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Data reduction problems using a 3 - hole directional pressure probe to investigate mean flow characteristics in the vaneless gap between impeller and diffuser radial pump

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2013
auteur(s) Cherdieu Patrick; Dupont Patrick; Bayeul-Laine Annie-Claude; Dazin Antoine; Bois Gérard
journal (abréviation) IOP Conf. Series: Materials Science and Engineering (IOP of sciences)
volume (numéro) 52
numéro de papier 022018
  
pages 1 – 6
résumé Among several different measurement techniques that have been already performed and presented in a radial impeller pump model including PIV, a directional pressure probe has been used to obtain mean velocity field and stagnation pressure between impeller outlet and the inlet vaned diffuser sections. These measurements are supposed to get more information not only about global pump head coefficient including vaned diffuser ones but also about impeller performances itself. Pressure probe information is affected by rotor-stator interactions and impeller rotation, and this paper presents a way to explain and correct pressure probe indications in order to achieve a better evaluation of overall impeller mean performances. The use of unsteady RANS calculation results is found to be a useful way to perform better data reduction analysis for this purpose
mots clés impeller, diffuser, probe, RANS calculation
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