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Computation of the sound field of a jet from characteristic turbulence parameters measured by crossed beam techniques

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Abstract

The sound field radiating from a jet is strongly dependent upon the turbulence in the jet. To describe the sound sources in a hot jet, a method has been developed, based upon the measurement of infra-red radiation of the jet, and a hybrid processing of the measured signal, which enables the computation of characteristic properties of the turbulence at various points inside the jet (convection speed, integral length scale, life time and intensity of turbulence).

From these quantities the acoustic far field can be mapped, as a function of the polar distribution of the spectrum, the turbulence intensity and the total sound pressure field.

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Authors and Affiliations

  1. Office National d'Etudes et de Recherches Aèrospatiales (ONERA), 92320, Châtillon, France

    Jean -François De Belleval, Mariano Perulli & Georges Gauffre

Authors
  1. Jean -François De Belleval
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  2. Mariano Perulli
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  3. Georges Gauffre
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De Belleval, J.F., Perulli, M. & Gauffre, G. Computation of the sound field of a jet from characteristic turbulence parameters measured by crossed beam techniques. Opto-electronics 5, 59–69 (1973). https://doi.org/10.1007/BF01421902

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  • DOI: https://doi.org/10.1007/BF01421902

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