Characterization of Supersonic Compressible Fluid Flow Using High-Speed Interferometry
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 nonintrusi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/23/8158 |
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| author | Pavel Psota Gramoz Çubreli Jindřich Hála David Šimurda Petr Šidlof Jan Kredba Marek Stašík Vít Lédl Michal Jiránek Martin Luxa Jan Lepicovsky |
| author_facet | Pavel Psota Gramoz Çubreli Jindřich Hála David Šimurda Petr Šidlof Jan Kredba Marek Stašík Vít Lédl Michal Jiránek Martin Luxa Jan Lepicovsky |
| author_sort | Pavel Psota |
| collection | DOAJ |
| description | 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 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>50</mn><mo> </mo><mrow><mi mathvariant="sans-serif">μ</mi><mi mathvariant="normal">m</mi></mrow></mrow></semantics></math></inline-formula>. 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. |
| first_indexed | 2024-03-10T04:44:25Z |
| format | Article |
| id | doaj.art-6bae7a01019d4bdd94c016b571ae494d |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T04:44:25Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-6bae7a01019d4bdd94c016b571ae494d2023-11-23T03:04:47ZengMDPI AGSensors1424-82202021-12-012123815810.3390/s21238158Characterization of Supersonic Compressible Fluid Flow Using High-Speed InterferometryPavel Psota0Gramoz Çubreli1Jindřich Hála2David Šimurda3Petr Šidlof4Jan Kredba5Marek Stašík6Vít Lédl7Michal Jiránek8Martin Luxa9Jan Lepicovsky10Faculty of Mechatronics, Informatics and Interdisciplinary Studies, Technical University of Liberec, Studentská 2, 461 17 Liberec, Czech RepublicFaculty of Mechatronics, Informatics and Interdisciplinary Studies, Technical University of Liberec, Studentská 2, 461 17 Liberec, Czech RepublicInstitute of Thermomechanics of the Czech Academy of Sciences, Dolejškova 1402/5, 182 00 Praha, Czech RepublicInstitute of Thermomechanics of the Czech Academy of Sciences, Dolejškova 1402/5, 182 00 Praha, Czech RepublicFaculty of Mechatronics, Informatics and Interdisciplinary Studies, Technical University of Liberec, Studentská 2, 461 17 Liberec, Czech RepublicFaculty of Mechatronics, Informatics and Interdisciplinary Studies, Technical University of Liberec, Studentská 2, 461 17 Liberec, Czech RepublicFaculty of Mechatronics, Informatics and Interdisciplinary Studies, Technical University of Liberec, Studentská 2, 461 17 Liberec, Czech RepublicFaculty of Mechatronics, Informatics and Interdisciplinary Studies, Technical University of Liberec, Studentská 2, 461 17 Liberec, Czech RepublicFaculty of Mechatronics, Informatics and Interdisciplinary Studies, Technical University of Liberec, Studentská 2, 461 17 Liberec, Czech RepublicInstitute of Thermomechanics of the Czech Academy of Sciences, Dolejškova 1402/5, 182 00 Praha, Czech RepublicInstitute of Thermomechanics of the Czech Academy of Sciences, Dolejškova 1402/5, 182 00 Praha, Czech RepublicThis 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 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>50</mn><mo> </mo><mrow><mi mathvariant="sans-serif">μ</mi><mi mathvariant="normal">m</mi></mrow></mrow></semantics></math></inline-formula>. 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.https://www.mdpi.com/1424-8220/21/23/8158high-speedinterferometrysupersoniccompressible flowwind tunnel |
| spellingShingle | Pavel Psota Gramoz Çubreli Jindřich Hála David Šimurda Petr Šidlof Jan Kredba Marek Stašík Vít Lédl Michal Jiránek Martin Luxa Jan Lepicovsky Characterization of Supersonic Compressible Fluid Flow Using High-Speed Interferometry Sensors high-speed interferometry supersonic compressible flow wind tunnel |
| title | Characterization of Supersonic Compressible Fluid Flow Using High-Speed Interferometry |
| title_full | Characterization of Supersonic Compressible Fluid Flow Using High-Speed Interferometry |
| title_fullStr | Characterization of Supersonic Compressible Fluid Flow Using High-Speed Interferometry |
| title_full_unstemmed | Characterization of Supersonic Compressible Fluid Flow Using High-Speed Interferometry |
| title_short | Characterization of Supersonic Compressible Fluid Flow Using High-Speed Interferometry |
| title_sort | characterization of supersonic compressible fluid flow using high speed interferometry |
| topic | high-speed interferometry supersonic compressible flow wind tunnel |
| url | https://www.mdpi.com/1424-8220/21/23/8158 |
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