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Wavelet filtering of three‐dimensional turbulence
Author(s) -
Farge Marie,
Pellegrino Giulio,
Schneider Kai
Publication year - 2001
Publication title -
zamm ‐ journal of applied mathematics and mechanics / zeitschrift für angewandte mathematik und mechanik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.449
H-Index - 51
eISSN - 1521-4001
pISSN - 0044-2267
DOI - 10.1002/zamm.20010811512
Subject(s) - turbulence , vortex tube , wavelet , vortex , vorticity , homogeneous isotropic turbulence , orthogonal wavelet , vector field , physics , isotropy , mathematics , mathematical analysis , wavelet transform , mechanics , wavelet packet decomposition , computer science , direct numerical simulation , optics , artificial intelligence , reynolds number
We present a new vortex tube extraction method for three‐dimensional turbulent flows. The method is based on an orthogonal wavelet decomposition of the vorticity vector field. The coherent part of the flow is reconstructed from the strongest wavelet coefficients using an universal threshold criterion. As example we present the vortex tube extraction of three‐dimensional homogeneous isotropic turbulence.