| Titre : | Effects of variable thermophysical properties on flow and energy separation in a vortex tube (2014) |
| Titre original : | Effets de propriétés thermophysiques variables sur l'écoulement et la séparation d'énergie dans un tube vortex |
| Auteurs : | A. Ouadha, Auteur ; M. Baghdad, Auteur ; Y. Addad, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | International journal of refrigeration (Vol. 36 N° 8, Décembre 2013) |
| Article en page(s) : | pp. 2426–2437 |
| Note générale : | Refrigeration |
| Langues : | Anglais |
| Tags : | Vortex tube ; Exergy analysis ; RSM model |
| Résumé : | A numerical study has been conducted to investigate the effects of variable fluid properties on the prediction of a basic tube vortex design. Beforehand, a literature review is presented to highlight some of the recent advances in the enhancements of the device design and its efficiency. The three-dimensional computations with constant and variable properties revealed that the constant thermophysical assumption might not have a dramatic effect if the aim is to predict global values only, but extra caution should be taken for an in-depth flow assessment. The exergy analysis conducted suggests that the highest exergy efficiency, for the current device design, ranges from 38% to 46% depending on the inlet pressure value. Based on the current numerical analysis; rather large exergy losses are due to irreversibility occurring at either; the lowest or the highest cold mass fraction boundary conditions. |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S0140700713001965 |
