Abstract Rotating stall in centrifugal compressors is an attractive topic both for academic research and industrial applications. Its complex phenomenology requires detailed and advanced analyses to improve the understanding of the physical mechanisms responsible for its development. From such an investigation, benefits can also come for the design of more efficiently performing industrial compressors. In this context, an activity was planned focusing on the comprehension and characterization of rotating stall for a group of industrial centrifugal stages with a low blade-outlet-width-toimpeller-radius ratio for very high pressure applications. These are generally equipped with vaneless diffusers. In order to improve stage stability, the use of low solidity vaned diffusers (LSD) seems to be a very useful approach. Starting from results obtained for a previous set of LSD, new sets of configurations were tested in order to analyze in detail the influence of vane solidity, inlet radius and incidence at design point on performance and design point. Results are compared with those of the vaneless solution highlighting improvements and drawbacks.

Low solidity vaned diffusers for rotating stall prevention: experimental analysis of some design parameters / G. FERRARA; L. FERRARI; L. BALDASSARRE. - STAMPA. - (2004), pp. 1-8. (Intervento presentato al convegno ASME TURBO EXPO tenutosi a Vienna, Austria nel 14-17 June 2004).

Low solidity vaned diffusers for rotating stall prevention: experimental analysis of some design parameters

FERRARA, GIOVANNI;FERRARI, LORENZO;
2004

Abstract

Abstract Rotating stall in centrifugal compressors is an attractive topic both for academic research and industrial applications. Its complex phenomenology requires detailed and advanced analyses to improve the understanding of the physical mechanisms responsible for its development. From such an investigation, benefits can also come for the design of more efficiently performing industrial compressors. In this context, an activity was planned focusing on the comprehension and characterization of rotating stall for a group of industrial centrifugal stages with a low blade-outlet-width-toimpeller-radius ratio for very high pressure applications. These are generally equipped with vaneless diffusers. In order to improve stage stability, the use of low solidity vaned diffusers (LSD) seems to be a very useful approach. Starting from results obtained for a previous set of LSD, new sets of configurations were tested in order to analyze in detail the influence of vane solidity, inlet radius and incidence at design point on performance and design point. Results are compared with those of the vaneless solution highlighting improvements and drawbacks.
2004
2004 ASME Turbo Expo
ASME TURBO EXPO
Vienna, Austria
14-17 June 2004
G. FERRARA; L. FERRARI; L. BALDASSARRE
File in questo prodotto:
File Dimensione Formato  
IGTI2004-54146_final.pdf

Accesso chiuso

Tipologia: Altro
Licenza: Tutti i diritti riservati
Dimensione 494.47 kB
Formato Adobe PDF
494.47 kB Adobe PDF   Richiedi una copia

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/318374
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact