Turbine blade boundary layer separation suppression via synthetic jet: An experimental and numerical study.

Chiara Bernardini, Mauro Carnevale, Marcello Manna, Francesco Martelli, Daniele Simoni, Pietro Zunino

Research output: Contribution to journalArticlepeer-review

12 Citations (SciVal)

Abstract

The present paper focuses on the analysis of a synthetic jet device (with a zero net massflow rate) on a separated boundary layer. Separation has been obtained on a flat plate installed within a converging-diverging test section specifically designed to attain a local velocity distribution typical of a high-lift LPT blade. Both experimental and numerical investigations have been carried out. Unsteady RANS results have been compared with experiments in terms of time-averaged velocity and turbulence intensity distributions. Two different Reynolds number cases have been investigated, namely Re = 200, 000 and Re = 70, 000, which characterize low-pressure turbine operating conditions during take-off/landing and cruise. A range of synthetic jet aerodynamic parameters (Strouhal number and blowing ratio) has been tested in order to analyze the features of control — separated boundary layer interaction for the aforementioned Reynolds numbers.
Original languageEnglish
Pages (from-to)404-412
JournalJournal of Thermal Science
Volume21
DOIs
Publication statusPublished - 1 Oct 2012

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