| Titre : | Application of realizability and shock unsteadiness to k−ε simulations of under-expanded axisymmetric supersonic free jets (2010) |
| Auteurs : | Babak Emami, Auteur ; Markus Bussmann, Auteur ; Honghi Tran, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Transactions of the ASME . Journal of fluids engineering (Vol. 132 N° 4, Avril 2010) |
| Article en page(s) : | 07 p. |
| Note générale : | fluids engineering |
| Langues : | Anglais |
| Tags : | compressibility ; mach number ; turbulence ; eddies (fluid dynamics) ; viscosity ; shock waves ; jets ; (mechanics) ; engineering simulation ; equations |
| Résumé : | An explicit cell-centered finite volume solver coupled to a k−ε turbulence model corrected for structural compressibility fails to satisfactorily predict the behavior of under-expanded supersonic jets exhausting into still air, because the model does not properly account for the turbulence/shock wave interaction. Two approaches are examined: imposing a realizability constraint and taking into account shock unsteadiness effects. Although both corrections yield better agreement with experimental data of under-expanded jets, the realizability constraint yields better results than the shock unsteadiness correction. |
| DEWEY : | 620.1 |
| ISSN : | 0098-2202 |
| En ligne : | http://fluidsengineering.asmedigitalcollection.asme.org/issue.aspx?journalid=122&issueid=27414 |
