| Titre : | Analytical and CFD modeling of the fluid flow in an eccentric-tube centrifugal oil pump for hermetic compressors (2014) |
| 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 |
| Auteurs : | Marcus Vinícius C. Alves, Auteur ; Jader R. Barbosa Jr., Auteur ; Alvaro T. Prata, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | International journal of refrigeration (Vol. 36 N° 7, Novembre 2013) |
| Article en page(s) : | pp. 1905–1915 |
| Note générale : | Refrigeration |
| Langues : | Anglais |
| Tags : | 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 |
