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

Submitted by admin on Mon, 07/04/2011 - 15:44
TitleA Linearized Method for Tone Noise Generation and Propagation Analysis in a Multistage Contra-Rotating Turbine
Publication TypeConference Proceedings
Year of Publication2011
AuthorsPinelli L, Poli F, Marconcini M, Arnone A, Schipani C, Spano E, Torzo D
Conference Name9th European Turbomachinery Conference (ETC9)
Pagination1253–1263
PublisherEUROPEAN TURBOMACHINERY SOC-EUROTURBO, C/O DEPT INDUSTRIAL ENG, VIA SANTA MARTA, C F 94213000485, FLORENCE, 3 50139, ITALY
Conference LocationIstanbul, Turkey, 21-25 March, 2011
ISBN Number978-975-561-389-5
Accession NumberWOS:000375695300100
Other NumbersScopus 2-s2.0-84884947432
KeywordsContra-Rotating Turbine, Noise Propagation, Tone Noise
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.
Notes

Istanbul, Turkey, 21-25 March 2011