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

type de publication      communication internationale avec actes publiés
date de publication 2013
auteur(s) Cherdieu Patrick; Dupont Patrick; Bayeul-Laine Annie-Claude; Dazin Antoine; Bois Gérard
  
conférence ICPF 2013
     dates de 19-09-2013 à 22-09-2013
     lieu Beijing, Chine
     nom des actes ICPF 2013
  
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 Pump, diffuser, PIV measurements, numerical calculations, probes
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