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Modélisation analytique et par mécanique des fluides numérique de l'écoulement du fluide dans une pompe à huile centrifuge à tube excentré pour compresseurs hermétiques.

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

Numéro : pap. 1127

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

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 steadystate volume flow rate in the assembly. The steady-state results were verified against a CFD model, which was also used to evaluate the oil flow in the pump assembly during a start-up transient. A parametric analysis was conducted to quantify the influence of the pump geometric parameters, i.e., the pick-up tube diameter and the shaft eccentricity.

Documents disponibles

Format PDF

Pages : 10 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

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

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 : 30007533
  • Langues : Anglais
  • Source : 2012 Purdue Conferences. 21st International Compressor Engineering Conference at Purdue.
  • Date d'édition : 16/07/2012

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