Documents disponibles écrits par cet auteur

Fluid flow in a screw pump oil supply system for reciprocating compressors / Marcus V. C. Alves in International journal of refrigeration, Vol. 34 N° 1 (Janvier 2011) 

Public ISBD [article]  in International journal of refrigeration > Vol. 34 N° 1 (Janvier 2011) . - pp. 74-83 Titre : Fluid flow in a screw pump oil supply system for reciprocating compressors Titre original : Ecoulement du fluide dans le système d'alimentation en huile des pompes à vis de compresseurs à piston Type de document : texte imprimé Auteurs : Marcus V. C. Alves, Auteur ; Jader R. Barbosa Jr., Auteur ; Alvaro T. Prata, Auteur Année de publication : 2011 Article en page(s) : pp. 74-83 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Reciprocating  compressor  Lubricant  Oil  Pump  Screw-design  Modelling-optimisation Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This work presents a mathematical analysis of an oil supply system for reciprocating compressors. The system is based on a single screw pump attached to the bottom end of the vertical rotating shaft immersed in the oil sump. The fluid flow in the pump was modeled with a semi-analytical approach based on the solution for the laminar fully developed oil flow in a screw extruder via the Generalized Integral Transform Technique. The screw pump model is coupled with that for the flow in the shaft region so as to provide an estimate of the oil flow rate and of the so-called ‘climbing-time’, i.e., the amount of time needed for a fluid particle to travel from the oil sump to the top of the shaft. The calculation method was verified against experimental data and Computational Fluid Dynamics modeling results. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710001751 [article] Fluid flow in a screw pump oil supply system for reciprocating compressors = Ecoulement du fluide dans le système d'alimentation en huile des pompes à vis de compresseurs à piston [texte imprimé] / Marcus V. C. Alves, Auteur ; Jader R. Barbosa Jr., Auteur ; Alvaro T. Prata, Auteur . - 2011 . - pp. 74-83. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 34 N° 1 (Janvier 2011) . - pp. 74-83 Mots-clés : Reciprocating  compressor  Lubricant  Oil  Pump  Screw-design  Modelling-optimisation Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This work presents a mathematical analysis of an oil supply system for reciprocating compressors. The system is based on a single screw pump attached to the bottom end of the vertical rotating shaft immersed in the oil sump. The fluid flow in the pump was modeled with a semi-analytical approach based on the solution for the laminar fully developed oil flow in a screw extruder via the Generalized Integral Transform Technique. The screw pump model is coupled with that for the flow in the shaft region so as to provide an estimate of the oil flow rate and of the so-called ‘climbing-time’, i.e., the amount of time needed for a fluid particle to travel from the oil sump to the top of the shaft. The calculation method was verified against experimental data and Computational Fluid Dynamics modeling results. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710001751