Design, Performance Evaluation and Field Test of a Water Jet Tool for ROV Trencher
ROV trencher is a kind of ROV which trenches the sea floor using a specifically designed tool and buries the subsea cables and pipelines. According to the soil conditions, this trenching method can have two different types, one is mechanical cutting and the other one is water jetting. In this paper,...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/9/3/296 |
| _version_ | 1827601785494175744 |
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| author | Ji-Hong Li Mun-Jik Lee Hyungjoo Kang Min-Gyu Kim Gun Rae Cho |
| author_facet | Ji-Hong Li Mun-Jik Lee Hyungjoo Kang Min-Gyu Kim Gun Rae Cho |
| author_sort | Ji-Hong Li |
| collection | DOAJ |
| description | ROV trencher is a kind of ROV which trenches the sea floor using a specifically designed tool and buries the subsea cables and pipelines. According to the soil conditions, this trenching method can have two different types, one is mechanical cutting and the other one is water jetting. In this paper, we present a water jet tool design method for a 2500 m depth-rated ROV trencher. A series of CFD simulations and laboratory tests with one nozzle, and a ground test using 1:6 scale jetting arm model were carried out to derive and demonstrate the jetting tool design parameters. In October 2018, the constructed ROV trencher was put into the sea trial in the East Sea of Korea to evaluate its final performances. In addition, in December 2019, the trencher was applied in a construction site to bury subsea water pipelines near the Yogji Island in the Korea. Through these two field tests and operation, the trencher was demonstrated for both its operational capability and trenching performance. The main contribution of this paper is that it presents the entire design procedures of water jet tools, including CFD simulations, laboratory tests, field test with 1:6 scaled jetting tool, and the final prototype tool design. These consecutive procedures are carried out in order for us to set up sort of relationship between jetting angle, trench depth, trench speed, and jetting power, from which we can predict and evaluate the trenching performance of the prototype jetting tool. |
| first_indexed | 2024-03-09T05:03:31Z |
| format | Article |
| id | doaj.art-c797cddd9e4441b0b2222c4048aca4af |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-09T05:03:31Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-c797cddd9e4441b0b2222c4048aca4af2023-12-03T12:57:25ZengMDPI AGJournal of Marine Science and Engineering2077-13122021-03-019329610.3390/jmse9030296Design, Performance Evaluation and Field Test of a Water Jet Tool for ROV TrencherJi-Hong Li0Mun-Jik Lee1Hyungjoo Kang2Min-Gyu Kim3Gun Rae Cho4Intelligent Robotics R&D Division, Korea Institute of Robotics and Technology Convergence, Jigok-Ro 39, Nam-Gu, Pohang 37666, KoreaIntelligent Robotics R&D Division, Korea Institute of Robotics and Technology Convergence, Jigok-Ro 39, Nam-Gu, Pohang 37666, KoreaIntelligent Robotics R&D Division, Korea Institute of Robotics and Technology Convergence, Jigok-Ro 39, Nam-Gu, Pohang 37666, KoreaIntelligent Robotics R&D Division, Korea Institute of Robotics and Technology Convergence, Jigok-Ro 39, Nam-Gu, Pohang 37666, KoreaIntelligent Robotics R&D Division, Korea Institute of Robotics and Technology Convergence, Jigok-Ro 39, Nam-Gu, Pohang 37666, KoreaROV trencher is a kind of ROV which trenches the sea floor using a specifically designed tool and buries the subsea cables and pipelines. According to the soil conditions, this trenching method can have two different types, one is mechanical cutting and the other one is water jetting. In this paper, we present a water jet tool design method for a 2500 m depth-rated ROV trencher. A series of CFD simulations and laboratory tests with one nozzle, and a ground test using 1:6 scale jetting arm model were carried out to derive and demonstrate the jetting tool design parameters. In October 2018, the constructed ROV trencher was put into the sea trial in the East Sea of Korea to evaluate its final performances. In addition, in December 2019, the trencher was applied in a construction site to bury subsea water pipelines near the Yogji Island in the Korea. Through these two field tests and operation, the trencher was demonstrated for both its operational capability and trenching performance. The main contribution of this paper is that it presents the entire design procedures of water jet tools, including CFD simulations, laboratory tests, field test with 1:6 scaled jetting tool, and the final prototype tool design. These consecutive procedures are carried out in order for us to set up sort of relationship between jetting angle, trench depth, trench speed, and jetting power, from which we can predict and evaluate the trenching performance of the prototype jetting tool.https://www.mdpi.com/2077-1312/9/3/296ROV trenchersubsea cable and pipeline buryingwater jetting armFroude numbertrench depthtrench speed |
| spellingShingle | Ji-Hong Li Mun-Jik Lee Hyungjoo Kang Min-Gyu Kim Gun Rae Cho Design, Performance Evaluation and Field Test of a Water Jet Tool for ROV Trencher Journal of Marine Science and Engineering ROV trencher subsea cable and pipeline burying water jetting arm Froude number trench depth trench speed |
| title | Design, Performance Evaluation and Field Test of a Water Jet Tool for ROV Trencher |
| title_full | Design, Performance Evaluation and Field Test of a Water Jet Tool for ROV Trencher |
| title_fullStr | Design, Performance Evaluation and Field Test of a Water Jet Tool for ROV Trencher |
| title_full_unstemmed | Design, Performance Evaluation and Field Test of a Water Jet Tool for ROV Trencher |
| title_short | Design, Performance Evaluation and Field Test of a Water Jet Tool for ROV Trencher |
| title_sort | design performance evaluation and field test of a water jet tool for rov trencher |
| topic | ROV trencher subsea cable and pipeline burying water jetting arm Froude number trench depth trench speed |
| url | https://www.mdpi.com/2077-1312/9/3/296 |
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