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Document IIF

Méthodologie pour prédire le calage provoqué par la contre-pression dans les pompes à jet à éjecteur.

A methodology for the prediction of back-pressure induced stall in eductor-jet pumps.

Auteurs : JIGE D., KIKUCHI S., HIKARU E., et al.

Type d'article : Article, Article de la RIF

Résumé

Eductor-jet pumps are used to transfer large quantities of fluids using a high-pressure fluid source without the need for moving parts, such as motors and impellers. The pump operates by creating the Venturi effect inside a convergent-divergent nozzle. These pumps can stall when a back pressure develops at the outlet. In this paper, the critical condition at which the stall occurs is determined by comparing the thrust force from the jets of the pump to the opposing force caused by backpressure at the pump outlet. This methodology predicts the stall conditions for both over-expanded and under-expanded flow conditions. The motive gas pressure and the backpressure ratios at which stall occurs is dependent upon the pump geometry, fluid properties, and the pump operating conditions. Experiments conducted on a 3D printed and a commercially available pump, as well as 3D computational fluid dynamics analyses, enabled verification of the proposed methodology.

Documents disponibles

Format PDF

Pages : 165-174

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : A methodology for the prediction of back-pressure induced stall in eductor-jet pumps.
  • Identifiant de la fiche : 30025195
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 95
  • Date d'édition : 11/2018
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2018.08.007

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