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Calibration of the WALLTURB experiment Hot Wire rake with help of PIV

type de publication      communication internationale avec actes publiés
date de publication 2009
auteur(s) Stanislas Michel; Foucaut Jean-Marc; Coudert Sébastien; Tutkun Murat; George W.K.; Delville Joel
  
conférence Progress in Wall Turbulence: Understanding and Modeling
     dates de 21-04-2009 à 23-04-2009
     lieu Lille, France
     nom des actes Proceedings of the WALLTURB International Workshop held in Lille, France, April 21-23, 2009. M. Stanislas, J. Jimenez, I. Marusic Editors, ERCOFTAC Series vol 14, Springer
  
  Sous presse
ISBN / ISSN 978-90-481-9602-9
résumé In the WALLTURB LML experiment presented in Delville et al [1], the calibration of the hot wire rake had to be performed on site, due to the large number of wires on the rake (143). For that purpose, the position of the wires with respect to the wall was carefully measured using two complementary techniques. The blockage effect due to the rake was characterized using StereoPIV and modeled using a simple potential flow model. The results show that the blockage affects mostly the mean flow and not the turbulence itself. Finally, the calibration data were built using the StereoPIV data in a plane located 1 cm upstream of the wires plane. The mean velocity, the second and third moments were provided. The calibration was checked on the fourth moment of the fluctuating velocity.
mots clés Calibration Hot wire SPIV
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