The streamwise turbulence intensity in the intermediate layer of high Reynolds turbulent pipe flow

A modification of the Townsend-Perry attached eddy model is derived in order to reproduce a more realistic variation of the integral length scale. A new wavenumber range is introduced to the model at wavenumbers smaller than the Townsend-Perry k^(-1) spectrum. This necessary addition can also account for the high Reynolds number outer peak of...

Large scale organization of near wall turbulent boundary layer

An experimental database at a Reynolds number based on momentum thickness ReΘ close to 9800, was obtained in the Laboratoire de Mécanique de Lille wind tunnel with stereo-PIV (SPIV) and hot wire anemometry (HWA). With a Linear Stochastic Estimation procedure based on correlations computation, a 3 component field is reconstructed at high...