Systematic error of acoustic particle image velocimetry and its correction

• Autorzy: Mickiewicz W.

Identyfikatory

DOI

10.2478/mms-2014-0038

• Języki publikacji: EN

Abstrakty

EN

Particle Image Velocimetry is getting more and more often the method of choice not only for visualization of turbulent mass flows in fluid mechanics, but also in linear and non-linear acoustics for non-intrusive visualization of acoustic particle velocity. Particle Image Velocimetry with low sampling rate (about 15Hz) can be applied to visualize the acoustic field using the acquisition synchronized to the excitation signal. Such phase-locked PIV technique is described and used in experiments presented in the paper. The main goal of research was to propose a model of PIV systematic error due to non-zero time interval between acquisitions of two images of the examined sound field seeded with tracer particles, what affects the measurement of complex acoustic signals. Usefulness of the presented model is confirmed experimentally. The correction procedure, based on the proposed model, applied to measurement data increases the accuracy of acoustic particle velocity field visualization and creates new possibilities in observation of sound fields excited with multi-tonal or band-limited noise signals.

Słowa kluczowe

EN

particle image velocimetry; acoustic measurement; acoustic particle velocity; sound field analysis

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2014
• Tom: Vol. 21, nr 3
• Strony: 447--460
• Opis fizyczny: Bibliogr. 18 poz., rys., tab., wykr.

Twórcy

autor

Mickiewicz W.

• West Pomeranian University of Technology, Szczecin, Faculty of Electrical Engineering, ul. Sikorskiego 31, 70-313 Szczecin, Poland, [phone]

Bibliografia

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