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Velocity vector cone angle in turbulent flows

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Abstract

Use is made of computer simulated turbulent signals to calculate the rms of the velocity cone angle. The calculation compares favourably with X-probe data close to the axis of a circular jet. In this flow, the vector cone angle can exceed 90°, even on the axis. As a consequence, the rms values of the cone angle and of the lateral velocity fluctuation can be seriously underestimated with a 90° X-probe. Support for this is provided by measurements with a 120° X-probe.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Newcastle, 2308, N.S.W., Australia

    L. W. B. Browne, R. A. Antonia & L. P. Chua

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  1. L. W. B. Browne
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  2. R. A. Antonia
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  3. L. P. Chua
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Browne, L.W.B., Antonia, R.A. & Chua, L.P. Velocity vector cone angle in turbulent flows. Experiments in Fluids 8, 13–16 (1989). https://doi.org/10.1007/BF00203059

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  • DOI: https://doi.org/10.1007/BF00203059

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