摘要
In order to study the influence of the ventilating cavitation flow at the shoulder of a submerged-launched vehicle on the surface hydrodynamic characteristics, a three-dimensional potential model for the shoulder ventilation of the vehicle was established based on the homogeneous multiphase flow theory, standard RNG k-ε model, Singhal cavitation model and overlapping grid technology, and the numerical simulation of the unsteady evolution process of the ventilated cavitation flow was carried out, and the cavitation flow morphology evolution, surface pressure distribution and resistance characteristics under different ventilation rates were compared. The results showed that the thickness and length of the ventilated cavitation flow in the early stage of fusion continue increased with the increasing of ventilation volume, and its thickness and length changed slightly in the later stage; when the exhaust position did not change and the ventilation volume was within a certain range, the differential pressure resistance coefficient and viscous resistance coefficient decreased with the increasing of internal pressure of the ventilated cavity.
投稿的翻译标题 | Numerical investigation on fluid dynamic characteristics around shoulder ventilation of submarine-launched vehicle |
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源语言 | 繁体中文 |
页(从-至) | 463-470 |
页数 | 8 |
期刊 | Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University |
卷 | 39 |
期 | 3 |
DOI | |
出版状态 | 已出版 - 6月 2021 |
关键词
- Cavitation flow
- Hydrodynamics
- Submarine-launched vehicle
- Ventilation mass flow