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In situ calibration of hot wire probes in turbulent flows

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Abstract

A method for in situ calibration of hot-wires in a turbulent flow is presented. The method is particularly convenient (even necessary) for calibrating large probe arrays, like the 143-wire boundary layer rake of the WALLTURB experiment. It is based on polynomial expansion of the velocity statistics in terms of voltage statistics as originally described by George et al. [Exp Ther Fluid Sci 2(2):230–235, 1989]. Application of the method requires knowing reference mean velocity and higher order central moments (with the array in place) of the turbulent velocity at the probe location at only one freestream velocity. These were obtained in our experiment by a stereo PIV plane just upstream of the probe array. Both the procedure for implementing the method and sample results are presented in the article.

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Acknowledgments

The authors would like to thank P. B. V. Johansson and L. Jernqvist of Chalmers, F. Mehdi of University of New Hampshire, and P. Braud and C. Fourment of Laboratoire d’Etudes Aérodynamiques for their help for realization of the experiments within the Wallturb research program. This work has been performed under the WALLTURB project. WALLTURB (A European synergy for the assessment of wall turbulence) is funded by the CEC under the sixth framework program (CONTRACT No: AST4-CT-2005-516008).

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Authors and Affiliations

  1. Norwegian Defence Research Establishment, FFI, P.O. Box 25, 2027, Kjeller, Norway

    M. Tutkun

  2. Department of Applied Mechanics, Chalmers University of Technology, 412 96, Gothenburg, Sweden

    W. K. George

  3. Laboratoire de Mécanique de Lille, UMR CNRS 8107, Bv Paul Langevin, Cité Scientifique, 59655, Villeneuve d’Ascq, France

    J. M. Foucaut, S. Coudert & M. Stanislas

  4. Laboratoire d’Etudes Aérodynamiques, Université de Poitiers, UMR CNRS 6609, ENSMA, 47 route de l’Aerodrome, 86036, Poitiers Cedex, France

    J. Delville

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  1. M. Tutkun
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  2. W. K. George
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  3. J. M. Foucaut
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  4. S. Coudert
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  5. M. Stanislas
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  6. J. Delville
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Correspondence to M. Tutkun.

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Tutkun, M., George, W.K., Foucaut, J.M. et al. In situ calibration of hot wire probes in turbulent flows. Exp Fluids 46, 617–629 (2009). https://doi.org/10.1007/s00348-008-0587-0

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  • DOI: https://doi.org/10.1007/s00348-008-0587-0

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