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Influence of the Blade Number on Inducer Cavitating Behavior

Article dans une revue avec comité de lecture
Auteur
CAIGNAERT, Guy
BOIS, Gérard
LEROUX, Jean-Baptiste
ccCOUTIER-DELGOSHA, Olivier
1252 Laboratoire de Mécanique de Lille - FRE 3723 [LML]

URI
http://hdl.handle.net/10985/6895
DOI
10.1115/1.4006693
Date
2012
Journal
Journal of Fluids Engineering

Résumé

Effects of the blade number on the performance of a rocket engine turbopump inducer are investigated in the present paper. For that purpose, two inducers characterized by three blades and five blades, respectively, were manufactured and tested experimentally. The two inducers were designed on the basis of identical design flow rate and identical pressure elevation at nominal flow rate. The first part of the study focuses on the steady behavior of the inducers in cavitating conditions: evolutions of performance, torque, mass flow rate, and amplitude of radial forces on the shaft according to the inlet pressure are considered. Several flow rates and rotation speeds are investigated. Significant differences between the inducers are obtained concerning the critical cavitation number, the amplitude of the radial forces, and the organization of cavitation in the machinery. Cavitation instabilities are investigated in the second part of the study. Various flow patterns are detected accord- ing to the mass flow rate and the cavitation number.

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Fin d'embargo:
2017-11-08
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  • Laboratoire de Mécanique des Fluides de Lille (LMFL)

Documents liés

Visualiser des documents liés par titre, auteur, créateur et sujet.

  • Analysis of Cavitation Instabilities in a Four-Blade Inducer 
    Article dans une revue avec comité de lecture
    ccCOUTIER-DELGOSHA, Olivier; ccDAZIN, Antoine; CAIGNAERT, Guy; BOIS, Gérard (HPC - Hindawi Publishing Corporation, 2012)
    The cavitating behavior of a four-blade inducer tested in the LML laboratory large test facility is considered in the present paper. Experimental investigations based on unsteady pressure measurements and records from a ...
  • Modeling of Hydro-Pneumatic Energy Storage Using Pump Turbines 
    Communication avec acte
    ORTEGO, Egoï; ccDAZIN, Antoine; CAIGNAERT, Guy; COLAS, Frédéric; ccCOUTIER-DELGOSHA, Olivier (SHF - Société Hydrotechnique de France, 2011)
    Modelling of a hydro-pneumatic energy storage system is presented in this paper. Hydro pneumatic storage aims to combine the good efficiency of hydraulic energy conversion and the space flexibility of pneumatic storage. ...
  • Transient behavior of a radial vaneless diffuser 
    Communication avec acte
    DUPONT, Patrick; CAIGNAERT, Guy; BOIS, Gérard; ccDAZIN, Antoine (ASME, 2011)
    The paper refers to the behavior of a radial flow pump vaneless diffuser during a starting period. Results obtained with a 1D numerical model are compared with some new experimental data which have been obtained using 2D/3C ...
  • Experimental and Numerical Investigation of Unforced unsteadiness in a Vaneless Radial Diffuser 
    Communication avec acte
    PAVESI, Giorgio; CAVAZZINI, Giovanna; CAIGNAERT, Guy; BOIS, Gérard; ARDIZZON, Guido; ccDAZIN, Antoine (EUROTURBO, 2011)
    The paper reports combined experimental and numerical investigations of unforced un- steadiness in a vaneless radial diffuser. Experimental data were obtained within the diffuser using stereoscopic time resolved Particle ...
  • High-speed stereoscopic PIV study of rotating instabilities in a radial vaneless diffuser 
    Article dans une revue avec comité de lecture
    CAVAZZINI, Giovanna; PAVESI, Giorgio; DUPONT, Patrick; COUDERT, Sebastien; ARDIZZON, Giorgio; CAIGNAERT, Guy; BOIS, Gérard; ccDAZIN, Antoine (Springer Verlag (Germany), 2011)
    This paper presents an experimental analysis of the unsteady phenomena developing in a vaneless diffuser of a radial flow pump. Partial flow operating conditions were investigated using 2D/3C high repetition rate PIV, ...

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