| Titre : | A runback criterion for water drops in a turbulent accelerated boundary layer (2009) |
| Auteurs : | Edward B. White, Auteur ; Jason A. Schmucker, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Transactions of the ASME . Journal of fluids engineering (Vol. 130 N° 6, Juin 2008) |
| Article en page(s) : | 6 p. |
| Note générale : | Fluids engineering |
| Langues : | Anglais |
| Tags : | Aerodynamic boundary layers ; runback threshold |
| Résumé : | Predicting the runback threshold for liquid drops in aerodynamic boundary layers is a challenging problem with numerous applications including aircraft icing simulations. The critical parameters that govern drop runback are investigated in this experiment by using a wind tunnel that provides a turbulent accelerated flow similar to flows near an unswept wing’s leading edge. The experiments feature water drops on aluminum with a contact angle of 70±5deg. Results show that significant water∕air interface unsteadiness precedes drop runback. This is likely due to air-flow separation in the drop wakes. For displacement-thickness-scaled Reynolds numbers ranging from 348 to 429, a constant-Weber-number runback threshold We=3.45±0.09 is found to adequately correlate the runback results. |
| En ligne : | http://fluidsengineering.asmedigitalcollection.asme.org/Issue.aspx?issueID=27318&direction=P |
