pygfunction
An open-source toolbox for the evaluation of thermal response factors (g-functions) of geothermal borehole fields.
Science Score: 64.0%
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Keywords from Contributors
Repository
An open-source toolbox for the evaluation of thermal response factors (g-functions) of geothermal borehole fields.
Basic Info
Statistics
- Stars: 55
- Watchers: 10
- Forks: 22
- Open Issues: 31
- Releases: 16
Metadata Files
README.md
pygfunction: A g-function calculator for Python
What is pygfunction?
pygfunction is a Python module for the calculation of thermal response factors, or g-functions, for fields of geothermal boreholes. g-functions form the basis of many simulation and sizing programs for geothermal heat pump systems. g-Functions are superimposed in time to predict fluid and ground temperatures in these systems.
At its core, pygfunction relies on the analytical finite line source solution to evaluate the thermal interference between boreholes in the same bore field. This allows for the very fast calculation of g-functions, even for very large bore fields with hundreds of boreholes.
Using pygfunction, g-functions can be calculated for any bore field configuration (i.e. arbitrarily positioned in space), including fields of boreholes with individually different lengths and radiuses. For regular fields of boreholes of equal size, setting-up the calculation of the g-function is as simple as a few lines of code. For example, the code for the calculation of the g-function of a 10 x 10 square array of boreholes (100 boreholes total):
python
import pygfunction as gt
import numpy as np
time = np.array([(i+1)*3600. for i in range(24)]) # Calculate hourly for one day
boreField = gt.boreholes.rectangle_field(N_1=10, N_2=10, B_1=7.5, B_2=7.5, H=150., D=4., r_b=0.075)
gFunc = gt.gfunction.gFunction(boreField, alpha=1.0e-6, time=time)
gFunc.visualize_g_function()
Once the g-function is evaluated, pygfunction provides tools to predict borehole temperature variations (using load aggregation methods) and to evaluate fluid temperatures in the boreholes for several U-tube pipe configurations.
Requirements
pygfunction was developed and tested using Python 3.9. In addition, the following packages are needed to run pygfunction and its examples: - matplotlib (>= 3.9.2), - numpy (>= 1.26.4) - scipy (>= 1.13.1) - SecondaryCoolantProps (>= 1.3) - typing_extensions >= 4.11.0
The documentation is generated using Sphinx. The following packages are needed to build the documentation: - sphinx (>= 7.3.7) - numpydoc (>= 1.7.0)
Quick start
Users - Download pip and install the latest release:
pip install pygfunction[plot]
Alternatively, download the latest release and run the installation script:
pip install .
Developers - To get the latest version of the code, you can download the repository from github or clone the project in a local directory using git:
git clone https://github.com/MassimoCimmino/pygfunction.git
Install pygfunction in development mode (this requires pip >= 21.1):
pip install --editable .
Once pygfunction is copied to a local directory, you can verify that it is
working properly by running the examples in pygfunction/examples/.
Documentation
pygfunction's documentation is hosted on ReadTheDocs.
License
pygfunction is licensed under the terms of the 3-clause BSD-license. See pygfunction license.
Contributing to pygfunction
You can report bugs and propose enhancements on the issue tracker.
To contribute code to pygfunction, follow the contribution workflow.
Contributors
<!-- ALL-CONTRIBUTORS-BADGE:END -->
Massimo Cimmino 💻 📖 💡 :rocket: 🤔 🚧 👀 |
Jack Cook 💻 💡 🤔 📖 |
Matt Mitchell 💻 🤔 |
Wouter Peere 💻 🤔 🐛 |
Tobias Blanke 💻 🤔 🐛 |
Alex Swindler 💻 |
This project follows the all-contributors specification. Contributions of any kind welcome!
Owner
- Name: Massimo Cimmino
- Login: MassimoCimmino
- Kind: user
- Website: https://www.polymtl.ca/expertises/en/cimmino-massimo
- Repositories: 6
- Profile: https://github.com/MassimoCimmino
Citation (CITATION.cff)
cff-version: 1.2.0
message: "If you use this software, please cite it as below."
authors:
- family-names: "Cimmino"
given-names: "Massimo"
orcid: "https://orcid.org/0000-0002-9981-9926"
title: "pygfunction"
version: 2.3.0
date-released: 2025-04-29
url: "https://github.com/MassimoCimmino/pygfunction"
preferred-citation:
type: conference-paper
title: "pygfunction 2.2 : New Features and Improvements in Accuracy and Computational Efficiency"
authors:
- family-names: "Cimmino"
given-names: "Massimo"
orcid: "https://orcid.org/0000-0002-9981-9926"
- family-names: "Cook"
given-names: "Jonathan C."
