raster.py
: Reads a specific step from an h5 snapshot of SPH-EXA, creates a 3D Cartesian mesh, and performs a nearest neighbor search for each cell, to find the closest SPH particle and assign its velocity. Generates a file with the Cartesian grid and corresponding velocity components: x, y, z, vx, vy, vzkdtree_raster.py
: Same as above, but implemented a KD-tree over the scattered SPH particles and perform the nearest neighbor search as a query to the KD-tree structure, to speed things up.power_spectra.py
: Reads the data created by the raster, performs a 3D FFT, and calculates the 1D-averaged power spectra. Saves the spectra in a file: k, Ek, and plots it.plot_spectra.py
: Simple script to plot several power spectra on the same plot.kolmogorov.py
: Generates a synthetic velocity field that has a Kolmogorov energy distribution. It is used to validate power_spectra.py.
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