3938 Wavelet-based CFD and Feature Extraction
Takuya Tsuji, Toshitsugu Tanaka · The proceedings of the JSME annual meeting · 2006
Feature extraction of coherent structure of turbulence by wavelet thresholding method is demonstrated. The method is not only a basis of dynamically adaptive algorithm but a powerful tool to improve our understanding of the physics of turbulence. The method is applied to DNS data of isotropic homogeneous and channel turbulence. It is shown that the wavelet can extract the energetic components with lower degree of freedom while the multi-scale nature of turbulence is maintained.