Part of a (mini) project in fluid mechanics, I studied together with my teammate Zoubir MOUSTATIA (@mzoubir01) the classical example of a flow around a cylinder.
Our focus was mainly on characterizing the flow by the Reynolds number (Re), the drag and lift coefficient and Strouhal number.
We have made simulations to identify laminar and turbulent flows. We have also made simulations of drag and lift coefficient both as a function of time and Re. Finally, we were able to deduce the evolution of Strouhal number as a function of Re.
We have used OpenFOAM as solver to simulate the system, Paraview to visualize the output,
and Python to postprocess data.
The project article can be found here.
We have gathered in this repository the python code that was developed to postprocess data. As a brief description:
-
We have implemented a class
ReadCoefficientsFromFilethat extract the useful information from the output file and then process it (mean, Fourier transformation, dominant frequency, …) -
We have built a function
build_dict_simulationsthat run over all the output files and thereby create a dictionary that gather all the simulations. -
The remaining python scripts located in
simulation_scriptsare meant to create plots and animations.
This repository is meant to guarantee the reproducibility of our findings. To do so follow the steps below:
- Clone the repository
- Download the simulation outputs from this link
- Move the simulations to the folder
simulation_outputs - Do the same for experience data but rather put the downloaded items in
experience_datafolder
After doing that, all the scripts must work without any problems
Animation of velocity magnitude for Re = 1000
Animation of drag and lift coefficient when changing Re
Done by: Badr MOUFAD & Zoubir MOUSTATIA