Numerical Simulation of the Horizontal Water-Entry Process of High-Speed Vehicles
Based on the RNG k-ε turbulence model and VOF multiphase flow model, a numerical model of horizontal water-entry of the vehicle was established, and the numerical method was verified by experimental results. The cavitation characteristics, fluid resistance, and motion of the vehicle under different...
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MDPI AG
2024-11-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/12/11/2062 |
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| author | Jin-Long Ju Na-Na Yang Yi-Fei Zhang Lei Yu Zhe Zhang Liang-Chao Li Guo-Lu Ma Wen-Hua Wu |
| author_facet | Jin-Long Ju Na-Na Yang Yi-Fei Zhang Lei Yu Zhe Zhang Liang-Chao Li Guo-Lu Ma Wen-Hua Wu |
| author_sort | Jin-Long Ju |
| collection | DOAJ |
| description | Based on the RNG k-ε turbulence model and VOF multiphase flow model, a numerical model of horizontal water-entry of the vehicle was established, and the numerical method was verified by experimental results. The cavitation characteristics, fluid resistance, and motion of the vehicle under different conditions were studied during the vehicle’s water-entry process. The results show that the cavitation process can be divided into the cavity development stage, saturation stage, and collapse stage. With the increase in initial velocity and mass of the vehicle, more water vapor will be generated during the water-entry process. The initial velocity of the vehicle had a limited effect on the resistance coefficient. The resistance coefficient in the stable stage remained almost unchanged for vehicles with different masses. Nevertheless, the time interval of the stable stage was shortened, and the resistance coefficient was greater in the gradually increasing stage for the vehicle with a smaller mass. For vehicles with higher initial velocity or smaller mass, the instantaneous velocity decreased faster after it entered the water. The vehicle with a streamlined design was able to reduce the generation of water vapor and decrease fluid resistance and its coefficient, and the vehicle can run farther during the water-entry process. |
| format | Article |
| id | doaj-art-780ace0f6726480ab3d66ca9d36cf53f |
| institution | OA Journals |
| issn | 2077-1312 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj-art-780ace0f6726480ab3d66ca9d36cf53f2025-08-20T02:05:03ZengMDPI AGJournal of Marine Science and Engineering2077-13122024-11-011211206210.3390/jmse12112062Numerical Simulation of the Horizontal Water-Entry Process of High-Speed VehiclesJin-Long Ju0Na-Na Yang1Yi-Fei Zhang2Lei Yu3Zhe Zhang4Liang-Chao Li5Guo-Lu Ma6Wen-Hua Wu7College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaChina Aerodynamics Research and Development Center, Mianyang 621000, ChinaChina Aerodynamics Research and Development Center, Mianyang 621000, ChinaCollege of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaKey Laboratory of Testing Technology for Manufacturing Process of Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, ChinaKey Laboratory of Testing Technology for Manufacturing Process of Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, ChinaChina Aerodynamics Research and Development Center, Mianyang 621000, ChinaBased on the RNG k-ε turbulence model and VOF multiphase flow model, a numerical model of horizontal water-entry of the vehicle was established, and the numerical method was verified by experimental results. The cavitation characteristics, fluid resistance, and motion of the vehicle under different conditions were studied during the vehicle’s water-entry process. The results show that the cavitation process can be divided into the cavity development stage, saturation stage, and collapse stage. With the increase in initial velocity and mass of the vehicle, more water vapor will be generated during the water-entry process. The initial velocity of the vehicle had a limited effect on the resistance coefficient. The resistance coefficient in the stable stage remained almost unchanged for vehicles with different masses. Nevertheless, the time interval of the stable stage was shortened, and the resistance coefficient was greater in the gradually increasing stage for the vehicle with a smaller mass. For vehicles with higher initial velocity or smaller mass, the instantaneous velocity decreased faster after it entered the water. The vehicle with a streamlined design was able to reduce the generation of water vapor and decrease fluid resistance and its coefficient, and the vehicle can run farther during the water-entry process.https://www.mdpi.com/2077-1312/12/11/2062high-speed horizontal entry into wateracross mediumfluid cavitation characteristicsvehicle motionnumerical simulation |
| spellingShingle | Jin-Long Ju Na-Na Yang Yi-Fei Zhang Lei Yu Zhe Zhang Liang-Chao Li Guo-Lu Ma Wen-Hua Wu Numerical Simulation of the Horizontal Water-Entry Process of High-Speed Vehicles Journal of Marine Science and Engineering high-speed horizontal entry into water across medium fluid cavitation characteristics vehicle motion numerical simulation |
| title | Numerical Simulation of the Horizontal Water-Entry Process of High-Speed Vehicles |
| title_full | Numerical Simulation of the Horizontal Water-Entry Process of High-Speed Vehicles |
| title_fullStr | Numerical Simulation of the Horizontal Water-Entry Process of High-Speed Vehicles |
| title_full_unstemmed | Numerical Simulation of the Horizontal Water-Entry Process of High-Speed Vehicles |
| title_short | Numerical Simulation of the Horizontal Water-Entry Process of High-Speed Vehicles |
| title_sort | numerical simulation of the horizontal water entry process of high speed vehicles |
| topic | high-speed horizontal entry into water across medium fluid cavitation characteristics vehicle motion numerical simulation |
| url | https://www.mdpi.com/2077-1312/12/11/2062 |
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