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The ability of wavelet multi-resolution analysis to detect and track the energycontaining motions that govern the dynamics of a fluid flow offers a unique hierarchical framework for modelling and simulating turbulence. In this paper, the role of the wavelet thresholding level in wavelet-based modelling and simulation of turbulent flows is systematically examined. The thresholding level controls the relative importance of resolved energetic structures and residual unresolved background flow and,doi:10.1017/jfm.2012.6 fatcat:552iz6gaevb5hdgmn5khsqi5am