A noise propagation analysis method was employed to evaluate the tone noise emissions of a multistage contra-rotating turbine. This propagation procedure is based on a linearized aeroacoustic solver with non-reflecting boundary conditions. The linearized code is used to evaluate the acoustic response of each single row, while the propagation strategy allows the acoustic waves to propagate across adjacent rows up to the turbine exit. Firstly some numerical results for a conventional turbine are shown and compared with experimental data, then an in-depth analysis of a contra-rotating architecture is presented.

A Linearized Method for Tone Noise Generation and Propagation Analysis in a Multistage Contra-Rotating Turbine / L. Pinelli; F. Poli; M. Marconcini; A. Arnone; C. Schipani; E. Spano; D. Torzo. - STAMPA. - 2:(2011), pp. 1253-1263. (Intervento presentato al convegno 9th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics tenutosi a Istanbul, Turkey nel 21-25 March 2011).

A Linearized Method for Tone Noise Generation and Propagation Analysis in a Multistage Contra-Rotating Turbine

PINELLI, LORENZO;POLI, FRANCESCO;MARCONCINI, MICHELE;ARNONE, ANDREA;
2011

Abstract

A noise propagation analysis method was employed to evaluate the tone noise emissions of a multistage contra-rotating turbine. This propagation procedure is based on a linearized aeroacoustic solver with non-reflecting boundary conditions. The linearized code is used to evaluate the acoustic response of each single row, while the propagation strategy allows the acoustic waves to propagate across adjacent rows up to the turbine exit. Firstly some numerical results for a conventional turbine are shown and compared with experimental data, then an in-depth analysis of a contra-rotating architecture is presented.
2011
9th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics Proceedings
9th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics
Istanbul, Turkey
21-25 March 2011
L. Pinelli; F. Poli; M. Marconcini; A. Arnone; C. Schipani; E. Spano; D. Torzo
File in questo prodotto:
Non ci sono file associati a questo prodotto.

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/2158/416055
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 7
  • ???jsp.display-item.citation.isi??? 2
social impact