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Wavelet decomposition and coherent structures eduction of low Reλ turbulent hot wire signals

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Abstract

Hot wire signals obtained in grid-turbulence are processed through orthogonal wavelet transform. It is shown that using wavelet decomposition in combination with the form of scaling named Extended Self Similarity, some statistical properties of fully developed turbulence can be extended to very low Reλ flows. Furthermore, based on the wavelet decomposition, a new technique for coherent structures identification is introduced. We present results obtained in grid turbulence data at low and very low Reλ conditions.

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Authors and Affiliations

  1. Dipartimento di Ingegneria Meccanica e Industriale, Università “Roma Tre”, via Segre 60, 00146, Roma, Italy

    R. Camussi & G. Guj

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  1. R. Camussi
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  2. G. Guj
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Camussi, R., Guj, G. Wavelet decomposition and coherent structures eduction of low Reλ turbulent hot wire signals. Appl. Sci. Res. 57, 195–209 (1996). https://doi.org/10.1007/BF02506059

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  • DOI: https://doi.org/10.1007/BF02506059

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