v2.0 April 30th 2024 (now: v2.0.0a3 April 15th 2024)
OpenPulse is a software written in Python for numerical modelling of low-frequency acoustically induced vibration in gas pipeline systems. It allows to create or/and import the geometry of the pipe system, insert materials properties, set standardized or customized sections, and import pressure/acceleration/force loads (from measurements or theory). OpenPulse performs an acoustic time-harmonic response analysis of the respective 1D acoustic domain using the Finite Element Transfer Matrix Method (FETM). The resulting pressure field is applied as a distributed load over the respective structural piping system, modeled with the Timoshenko beam theory and the Finite Element Method (FEM), in order to run a structural time-harmonic response analysis. In addition to simply boundary conditions as constraints on displacements, OpenPulse allows to insert lumped springs, masses and dampers along the domain.
After defining the FEM mesh for the model, you can plot the piping system geometry and run simulations such as modal analysis and harmonic analysis. It is possible to plot deformed shapes, frequency plots of acoustical and structural responses, stress fields and local stresses of desired sections.
What's new?
- New geometry interface: now the user can draw geometry through an intuitive interface, following the conventions of popular piping software.
- Standardization of sections and materials, along with using various unit systems.
- Adjustments and validation of the reciprocating compressor model.
- Physics validation of several analysis after comparing with 3D FEM commercial softwares.
- New interface and visualization tools.
- Enhancements of project files management.
- Enhanced animation of results (real and imaginary parts, phase monitoring, etc).
- Install OpenPulse for Windows and Linux downloading the executables here.
-
Install Python 3.9.0 or later (download).
-
Install OpenPulse. Clone or download OpenPulse files. In the case of download, unzip the received file and open a terminal in the main folder (preferably, use PowerShell as administrator). Start by installing the poetry module using the command:
pip install poetry
then enter the following command to install all dependencies:
poetry install
Note: if some warning was logged repeat the command 'poetry install' before trying to run OpenPulse.
- Run OpenPulse. In the same folder, enter the following command in the terminal:
poetry run python pulse
-
You can read the API reference here.
-
Theory Reference for 1D Acoustics, Structural Vibration of Timoshenko Beams using FEM, Weak Fluid-Structure-Coupling FETM-FEM, Solution Types (May, 15th 21), Matrix Assembly Technique using Python and Stress Stiffening (Prestress).
-
Project page on Researchgate.
-
[Português] Demonstração rápida: MOPT YouTube.
- Internoise 2024, 25 - 29 August, Nantes, France.
- IIR conference on Compressors and Refrigerants 2024, 9 - 11 September, Bratislava, Slovakia.
If you have any questions you can open a new issue with the tag 'question'.
The authors are members of MOPT - Multidisciplinary Optimization Group, from Federal University of Santa Catarina (Florianópolis, SC, Brazil).
- Olavo M. Silva - Engineer;
- Jacson G. Vargas - Engineer;
- Andre F. Fernandes - Computer Scientist;
- Rodrigo Schwartz - Computer Scientist;
- Diego M. Tuozzo - Engineer (Former Member);
- Lucas V. Q. Kulakauskas - Engineer (Former Member);
- Ana P. Rocha - Engineer (Former Member);
- José L. Souza - Computer Scientist (Former Member);
- Danilo Espindola - Interface with other softwares;
- Vitor Slongo - Mesh and Geometry Specialist;
- Gildean Almeida - Validation;
- Fabrício Cruz - Validation.
**