| Titre : | Hysteresis curve in reproduction of Reynolds’ color-band experiments (2009) |
| Auteurs : | Hidesada Kanda, Auteur ; Takayuki Yanagiya, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Transactions of the ASME . Journal of fluids engineering (Vol. 130 N° 5, Mai 2008) |
| Article en page(s) : | 10 p. |
| Note générale : | Fluids engineering |
| Langues : | Anglais |
| Tags : | Flow (dynamics) ; turbulence ; pipes ; water ; shapes ; pipe flow ; valves ; Reynolds number ; drops ; laminar flow |
| Résumé : | This article describes the reproduction and extended analysis of Reynolds’ color-band experiment. Reynolds found two critical Reynolds numbers (Rc) in pipe flows: Rc1 of 12,830 from laminar to turbulent flow and Rc2 of 2030 from turbulent to laminar flow. Since no clear relationship has been established between them, we studied how the entrance shape affects Rc. Thus, for the first time, a hysteresis graph can be drawn by connecting the two curves of Rc1 and Rc2 such that the two Rc values lie on separate branches of the hysteresis plot. |
| En ligne : | http://fluidsengineering.asmedigitalcollection.asme.org/issue.aspx?journalid=122&issueid=27312 |
