Anisotropic fluctuations in turbulent sheared flows

Details Anisotropic fluctuations in turbulent sheared flows Anisotropic fluctuations in turbulent sheared flows

2004-02-27

arxiv.org/abs/nlin/0402054v1

Nonlinear Sciences

Chaotic Dynamics

11 pages, 8 figures

Scientific paper

10.1063/1.1789546

An experimental analysis of small-scales anisotropic turbulent fluctuations has been performed in two different flows. We analyzed anisotropic properties of an homogeneous shear flows and of a turbulent boundary layer by means of two cross-wire probes to obtain multi-point multi-component measurements. Data are analyzed at changing inter-probe separation without the use of Taylor hypothesis. The results are consistent with the ``exponent-only'' scenario for universality, i.e. all experimental data can be fit by fixing the same set of anisotropic scaling exponents at changing only prefactors, for different shear intensities and boundary conditions.

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