用于实时弹道仿真的低空风切变复合模型

doi:10.3969/j.issn.1001-506X.2019.11.24

系统工程与电子技术 ›› 2019, Vol. 41 ›› Issue (11): 2597-2604.doi: 10.3969/j.issn.1001-506X.2019.11.24

用于实时弹道仿真的低空风切变复合模型

陈健伟, 王良明, 傅健

南京理工大学能源与动力工程学院, 江苏南京 210094

出版日期:2019-10-30 发布日期:2019-11-05

Comprehensive model of low level wind shear for real-time ballistic simulation

CHEN Jianwei, WANG Liangming, FU Jian

School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

Online:2019-10-30 Published:2019-11-05

摘要/Abstract

摘要： 风切变是一种形成概率高、危害范围广的气象现象,对弹箭飞行具有较大影响。针对几种典型低空风切变的流动特点,基于位势流动理论,分别建立了微下击暴流涡环模型、过山气流圆柱绕流模型和低空急流平面壁面射流模型。在此基础上,以发射坐标系为基准,提出一种考虑天气和地形的低空风切变复合模型。以某122 mm火箭弹为例,进行算例仿真。仿真结果表明:所建立的低空风切变复合模型具有良好的三维特性,能够合理描述典型风切变现象的气体流动特点。应用于实时弹道仿真中,可有效反映出复杂环境下不同种类低空风切变对弹箭飞行的影响规律。

关键词: 弹道仿真, 低空风切变, 风场建模, 复合模型

Abstract: Wind shear is a meteorological phenomenon with high probability of formation and wide range of hazards. It has a great impact on the flight of rockets and projectiles. According to the theory of the potential flow, the micro-downburst vortex model, the airflow over mountain circular cylinder model and the plane wall low-level jet model are established. Based on this, a comprehensive model of low level wind shear considering weather and topography in the ground coordinate is designed. Take a 122 mm rocket as an example for simulation and analysis. The simulation results show that the comprehensive model has good three-dimensional characteristics, and can provide reasonable description of flow performance of typical wind shear. In the real-time ballistic simulation, the model can give effective reflections of how different kinds of wind shear affect the flight process of rockets and projectiles.

Key words: ballistic simulation, low level wind shear, wind field model, comprehensive model

陈健伟, 王良明, 傅健. 用于实时弹道仿真的低空风切变复合模型[J]. 系统工程与电子技术, 2019, 41(11): 2597-2604.

CHEN Jianwei, WANG Liangming, FU Jian. Comprehensive model of low level wind shear for real-time ballistic simulation[J]. Systems Engineering and Electronics, 2019, 41(11): 2597-2604.

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用于实时弹道仿真的低空风切变复合模型

Comprehensive model of low level wind shear for real-time ballistic simulation

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