doi: "10.22488/okstate.22.000015"
start: 45 # First page number
end: 52 # Last page number
year: 2022
collection-type: proceedings
collection-title: "Research Conference Proceedings, IGSHPA Conference 2022"
publisher:
name: International Ground Source Heat Pump Association
institution:
name: International Ground Source Heat Pump Association
collection-doi: 10.22488/okstate.22.000010
location: Las Vegas NV, USA
editors:
- family-names: "Spitler"
given-names: "Jeff"
- family-names: "Acuña"
given-names: "José"
- family-names: "Bernier"
given-names: "Michel"
- family-names: "Cimmino"
given-names: "Massimo"
- family-names: "Fang"
given-names: "Zhaohong"
- family-names: "Gehlin"
given-names: "Signhild"
- family-names: "Javed"
given-names: "Saqib"
- family-names: "Liu"
given-names: "Xiaobing"
- family-names: "Rees"
given-names: "Simon"
- family-names: "Stumpf"
given-names: "Andrew"
conference:
- name: International Ground Source Heat Pump Association Annual Conference
city: Las Vegas
region: NV
country: USA
date-start: 2022-12-06
date-end: 2022-12-08
GitHub Events
Total
- Create event: 10
- Release event: 1
- Issues event: 14
- Watch event: 7
- Delete event: 1
- Issue comment event: 33
- Push event: 32
- Pull request review event: 8
- Pull request review comment event: 15
- Pull request event: 20
- Fork event: 2
Last Year
- Create event: 10
- Release event: 1
- Issues event: 14
- Watch event: 7
- Delete event: 1
- Issue comment event: 33
- Push event: 32
- Pull request review event: 8
- Pull request review comment event: 15
- Pull request event: 20
- Fork event: 2
Committers
Last synced: 7 months ago
Top Committers
| Name | Commits | |
|---|---|---|
| Massimo Cimmino | m****o@p****a | 536 |
| j-c-cook | j****k@o****u | 109 |
| Matt Mitchell | m****l@n****v | 28 |
| wouterpeere | w****e@h****m | 17 |
| allcontributors[bot] | 4****] | 13 |
| Massimo Cimmino | p****4@M****a | 10 |
| j-c-cook | j****k@p****m | 6 |
| Matt Mitchell | m****l@o****u | 6 |
| Nathan Moore | n****e@n****v | 4 |
| Alex Swindler | A****r@n****v | 2 |
| u0112721 | u****1@s****e | 2 |
| Edwin Lee | l****1@g****m | 1 |
Committer Domains (Top 20 + Academic)
Issues and Pull Requests
Last synced: 6 months ago
All Time
- Total issues: 159
- Total pull requests: 173
- Average time to close issues: 3 months
- Average time to close pull requests: about 1 month
- Total issue authors: 17
- Total pull request authors: 8
- Average comments per issue: 1.85
- Average comments per pull request: 1.42
- Merged pull requests: 145
- Bot issues: 0
- Bot pull requests: 9
Past Year
- Issues: 9
- Pull requests: 22
- Average time to close issues: 23 days
- Average time to close pull requests: 17 days
- Issue authors: 3
- Pull request authors: 5
- Average comments per issue: 0.44
- Average comments per pull request: 1.45
- Merged pull requests: 12
- Bot issues: 0
- Bot pull requests: 2
Top Authors
Issue Authors
- MassimoCimmino (100)
- j-c-cook (34)
- wouterpeere (7)
- metab0t (3)
- jankoc (2)
- icupeiro (2)
- AlexLaferriere (2)
- OskarRaftegard (2)
- ikijano (1)
- fuma01 (1)
- sweco-bepedm (1)
- okolodaniel (1)
- Lamal177 (1)
- TobiasEnergyMachines (1)
- vitasoa (1)
Pull Request Authors
- MassimoCimmino (130)
- j-c-cook (31)
- mitchute (11)
- allcontributors[bot] (10)
- wouterpeere (7)
- icupeiro (2)
- axelstudios (2)
- tblanke (1)
Top Labels
Issue Labels
Pull Request Labels
Packages
- Total packages: 3
-
Total downloads:
- pypi 3,627 last-month
-
Total dependent packages: 3
(may contain duplicates) -
Total dependent repositories: 2
(may contain duplicates) - Total versions: 49
- Total maintainers: 1
proxy.golang.org: github.com/massimocimmino/pygfunction
- Documentation: https://pkg.go.dev/github.com/massimocimmino/pygfunction#section-documentation
- License: bsd-3-clause
-
Latest release: v2.3.1+incompatible
published 7 months ago
Rankings
pypi.org: pygfunction
A g-function calculator for Python
- Homepage: https://github.com/MassimoCimmino/pygfunction
- Documentation: https://pygfunction.readthedocs.io/
- License: BSD 3-Clause License
-
Latest release: 2.3.1
published 7 months ago
Rankings
Maintainers (1)
proxy.golang.org: github.com/MassimoCimmino/pygfunction
- Documentation: https://pkg.go.dev/github.com/MassimoCimmino/pygfunction#section-documentation
- License: bsd-3-clause
-
Latest release: v2.3.1+incompatible
published 7 months ago
Rankings
Dependencies
- CoolProp >=6.4.1
- matplotlib >=3.5.1
- numpy >=1.21.5
- numpydoc >=1.2.0
- recommonmark >=0.6.0
- scipy >=1.7.3
- sphinx >=4.4.0
- CoolProp *
- matplotlib *
- numpy *
- scipy *
- numpydoc ==1.2.0
- pytest ==7.1.1
- pytest-cov ==3.0.0
- recommonmark ==0.6.0
- sphinx ==4.4.0
- tox ==3.24.5
- actions/checkout v2 composite
- actions/setup-python v2 composite
- pypa/gh-action-pypi-publish release/v1 composite
- actions/checkout v2 composite
- actions/setup-python v2 composite