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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 diffuser radial pump

Communication avec acte
Author
CHERDIEU, Patrick
DUPONT, Patrick
BOIS, Gérard
ccDAZIN, Antoine
1252 Laboratoire de Mécanique de Lille - FRE 3723 [LML]
ccBAYEUL-LAINÉ, Annie-Claude

URI
http://hdl.handle.net/10985/7601
DOI
10.1088/1757-899X/52/2/022018
Date
2013

Abstract

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

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