• français
    • English
    English
  • Ouvrir une session
Aide
Voir le document 
  •   Accueil de SAM
  • Dynamique des Fluides (DynFluid)
  • Voir le document
  • Accueil de SAM
  • Dynamique des Fluides (DynFluid)
  • Voir le document
JavaScript is disabled for your browser. Some features of this site may not work without it.

Numerical analysis of unsteady cavitating flow in an axial inducer

Article dans une revue avec comité de lecture
Auteur
CAMPOS–AMEZCUA, Rafael
250023 Universidad Nacional Autónoma de México = National Autonomous University of Mexico [UNAM]
CAMPOS–AMEZCUA, Alfonso
PALACIOS-GALLEGOS, Manuel
REY, Robert
ccBAKIR, Farid
134975 Laboratoire de Dynamique des Fluides [DynFluid]
ccKHELLADI, Sofiane

URI
http://hdl.handle.net/10985/17817
DOI
10.1016/j.applthermaleng.2014.07.063
Date
2015
Journal
Applied Thermal Engineering

Résumé

This work presents the results of numerical simulation of unsteady cavitating flow through a two–bladed axial inducer. First, the analysis was carried out in a blade cascade, this two–dimensional simplified model, obtained from the studied axial inducer, was used as a test case. Later, the numerical simulations were extended to the original three-dimensional inducer. All numerical calculations were realized in cavitating flow regime. Initially, the results were obtained in steady state, and then in unsteady state. The main purpose of this study is to explore the local cavitation instabilities, such as alternate blade cavitation and rotating blade cavitation, which can appear in this type of devices when they work under certain operating conditions. The numerical results show that the fluid flow in the axial inducer is altered by the emergence of the cavitation. These vapor regions are formed, firstly near to the leading edge of each blade. The behavior of the cavitation depends on the operating conditions of the inducer, mainly by the flow rate and the suction pressure. The numerical simulation was performed using a commercial code based on a cell–centered finite–volume method. The cavitation model used for calculations assumes a thermal equilibrium between phases. It is based on the classical conservation equations of the vapor phase and a mixture phase, with mass transfer due to the cavitation appearing as a source and a sink term in the vapor mass fraction equation. The mass transfer rate is derived from a simplified Rayleigh–Plesset model for bubble dynamics.

Fichier(s) constituant cette publication

Nom:
DYNFLUID_ATE_2015_KHELLADI.pdf
Taille:
3.484Mo
Format:
PDF
Description:
Article
Voir/Ouvrir

Cette publication figure dans le(s) laboratoire(s) suivant(s)

  • Dynamique des Fluides (DynFluid)

Documents liés

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

  • Experimental study of hydraulic transport of large particles in horizontal pipes 
    Article dans une revue avec comité de lecture
    REY, Robert; ccRAVELET, Florent; ccBAKIR, Farid; ccKHELLADI, Sofiane (Elsevier, 2013)
    This article presents an experimental study of the hydraulic transport of very large solid particles (above 5 mm) in an horizontal pipe. Two specific masses are used for the solids. The solids are spheres that are large ...
  • Design and Experimental Validation of a Ducted Counter-rotating Axial-flow Fans System 
    Article dans une revue avec comité de lecture
    NOURI, Hussain; ccSARRAF, Christophe; REY, Robert; ccRAVELET, Florent; ccBAKIR, Farid (American Society of Mechanical Engineers, 2012)
    An experimental study on the design of counter-rotating axial-flow fans was carried out. The fans were designed using an inverse method. In particular, the system is designed to have a pure axial discharge flow. The ...
  • Experimental study of aerated cavitation in a horizontal venturi nozzle 
    Article dans une revue avec comité de lecture
    TOMOV, Petar; KHELLADI, Sofiane; RAVELET, Florent; SARRAF, Christophe; BAKIR, Farid; VERTENOEUIL, P. (Elsevier, 2015)
    The injection of bubbles into an already cavitating flow is a way of influencing the typical cavitating behavior. The present article deals with experiments on aerated and non-aerated cavitation in a transparent horizontal ...
  • Experimental and Numerical Analysis of the Flow Inside a Configuration Including an Axial Pump and a Tubular Exchanger 
    Communication avec acte
    SOLIS, Moises; ccRAVELET, Florent; ccBAKIR, Farid; ccKHELLADI, Sofiane (ASME, 2010)
    In centrifugal and axial pumps, the flow is characterized by a turbulent and complex behavior and also by physical mechanisms such as cavitation and pressure fluctuations that are mainly due to the strong interactions ...
  • Experimental investigation of an actively controlled automotive cooling fan using steady air injection in the leakage gap 
    Article dans une revue avec comité de lecture
    AZZAM, Tarik; PARIDAENS, Richard; OUALLI, Hamid; ccRAVELET, Florent; ccBAKIR, Farid; ccKHELLADI, Sofiane (SAGE Publications, 2017)
    In an axial fan, a leakage flow driven by a pressure gradient between the pressure side and the suction side occurs in the gap between the shroud and the casing. This leakage flow is in the opposite direction to the main ...

Parcourir

Tout SAMLaboratoiresAuteursDates de publicationCampus/InstitutsCe LaboratoireAuteursDates de publicationCampus/Instituts

Lettre Diffuser la Science

Dernière lettreVoir plus

Statistiques de consultation

Publications les plus consultéesStatistiques par paysAuteurs les plus consultés

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales