Herein, a new passive control system for limiting cavitation inside turbomachinery has been applied to a NACA0009 hydrofoil. The basic idea is to introduce slots nearby its leading edge, connecting pressure and suction sides of the hydrofoil, in order to increase locally the pressure on its suction side and to prevent cavitation from developing. The cavitating flow developed around a two-dimensional hydrofoil is here considered since it is an archetype of cavitation nearby the leading edges of the impeller vanes. Thus, the flow field developed at the leading edge of both the original and modified hydrofoil has been studied at different angles of attack in order to reproduce a wide range of operating conditions that occur inside turbomachinery. Eventually, a comparison of their performance in terms of polars (CL and CD) and vapour volume fractions (αv) is performed.
Investigation of a passive control system for limiting cavitation inside turbomachinery under different operating conditions / Capurso, T.; Menchise, G.; Caramia, G.; Camporeale, S. M.; Fortunato, B.; Torresi, M.. - In: ENERGY PROCEDIA. - ISSN 1876-6102. - ELETTRONICO. - 148:(2018), pp. 416-423. (Intervento presentato al convegno 73rd Conference of the Italian Thermal Machines Engineering Association, ATI 2018 tenutosi a Pisa, Italy nel September 12-14, 2018) [10.1016/j.egypro.2018.08.103].
Investigation of a passive control system for limiting cavitation inside turbomachinery under different operating conditions
Capurso T.;Caramia G.;Camporeale S. M.;Fortunato B.;Torresi M.
2018-01-01
Abstract
Herein, a new passive control system for limiting cavitation inside turbomachinery has been applied to a NACA0009 hydrofoil. The basic idea is to introduce slots nearby its leading edge, connecting pressure and suction sides of the hydrofoil, in order to increase locally the pressure on its suction side and to prevent cavitation from developing. The cavitating flow developed around a two-dimensional hydrofoil is here considered since it is an archetype of cavitation nearby the leading edges of the impeller vanes. Thus, the flow field developed at the leading edge of both the original and modified hydrofoil has been studied at different angles of attack in order to reproduce a wide range of operating conditions that occur inside turbomachinery. Eventually, a comparison of their performance in terms of polars (CL and CD) and vapour volume fractions (αv) is performed.File | Dimensione | Formato | |
---|---|---|---|
1-s2.0-S1876610218303965-main.pdf
accesso aperto
Tipologia:
Versione editoriale
Licenza:
Creative commons
Dimensione
1.28 MB
Formato
Adobe PDF
|
1.28 MB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.