FLUENT 单翼末敏弹气动特性分析及仿真

Title   The aerodynamic characteristics analysis   of single-wing terminal sensing ammunition
Abstract
Compared with terminal sensing ammunition (TSA) with parachute, the single-wing TSA without parachute has superiorities on scanning rate, falling velocity and scanning span. So this thesis has used FLUENT to do the simulation of single-wing TSA. Firstly, thesis establishes the simulation model according to given measurement. The technology of structured mesh is more mature and higher precision than unstructured mesh, but unstructured mesh is more suitable for asymmetrical structure. So this thesis uses the technology of unstructured mesh. Due to the special structure of single-wing TSA, the paper take measures to make the span on sideline of cylinder range from small to large when the model is pided. 源￥自%六^^维*论-文+网=www.lwfree.cn
Finally, we can deduce that this model can provide enough drag and lift force. The model can improve the stability and produce a larger resistance when we take the smaller values of installation angle, approximately 15 degree.
Key word: single-wing TSA, aerodynamic characteristics, FLUENT，unstructured mesh

1  绪论    1
1.1  研究背景    1
1.2  研究的目的和意义    1
1.3  国内外研究现状    2
1.4  本文主要工作    5
2  单翼末敏弹气动特性    6
3  单翼末敏弹模型建立及网格划分    8
3.1 单翼末敏弹气动外形选择    8
3.2  网格划分    9
4  单翼末敏弹仿真计算    17
4.1  计算流体力学基本理论    17
4.2  利用FLUENT求解器求解    20
5  计算结果及分析    26
5.1  收敛曲线    26
5.2  压力云图    27
5.3  速度流线图    29
5.4  不同反安装角时弹体上的力和力矩    30

1  绪论
1.1  研究背景

------分隔线----------------------------