Numerical study of the influence of different water depths on the muzzle flow characteristics of machine gun
The mathematical and physical models of the underwater submerged gun are established to study the flow field distribution characteristics of the gun muzzle at different water depths. The Schnerr–Sauer cavitation model and the realizable k–ω transport turbulence model based on the Reynolds-averaged N...
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| Published in | AIP advances Vol. 12; no. 12; pp. 125006 - 125006-11 |
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| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
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Melville
American Institute of Physics
01.12.2022
AIP Publishing LLC |
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| Abstract | The mathematical and physical models of the underwater submerged gun are established to study the flow field distribution characteristics of the gun muzzle at different water depths. The Schnerr–Sauer cavitation model and the realizable k–ω transport turbulence model based on the Reynolds-averaged Navier–Stokes method are employed. The muzzle flow field for the 12.7 mm gun that is submerged launched underwater is numerically simulated by combining user-defined functions and overlapping mesh technology. The flow characteristics of the density, velocity, and pressure fields at the gun muzzle at different water depths are analyzed in detail. The results show that the muzzle flow morphology depends mainly on the pressure at different water depths. The muzzle flow field distribution in deep water is more flat due to the high value of water pressure, which limits the expansion of the muzzle gas, and the range of the velocity field of the muzzle flow field at 100 m is one time smaller than that at 1 m. |
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| AbstractList | The mathematical and physical models of the underwater submerged gun are established to study the flow field distribution characteristics of the gun muzzle at different water depths. The Schnerr–Sauer cavitation model and the realizable k–ω transport turbulence model based on the Reynolds-averaged Navier–Stokes method are employed. The muzzle flow field for the 12.7 mm gun that is submerged launched underwater is numerically simulated by combining user-defined functions and overlapping mesh technology. The flow characteristics of the density, velocity, and pressure fields at the gun muzzle at different water depths are analyzed in detail. The results show that the muzzle flow morphology depends mainly on the pressure at different water depths. The muzzle flow field distribution in deep water is more flat due to the high value of water pressure, which limits the expansion of the muzzle gas, and the range of the velocity field of the muzzle flow field at 100 m is one time smaller than that at 1 m. The mathematical and physical models of the underwater submerged gun are established to study the flow field distribution characteristics of the gun muzzle at different water depths. The Schnerr–Sauer cavitation model and the realizable k–ω transport turbulence model based on the Reynolds-averaged Navier–Stokes method are employed. The muzzle flow field for the 12.7 mm gun that is submerged launched underwater is numerically simulated by combining user-defined functions and overlapping mesh technology. The flow characteristics of the density, velocity, and pressure fields at the gun muzzle at different water depths are analyzed in detail. The results show that the muzzle flow morphology depends mainly on the pressure at different water depths. The muzzle flow field distribution in deep water is more flat due to the high value of water pressure, which limits the expansion of the muzzle gas, and the range of the velocity field of the muzzle flow field at 100 m is one time smaller than that at 1 m. |
| Author | Qu, Pu Li, Qiang Sun, Zhiqun Han, Yujing |
| Author_xml | – sequence: 1 givenname: Zhiqun surname: Sun fullname: Sun, Zhiqun organization: School of Mechatronics Engineering, North University of China – sequence: 2 givenname: Qiang surname: Li fullname: Li, Qiang organization: School of Mechatronics Engineering, North University of China – sequence: 3 givenname: Yujing surname: Han fullname: Han, Yujing organization: Jiangnan Industry Group Co., Ltd – sequence: 4 givenname: Pu surname: Qu fullname: Qu, Pu organization: School of Mechatronics Engineering, North University of China |
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| Cites_doi | 10.1080/17455030.2022.2128229 10.1016/j.oceaneng.2018.03.032 10.1016/j.enconman.2014.03.039 10.1007/s10483-008-0306-y 10.1016/j.dt.2021.09.015 10.1142/s0217979222500795 10.1108/hff-12-2018-0746 10.1007/s12648-019-01678-2 10.1063/1.5017173 10.1016/j.powtec.2022.117509 10.1007/s00193-008-0155-9 10.1007/s12206-022-0723-4 10.3969/j.issn.1000-1093.2020.03.007 10.1063/5.0011308 10.1016/j.csite.2022.102427 10.1016/j.oceaneng.2015.09.025 10.1016/j.ijheatmasstransfer.2019.01.042 10.3390/jmse8040265 10.1016/j.icheatmasstransfer.2022.106374 10.1016/j.apor.2020.102073 10.1063/5.0078853 10.1007/s10409-015-0421-x 10.1016/j.apor.2016.11.003 10.3969/j.issn.1000-1093.2019.02.006 10.3969/j.issn.1000-1093.2021.08.006 10.1088/1742-6596/1721/1/012021 10.1016/j.expthermflusci.2013.10.009 |
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| SubjectTerms | Cavitation Deep water Finite element method Flow characteristics Guns Reynolds averaged Navier-Stokes method Turbulence models Underwater Velocity distribution Water depth Water pressure |
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| Title | Numerical study of the influence of different water depths on the muzzle flow characteristics of machine gun |
| URI | http://dx.doi.org/10.1063/5.0128214 https://www.proquest.com/docview/2746636397 https://doaj.org/article/b9f685be92064da88bb2b43210ece563 |
| Volume | 12 |
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