Reference 1:
The reference to cite is: https://doi.org/10.1016/j.cma.2020.112885
Farshad Navah, Marta de la Llave Plata, Vincent Couaillier, A high-order multiscale approach to turbulence for compact nodal schemes, Computer Methods in Applied Mechanics and Engineering, Volume 363, 2020, 112885, ISSN 0045-7825.
The extended pre-published manuscript can be consulted at: https://arxiv.org/abs/1809.03966
Reference 2:
https://github.com/fanav/Energy_Spectrum
Script (with example) to compute the kinetic energy spectrum of periodic turbulent flows. Adapted to the Taylor-Green vortex (TGV) problem.
Instructions:
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Load/install python 3 with numpy and matplotlib
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Execute as: python3 compute_Ek_Spectrum.py
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Enter: Desired file name? velocityfld_ascii.dat
Example file: velocityfld_ascii.dat | Case: TGV; Re=5000; P6; DOFs=84^3