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Characterization of Supersonic Compressible Fluid Flow Using High-Speed Interferometry
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SYSNO ASEP 0549593 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Characterization of Supersonic Compressible Fluid Flow Using High-Speed Interferometry Author(s) Psota, P. (CZ)
Cubreli, G. (CZ)
Hála, Jindřich (UT-L) RID, ORCID
Šimurda, David (UT-L) RID, ORCID
Šidlof, P. (CZ)
Kredba, J. (CZ)
Stašík, M. (CZ)
Lédl, V. (CZ)
Jiránek, M. (CZ)
Luxa, Martin (UT-L) RID, ORCID
Lepičovský, Jan (UT-L) ORCIDArticle number 8158 Source Title Sensors. - : MDPI
Roč. 21, č. 23 (2021)Number of pages 14 s. Publication form Online - E Language eng - English Country CH - Switzerland Keywords high-speed ; interferometry ; supersonic ; compressible flow ; wind tunnel Subject RIV BK - Fluid Dynamics OECD category Applied mechanics R&D Projects LTAUSA19036 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UT-L - RVO:61388998 UT WOS 000735134400001 EID SCOPUS 85120627902 DOI 10.3390/s21238158 Annotation This paper presents a very effective interference technique for the sensing and researching of compressible fluid flow in a wind tunnel facility. The developed technique is very sensitive and accurate, yet easy to use under conditions typical for aerodynamic labs, and will be used for the nonintrusive investigation of flutter in blade cascades. The interferometer employs a high-speed camera, fiber optics, and available “of-the-shelf” optics and optomechanics. The construction of the interferometer together with the fiber optics ensures the high compactness and portability of the system. Moreover, single-shot quantitative data processing based on introducing a spatial carrier frequency and Fourier analysis allows for almost real-time quantitative processing. As a validation case, the interferometric system was successfully applied in the research of supersonic compressible fluid discharge from a narrow channel in a wind tunnel. Density distributions were quantitatively analyzed with the spatial resolution of about 50 μm. The results of the measurement revealed important features of the flow pattern. Moreover, the measurement results were compared with Computational Fluid Dynamics (CFD) simulations with a good agreement. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2022 Electronic address https://www.mdpi.com/1424-8220/21/23/8158/htm
Number of the records: 1