openairbearing 0.1.8

A Python package for externally pressurized air bearing analysis.

OpenAirBearing: Open-Source porous gas bearing analysis

Introduciton

OpenAirbearing includes a backed to model porous bearing performance and a browser GUI to display the results. Software can be used online at https://www.openairbearing.com in a limited capability, and in full capability when used locally.

Supported features include:

• Circular thrust bearings
• Annular thrust bearings and seals
• Infinitely long linear bearings and seals
• Rectangular bearings

Mathematical modeling

Analytical and numerical solutions of the Reynolds equation in one dimension fort most common porous gas bearing and seal geometries. Analytical solutions assume ideal geometry, numerical (finite difference method) solutions consider uneven gap height, uneven permeability, and slip at porous-gap interface. Implements models from textbooks [1,2] and research of Miettinen et al. [3,4].

Installation

Python is required to use OpenAirBearing. You can install Python from the official website (https://www.python.org/).

OpenAirBearing can be installed using the Python package installer pip (https://pypi.org/project/pip/):

pip install openairbearing

Alternatively, git can be used to clone the repository:

git clone https://github.com/Aalto-Arotor/openTorsion.git

This creates a folder openairbearing containing the OpenAirBearing source code.

Quickstart

OpenAirbearing userinterface can be accessed with the following:

python3
from openairbearing import app
app.run()

This lauches the Dash application, which can be accessed at:

http://127.0.0.1:8050

Contact

Main developer is Mikael Miettinen from Arotor lab at Aalto University Finland.

https://www.aalto.fi/en/department-of-energy-and-mechanical-engineering/aalto-arotor-lab

For any questions regarding the software please contact [e-mail]

References

[1] V. N. Constantinescu, Gas Lubrication, American Society of Mechanical Engineers, 1969. URL: https://archive.org/details/gaslubrication0000cons/

[2] F. Al-Bender, Air Bearings - Theory, Design and Applications, John Wiley &Sons, 2021. doi: https://doi.org/10.1002/9781118926444

[3] M. Miettinen, V. Vainio, R. Theska, R. Viitala, On the static performance of aerostatic elements, Precision Engineering 89 (2024) 1–10. doi: https://doi.org/10.1016/j.precisioneng.2024.05.017.

[4] M. Miettinen, V. Vainio, R. Viitala, Aerostatic porous annular thrust bearings as seals, Tribology International 200 (2024) 110073. doi: https://doi.org/10.1016/j.triboint.2024.110073.