| taille du texte : S-M-L |
| impression | intranet

Comparisons RANS and URANS numerical results with experiments in a vaned diffuser of a centrifugal pump

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2015
auteur(s) Bayeul-Laine Annie-Claude; Dupont Patrick; Cavazzini Giovanna; Pavesi Giogio; Dazin Antoine; Cherdieu Patrick; Bois Gérard; Roussette Olivier
journal (abréviation) La Houille Blanche (La Houille Blanche)
volume (numéro) 2
pages 108 – 116
résumé The paper presents the analysis of the performance and the internal flow behaviour in the vaned diffuser of a radial flow pump using PIV (particles image velocimetry) technique, pressure probe traverses and numerical simulations. PIV measurements have been performed at different hub to shroud planes inside one diffuser channel passage for a given rotational speed and various flow rates. For each operating condition, PIV measurements have been made for different angular positions of the impeller. Probe traverses have also been performed using a 3 holes pressure probe from hub to shroud diffuser width at different radial locations in between the two diffuser geometrical throats. The numerical simulations were realized with the two commercial codes: i-Star CCM+ 8.02.011 (RANS (Reynolds Averaged Navier Stokes) turbulence model, frozen rotor and unsteady calculations), ii-CFX 10.0 (turbulence modelled with DES model (Detached Eddy Simulation) combining RANS with LES (Large Eddy Simulation), unsteady calculations). Comparisons between numerical (fully unsteady calculations) and experimental results are presented and discussed for two flow rates. In this respect, the effects of fluid leakage due to the gap between the rotating and fixed part of the pump model are analysed and discussed.
mots clés Pump, diffuser, PIV measurements, numerical calculations, probes
lien lien  
Exporter la citation au format CSV (pour Excel) ou BiBTeX (pour LaTeX).