Investigation of the Effect of Rope Cutter on Water Flow behind Ship Propellers Based on CFD Analysis
Small vessels operating in coastal waters are susceptible to propeller failure because of the entanglement of marine debris. Secondary accidents such as the injury of divers may also occur when removing entangling material. Rope cutters are devices used to prevent marine litter from entangling the p...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Machines |
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| Online Access: | https://www.mdpi.com/2075-1702/10/5/300 |
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| author | Antony John Nyongesa Van Chien Pham Sung Hwan Yoon Woo-Seok Kwon Jun-Soo Kim Duy Nam Ngo Jae-Hyuk Choi Young-Yun Sul Won-Ju Lee |
| author_facet | Antony John Nyongesa Van Chien Pham Sung Hwan Yoon Woo-Seok Kwon Jun-Soo Kim Duy Nam Ngo Jae-Hyuk Choi Young-Yun Sul Won-Ju Lee |
| author_sort | Antony John Nyongesa |
| collection | DOAJ |
| description | Small vessels operating in coastal waters are susceptible to propeller failure because of the entanglement of marine debris. Secondary accidents such as the injury of divers may also occur when removing entangling material. Rope cutters are devices used to prevent marine litter from entangling the propeller of small ships. However, installing rope cutters on propeller shafts might affect the working of the propeller. In this study, three-dimensional simulations were performed to investigate the effect of a rope cutter on flow characteristics behind the propeller. The Computational fluid dynamics (CFD) models were validated by particle image velocimetry (PIV) experiments performed in a rope cutter performance testing tank. The study results showed that the installation of a rope cutter on the propeller shaft led to an insignificant reduction in water flow velocity magnitude behind the propeller. Additionally, the effects of the rope cutter on the reductions of thrust (0.87%) and torque (0.76%) of the propeller were also negligible. However, it is very interesting to note that rope cutter installation resulted in a lower vortex formation, leading to a significant reduction in the turbulence intensity behind the propeller by 27.12%, 37.50%, and 47.29% at 100, 150, and 200 rpm propeller speed, respectively. Based on the study results, it can be concluded that rope cutters help to reduce propeller entanglements without significantly affecting the propeller’s working. |
| first_indexed | 2024-03-10T03:33:19Z |
| format | Article |
| id | doaj.art-edb2ddc82b604f1f8b2ec4baa4ce0694 |
| institution | Directory Open Access Journal |
| issn | 2075-1702 |
| language | English |
| last_indexed | 2024-03-10T03:33:19Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Machines |
| spelling | doaj.art-edb2ddc82b604f1f8b2ec4baa4ce06942023-11-23T11:51:57ZengMDPI AGMachines2075-17022022-04-0110530010.3390/machines10050300Investigation of the Effect of Rope Cutter on Water Flow behind Ship Propellers Based on CFD AnalysisAntony John Nyongesa0Van Chien Pham1Sung Hwan Yoon2Woo-Seok Kwon3Jun-Soo Kim4Duy Nam Ngo5Jae-Hyuk Choi6Young-Yun Sul7Won-Ju Lee8Graduate School of Korea Maritime and Ocean University, 727, Taejong-ro, Yeongdo-gu, Busan 49112, KoreaInterdisciplinary Major of Maritime AI Convergence, Korea Maritime and Ocean University, 727, Taejong-ro, Yeongdo-gu, Busan 49112, KoreaInterdisciplinary Major of Maritime AI Convergence, Korea Maritime and Ocean University, 727, Taejong-ro, Yeongdo-gu, Busan 49112, KoreaKorean Register, Busan 46762, KoreaKorea Institute of Maritime and Fisheries Technology, 367, Haeyang-ro, Yeongdo-gu, Busan 49111, KoreaMaritime Academy, Ho Chi Minh City University of Transport, No.2, Vo Oanh Str., Binh Thanh Dist., Ho Chi Minh 717400, VietnamDivision of Marine System Engineering, Korea Maritime and Ocean University, 727, Taejong-ro, Yeongdo-gu, Busan 49112, KoreaSpursmtech Inc., Busan 49111, KoreaInterdisciplinary Major of Maritime AI Convergence, Korea Maritime and Ocean University, 727, Taejong-ro, Yeongdo-gu, Busan 49112, KoreaSmall vessels operating in coastal waters are susceptible to propeller failure because of the entanglement of marine debris. Secondary accidents such as the injury of divers may also occur when removing entangling material. Rope cutters are devices used to prevent marine litter from entangling the propeller of small ships. However, installing rope cutters on propeller shafts might affect the working of the propeller. In this study, three-dimensional simulations were performed to investigate the effect of a rope cutter on flow characteristics behind the propeller. The Computational fluid dynamics (CFD) models were validated by particle image velocimetry (PIV) experiments performed in a rope cutter performance testing tank. The study results showed that the installation of a rope cutter on the propeller shaft led to an insignificant reduction in water flow velocity magnitude behind the propeller. Additionally, the effects of the rope cutter on the reductions of thrust (0.87%) and torque (0.76%) of the propeller were also negligible. However, it is very interesting to note that rope cutter installation resulted in a lower vortex formation, leading to a significant reduction in the turbulence intensity behind the propeller by 27.12%, 37.50%, and 47.29% at 100, 150, and 200 rpm propeller speed, respectively. Based on the study results, it can be concluded that rope cutters help to reduce propeller entanglements without significantly affecting the propeller’s working.https://www.mdpi.com/2075-1702/10/5/300marine debrispropeller entanglementrope cutterANSYS FluentCFDPIV |
| spellingShingle | Antony John Nyongesa Van Chien Pham Sung Hwan Yoon Woo-Seok Kwon Jun-Soo Kim Duy Nam Ngo Jae-Hyuk Choi Young-Yun Sul Won-Ju Lee Investigation of the Effect of Rope Cutter on Water Flow behind Ship Propellers Based on CFD Analysis Machines marine debris propeller entanglement rope cutter ANSYS Fluent CFD PIV |
| title | Investigation of the Effect of Rope Cutter on Water Flow behind Ship Propellers Based on CFD Analysis |
| title_full | Investigation of the Effect of Rope Cutter on Water Flow behind Ship Propellers Based on CFD Analysis |
| title_fullStr | Investigation of the Effect of Rope Cutter on Water Flow behind Ship Propellers Based on CFD Analysis |
| title_full_unstemmed | Investigation of the Effect of Rope Cutter on Water Flow behind Ship Propellers Based on CFD Analysis |
| title_short | Investigation of the Effect of Rope Cutter on Water Flow behind Ship Propellers Based on CFD Analysis |
| title_sort | investigation of the effect of rope cutter on water flow behind ship propellers based on cfd analysis |
| topic | marine debris propeller entanglement rope cutter ANSYS Fluent CFD PIV |
| url | https://www.mdpi.com/2075-1702/10/5/300 |
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