Fluids is open-source software for engineers and technicians working in the fields of chemical, mechanical, or civil engineering. It includes modules for piping, fittings, pumps, tanks, compressible flow, open-channel flow, atmospheric properties, solar properties, particle size distributions, two phase flow, friction factors, control valves, orifice plates and other flow meters, ejectors, relief valves, and more.

The fluids library is designed to be a low-overhead, lightweight repository of engineering knowledge and utilities that relate to fluid dynamics.

Fluids was originally tightly integrated with SciPy and NumPy; today they are optional components used for only a small amount of functionality which do not have pure-Python numerical methods implemented. Fluids targets Python 3.6 and up as well as PyPy3. Additionally, fluids has been tested by the author to load in IronPython, and micropython.

While the routines in Fluids are normally quite fast and as efficiently coded as possible, depending on the application there can still be a need for further speed. PyPy provides a substantial speed boost of 6-12 times for most methods. Fluids also supports Numba, a powerful accelerator that works well with NumPy. The Numba interface to fluids also makes it easy to multithread execution as well, avoiding Python GIL issue.

Fluids runs on all operating systems which support Python, is quick to install, and is free of charge. Fluids is designed to be easy to use while still providing powerful functionality. If you need to perform some fluid dynamics calculations, give fluids a try.

Installation

Get the latest version of fluids from https://pypi.python.org/pypi/fluids/

If you have an installation of Python with pip, simple install it with:

$ pip install fluids

Alternatively, if you are using conda <https://conda.io/en/latest/>_ as your package management, you can simply install fluids in your environment from conda-forge <https://conda-forge.org/>_ channel with:

$ conda install -c conda-forge fluids

To get the git version, run:

$ git clone git://github.com/CalebBell/fluids.git

Documentation

fluids's documentation is available on the web:

http://fluids.readthedocs.io/

Latest source code

The latest development version of fluids's sources can be obtained at

https://github.com/CalebBell/fluids

Bug reports

To report bugs, please use the fluids's Bug Tracker at:

https://github.com/CalebBell/fluids/issues

If you have further questions about the usage of the library, feel free to contact the author at Caleb.Andrew.Bell@gmail.com.

License information

Fluids is MIT licensed. See LICENSE.txt for full information on the terms & conditions for usage of this software, and a DISCLAIMER OF ALL WARRANTIES.

Although not required by the fluids license, if it is convenient for you, please cite fluids if used in your work. Please also consider contributing any changes you make back, such that they may be incorporated into the main library and all of us will benefit from them.

Citation

To cite fluids in publications use::

Caleb Bell and Contributors (2016-2023). fluids: Fluid dynamics component of Chemical Engineering Design Library (ChEDL)
https://github.com/CalebBell/fluids.

Keywords

fluid dynamics atmosphere pipe fluids compressible fluid dynamics chemical engineering mechanical engineering valve open channel tank friction pressure drop two phase pump drag reynolds sedimentation engineering pipeline process simulation particle size distribution

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