Flow and Cavity Measurements in a Super-Cavitating Propeller
The design of super-cavitating propellers takes advantage of the development of air cavities on the blades’ surface to reduce drag and, ultimately, increase efficiency. The mechanism of flow modification induced by the development of a cavity on the propeller blades was investigated experimentally v...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/12/2/243 |
| _version_ | 1797297787774173184 |
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| author | Alessandro Capone Francisco Alves Pereira Fabio Di Felice |
| author_facet | Alessandro Capone Francisco Alves Pereira Fabio Di Felice |
| author_sort | Alessandro Capone |
| collection | DOAJ |
| description | The design of super-cavitating propellers takes advantage of the development of air cavities on the blades’ surface to reduce drag and, ultimately, increase efficiency. The mechanism of flow modification induced by the development of a cavity on the propeller blades was investigated experimentally via phase-locked laser Doppler velocimetry measurements. A large cavity extending beyond the blades’ trailing edge and enclosing the back of the blades was identified at high loading conditions. A robust methodology to quantitatively analyze the size of the cavity is presented. The analysis of the flow fields showed that, under fully developed cavitation conditions, the acceleration of the axial and tangential flow in the inter-blade region was observed, accompanied by a reduction in tip-vortex development. |
| first_indexed | 2024-03-07T22:25:26Z |
| format | Article |
| id | doaj.art-2652922b22a34e609d845006a001e730 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-07T22:25:26Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-2652922b22a34e609d845006a001e7302024-02-23T15:23:05ZengMDPI AGJournal of Marine Science and Engineering2077-13122024-01-0112224310.3390/jmse12020243Flow and Cavity Measurements in a Super-Cavitating PropellerAlessandro Capone0Francisco Alves Pereira1Fabio Di Felice2CNR-Institute of Marine Engineering, Via di Vallerano 139, 00128 Rome, ItalyCNR-Institute of Marine Engineering, Via di Vallerano 139, 00128 Rome, ItalyCNR-Institute of Marine Engineering, Via di Vallerano 139, 00128 Rome, ItalyThe design of super-cavitating propellers takes advantage of the development of air cavities on the blades’ surface to reduce drag and, ultimately, increase efficiency. The mechanism of flow modification induced by the development of a cavity on the propeller blades was investigated experimentally via phase-locked laser Doppler velocimetry measurements. A large cavity extending beyond the blades’ trailing edge and enclosing the back of the blades was identified at high loading conditions. A robust methodology to quantitatively analyze the size of the cavity is presented. The analysis of the flow fields showed that, under fully developed cavitation conditions, the acceleration of the axial and tangential flow in the inter-blade region was observed, accompanied by a reduction in tip-vortex development.https://www.mdpi.com/2077-1312/12/2/243cavitationlaser Doppler velocimetrypropeller |
| spellingShingle | Alessandro Capone Francisco Alves Pereira Fabio Di Felice Flow and Cavity Measurements in a Super-Cavitating Propeller Journal of Marine Science and Engineering cavitation laser Doppler velocimetry propeller |
| title | Flow and Cavity Measurements in a Super-Cavitating Propeller |
| title_full | Flow and Cavity Measurements in a Super-Cavitating Propeller |
| title_fullStr | Flow and Cavity Measurements in a Super-Cavitating Propeller |
| title_full_unstemmed | Flow and Cavity Measurements in a Super-Cavitating Propeller |
| title_short | Flow and Cavity Measurements in a Super-Cavitating Propeller |
| title_sort | flow and cavity measurements in a super cavitating propeller |
| topic | cavitation laser Doppler velocimetry propeller |
| url | https://www.mdpi.com/2077-1312/12/2/243 |
| work_keys_str_mv | AT alessandrocapone flowandcavitymeasurementsinasupercavitatingpropeller AT franciscoalvespereira flowandcavitymeasurementsinasupercavitatingpropeller AT fabiodifelice flowandcavitymeasurementsinasupercavitatingpropeller |