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Document IIF

Modélisation analytique et à l'aide de la mécanique des fluides numérique de l'écoulement du fluide dans une pompe à huile centrifuge à tubes excentriques pour les compresseurs hermétiques.

Analytical and CFD modeling of the fluid flow in an eccentric-tube centrifugal oil pump for hermetic compressors.

Auteurs : ALVES M. V. C., BARBOSA J. R. Jr, PRATA A. T.

Type d'article : Article, Article de la RIF

Résumé

A model is presented for calculating the volume flow rate in an eccentric-tube centrifugal oil pump for reciprocating compressors. The oil pump assembly consists of a pick-up tube with an inclined inlet that is mounted off-center with the crankshaft symmetry axis. The pick-up tube is connected to the shaft channel, a helical groove machined on the crankshaft that facilitates the supply of lubricant to the bearings. The analytical models for the pick-up tube and shaft channel were developed independently and were coupled via a numerical procedure to determine the steady-state volume flow rate in the assembly. The steady-state results were verified against a CFD model, which was also used to evaluate the fluid flow in the oil pump assembly during a start-up transient. A parametric analysis was conducted to quantify the influence of some oil pump geometric parameters, such as the pick-up tube diameter and the shaft eccentricity.

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Format PDF

Pages : 1905-1915

Disponible

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    20 €

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    Gratuit

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Détails

  • Titre original : Analytical and CFD modeling of the fluid flow in an eccentric-tube centrifugal oil pump for hermetic compressors.
  • Identifiant de la fiche : 30009796
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 7
  • Date d'édition : 11/2013

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