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Analytical and CFD modeling of the fluid flow in an eccentric-tube centrifugal oil pump for hermetic compressors / Marcus Vinícius C. Alves in International journal of refrigeration, Vol. 36 N° 7 (Novembre 2013) 

Public ISBD [article]  in International journal of refrigeration > Vol. 36 N° 7 (Novembre 2013) . - pp. 1905–1915 Titre : Analytical and CFD modeling of the fluid flow in an eccentric-tube centrifugal oil pump for hermetic compressors Titre original : Modélisation analytique et à l'aide de la mécanique des fluides numérique de l'écoulement du fluide dans une pompe d'huile centrifuge à tubes excentriques pour les compresseurs hermétiques Type de document : texte imprimé Auteurs : Marcus Vinícius C. Alves, Auteur ; Jader R. Barbosa Jr., Auteur ; Alvaro T. Prata, Auteur Année de publication : 2014 Article en page(s) : pp. 1905–1915 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Reciprocating  compressor;  Lubricant;  Oil;  Pumping;  CFD 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. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712001880 [article] Analytical and CFD modeling of the fluid flow in an eccentric-tube centrifugal oil pump for hermetic compressors = Modélisation analytique et à l'aide de la mécanique des fluides numérique de l'écoulement du fluide dans une pompe d'huile centrifuge à tubes excentriques pour les compresseurs hermétiques [texte imprimé] / Marcus Vinícius C. Alves, Auteur ; Jader R. Barbosa Jr., Auteur ; Alvaro T. Prata, Auteur . - 2014 . - pp. 1905–1915. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 7 (Novembre 2013) . - pp. 1905–1915 Mots-clés : Reciprocating  compressor;  Lubricant;  Oil;  Pumping;  CFD 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. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712001880