谭骏怡, 胡俊华, 陈国明, 杨健, 葛阳. 水空跨介质航行器斜出水过程数值仿真[J]. 中国舰船研究, 2019, 14(6): 104-121. DOI: 10.19693/j.issn.1673-3185.01519
引用本文: 谭骏怡, 胡俊华, 陈国明, 杨健, 葛阳. 水空跨介质航行器斜出水过程数值仿真[J]. 中国舰船研究, 2019, 14(6): 104-121. DOI: 10.19693/j.issn.1673-3185.01519
Tan Junyi, Hu Junhua, Chen Guoming, Yang Jian, Ge Yang. Numerical simulation of oblique water-exit process of trans-media aerial underwater vehicle[J]. Chinese Journal of Ship Research, 2019, 14(6): 104-121. DOI: 10.19693/j.issn.1673-3185.01519
Citation: Tan Junyi, Hu Junhua, Chen Guoming, Yang Jian, Ge Yang. Numerical simulation of oblique water-exit process of trans-media aerial underwater vehicle[J]. Chinese Journal of Ship Research, 2019, 14(6): 104-121. DOI: 10.19693/j.issn.1673-3185.01519

水空跨介质航行器斜出水过程数值仿真

Numerical simulation of oblique water-exit process of trans-media aerial underwater vehicle

  • 摘要:
      目的  水空跨介质航行器(TMAUV)的斜出水过程是一个强非线性、非定常、流场变化剧烈的过程。基于一种可变体的TMAUV的水下构型,利用CFD流体仿真软件,对该构型在典型工况下的出水过程进行数值仿真。
      方法  分析航行器在此过程中不同阶段的流场变化特性及其载荷的分布,比较航行器以不同的俯仰角和攻角出水时,在2个典型位置的流体速度场分布和航行器所受流体作用力的特性。
      结果  结果表明,航行器倾斜跨越水空界面时两侧的流场和载荷会出现不对称的剧烈变化,俯仰角越大,在水下部分流场受动范围越小,跨越出水部分受影响越大;与零攻角出水相比,航行器带攻角倾斜出水会导致表面所受流体作用力出现高频率、大幅度的反向震荡,影响出水的稳定性。
      结论  研究结果可为研究潜射导弹出水、船舶航行、潜艇跨介质等问题提供研究思路和理论参考。

     

    Abstract:
      Objectives  The oblique water-exit process of a Trans-Media Aerial Underwater Vehicle (TMAUV)is highly non-linear, unsteady and drastic in flow field. Based on the underwater configuration of a TMAUV, the two-dimensional numerical simulation of the process is carried out by using CFD fluid simulation software under the typical conditions.
      Methods  The flow field variation characteristics and the load distribution of the vehicle at different stages of the water-exit process were analyzed, and the distribution of flow velocity field at two typical positions and characteristics of hydrodynamic forces acting on the vehicle in case of water-exit at different pitch and attack angles was compared.
      Results  The simulation results show that the flow field and load on both sides of the vehicle will change dramatically when it crosses the water-air interface obliquely. The larger the pitch angle is, the smaller the range of the part of flow field under water will be affected, and the larger the impact on the part of flow field crossing and above the water will be. Compared with the case of water-exit at zero angle of attack, the oblique water-exit of the vehicle at an angle of attack will lead to high frequency and large-scale reverse oscillation of the hydrodynamic force acting on the surface and affect the stability of the vehicle when it exits water.
      Conclusions  The results in this paper can provide ideas and theoretical reference for the study of water-exit of submarine-launched missiles, navigation of ships, cross-medium of submarines and other topics.

     

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