Contour.png] Joost

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On Fri, Mar 7, 2025 at 10:31 PM Christian Langevin ***@***.***> wrote: That's great, Joost. Would be nice to get the Elder problem in as a formal example. I look forward to seeing what you come up with! — Reply to this email directly, view it on GitHub <#2240 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AIWIVEULFNLATCRO37TA74T2TGDB5AVCNFSM6AAAAABYP5T2ICVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTENBSGU4DMMQ> . You are receiving this because you were mentioned.Message ID: ***@***.***>

-- Joost C. Herweijer Mobile AU +61 (0)403 113610 Mobile NL +31 (0)6 41175435 PO Box 967 Mount Barker SA 5251 Australia

[emorway-usgs]

Hello Joost, I didn't see this back-and-forth until after responding to your email this morning. Rather than repeat everything here, I'll wait to hear back from you via email.