箔片转动数学建模及仿真分析
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国家自然科学基金项目(No.31970454)资助。


Chaff movement mathematical modeling and simulation analysis
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    摘要:

    针对箔片在运动过程中存在变角速度的转动现象,对箔片的转动问题进行了研究。首先分析了气动阻尼对箔片转动的影响,建立了箔片的运动模型及转动模型,并应用CFD计算箔片的气动力系数。然后,通过高速相机计算了箔片的转动角速度并与转动模型的仿真结果进行对比,验证了模型的准确性。最后对箔片的转动特性以及箔片云的运动扩散过程进行仿真分析,得到了箔片的转动影响箔片的运动过程并决定着箔片云的运动扩散性能的结论。

    Abstract:

    In order to solve the problem of foil rotation with variable angular velocity,the problem of foil rotation is studied.Firstly,the influence of aerodynamic damping on foil rotation is analyzed,and the foil motion model and rotation model are established,and the aerodynamic coefficient of foil is calculated by CFD.Then,the rotation angular velocity of the foil is calculated by the high-speed camera,and compared with the simulation results of the rotating model; the accuracy of the model is verified.Finally,the rotational characteristics of foil and the motion diffusion process of foil cloud are simulated and analyzed.The conclusion is that the rotation of foil affects the motion process of foil and determines the motion diffusion performance of foil cloud.

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付俊博,金忠庆.箔片转动数学建模及仿真分析[J].激光与红外,2021,51(7):925~932
FU Jun-bo, JIN Zhong-qing. Chaff movement mathematical modeling and simulation analysis[J]. LASER & INFRARED,2021,51(7):925~932

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  • 在线发布日期: 2021-07-22