Vortex Fitting Documentation

This tools allows the detection and fitting of vortices in a turbulent flow.

It uses data from DNS or PIV using several formats (netCDF4, TecPlot, OpenFoam …).

The code is hosted at https://github.com/guilindner/VortexFitting

Warning

This software is still under development

Contents:

• Introduction
• Methodology
  • Detection methods
  • Q criterion
  • criterion
  • Swirling strength criterion
  • Localization of the extrema
  • Fitting of coherent structures
  • Lamb-Oseen vortex
  • Non-linear least squares
  • Validation
  • References
• Installation
  • Using PIP
  • Documentation
• Software options
  • How to use the code / detection and fitting options
  • Generating a custom Vortex
  • Converting NetCDF to ASCII (and vice-versa)
• Examples
  • DNS case
  • PIV case - NetCDF file
  • PIV case - Tecplot file
  • Numerical case - OpenFOAM file
• Modules
  • classes.py
  • detection.py
  • fitting.py
  • output.py
  • schemes.py
• Contributors
• Articles

Indices and tables

• Index
• Module Index
• Search Page