Vortices in the wake past adjustable car spoiler in open and closed configuration studied experimentally by PIV
A complex adjustable car spoiler opens or closes in dependence on ride properties: the closed state increases negative lift (better for curves), while the open state ensures lower drag (better for straight segments of the road). Both these configurations are studied by using Particle Image Velocime...
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| Format: | Article |
| Language: | English |
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CTU Central Library
2025-07-01
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| Series: | Acta Polytechnica |
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| Online Access: | https://ojs.cvut.cz/ojs/index.php/ap/article/view/10147 |
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| author | Vojtěch Janský Zdeněk Hejda Daniel Duda Vitalii Yanovych Václav Uruba |
| author_facet | Vojtěch Janský Zdeněk Hejda Daniel Duda Vitalii Yanovych Václav Uruba |
| author_sort | Vojtěch Janský |
| collection | DOAJ |
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A complex adjustable car spoiler opens or closes in dependence on ride properties: the closed state increases negative lift (better for curves), while the open state ensures lower drag (better for straight segments of the road). Both these configurations are studied by using Particle Image Velocimetry method in a wind tunnel at model scale. The three measured planes are perpendicular to the main flow. The wake is characterised by upwind (stronger past the closed variant) and by a pair of wing-tip vortices, although the spoiler wing has no end, it is rounded downwards instead. These vortices are stronger past the closed variant, they migrate towards each other, while their positions correlate by about 30 %. The circulations of both vortices are strongly correlated by about 90 % for the closed case, while this correlations is much smaller (∼25 %) for the open case.
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| format | Article |
| id | doaj-art-79d6312d6a9940d28e4e98dfbbd70d08 |
| institution | Matheson Library |
| issn | 1805-2363 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | CTU Central Library |
| record_format | Article |
| series | Acta Polytechnica |
| spelling | doaj-art-79d6312d6a9940d28e4e98dfbbd70d082025-07-11T06:40:22ZengCTU Central LibraryActa Polytechnica1805-23632025-07-0165310.14311/AP.2025.65.0288Vortices in the wake past adjustable car spoiler in open and closed configuration studied experimentally by PIVVojtěch Janský0Zdeněk Hejda1Daniel Duda2Vitalii Yanovych3https://orcid.org/0000-0002-8152-7124Václav Uruba4University of West Bohemia in Pilsen, Faculty of Mechanical Engineering, Univerzitní 22, 306 14 Pilsen, Czech RepublicŠkoda Auto University, Department of Machinery and Electrotechnics, 160 00 Prague, Czech RepublicUniversity of West Bohemia in Pilsen, Faculty of Mechanical Engineering, Univerzitní 22, 306 14 Pilsen, Czech RepublicUniversity of West Bohemia in Pilsen, Faculty of Mechanical Engineering, Univerzitní 22, 306 14 Pilsen, Czech Republic; Research and Testing Institute Pilsen, Tylova 46, 301 00 Pilsen, Czech RepublicUniversity of West Bohemia in Pilsen, Faculty of Mechanical Engineering, Univerzitní 22, 306 14 Pilsen, Czech Republic; Czech Academy of Sciences, Institute of Thermomechanics, Dolejškova 15, 180 00 Prague, Czech Republic A complex adjustable car spoiler opens or closes in dependence on ride properties: the closed state increases negative lift (better for curves), while the open state ensures lower drag (better for straight segments of the road). Both these configurations are studied by using Particle Image Velocimetry method in a wind tunnel at model scale. The three measured planes are perpendicular to the main flow. The wake is characterised by upwind (stronger past the closed variant) and by a pair of wing-tip vortices, although the spoiler wing has no end, it is rounded downwards instead. These vortices are stronger past the closed variant, they migrate towards each other, while their positions correlate by about 30 %. The circulations of both vortices are strongly correlated by about 90 % for the closed case, while this correlations is much smaller (∼25 %) for the open case. https://ojs.cvut.cz/ojs/index.php/ap/article/view/10147carspoilerwind tunnelparticle image velocimetrywakevortex |
| spellingShingle | Vojtěch Janský Zdeněk Hejda Daniel Duda Vitalii Yanovych Václav Uruba Vortices in the wake past adjustable car spoiler in open and closed configuration studied experimentally by PIV Acta Polytechnica car spoiler wind tunnel particle image velocimetry wake vortex |
| title | Vortices in the wake past adjustable car spoiler in open and closed configuration studied experimentally by PIV |
| title_full | Vortices in the wake past adjustable car spoiler in open and closed configuration studied experimentally by PIV |
| title_fullStr | Vortices in the wake past adjustable car spoiler in open and closed configuration studied experimentally by PIV |
| title_full_unstemmed | Vortices in the wake past adjustable car spoiler in open and closed configuration studied experimentally by PIV |
| title_short | Vortices in the wake past adjustable car spoiler in open and closed configuration studied experimentally by PIV |
| title_sort | vortices in the wake past adjustable car spoiler in open and closed configuration studied experimentally by piv |
| topic | car spoiler wind tunnel particle image velocimetry wake vortex |
| url | https://ojs.cvut.cz/ojs/index.php/ap/article/view/10147 |
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