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Erschienen in: Experiments in Fluids 1/2014

01.01.2014 | Research Article

Measurement and decomposition of periodic flow structures downstream of a test turbine

verfasst von: Davide Lengani, Stefan Kindermann, Thorsten Selic, Andreas Marn, Franz Heitmeir

Erschienen in: Experiments in Fluids | Ausgabe 1/2014

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Abstract

This paper shows the experimental methodology which has been employed for the simultaneous aerodynamic and aeroacoustic analysis of a test turbine by means of a fast-response aerodynamic pressure probe. Two different phase references are used to resolve the fluctuations in time of the velocity and the pressure of phenomena occurring at different and unrelated periodicity. The phase-averaged fields are further post-processed by decomposing them into spatial-temporal Fourier coefficients. The deterministic unsteadiness is then simply represented by a limited number of Fourier coefficients, the physical meaning of which is discussed in details. In particular, this approach has been used to distinguish between propagating and non-propagating noise sources.

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Metadaten
Titel
Measurement and decomposition of periodic flow structures downstream of a test turbine
verfasst von
Davide Lengani
Stefan Kindermann
Thorsten Selic
Andreas Marn
Franz Heitmeir
Publikationsdatum
01.01.2014
Verlag
Springer Berlin Heidelberg
Erschienen in
Experiments in Fluids / Ausgabe 1/2014
Print ISSN: 0723-4864
Elektronische ISSN: 1432-1114
DOI
https://doi.org/10.1007/s00348-013-1632-1

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