摘要：数值模拟法作为近年来新兴的研究方法，具有高效、高精度、低成本和高符合度的特点，对于新型武器研发具有十分重要的意义。尾翼稳定脱壳穿甲弹（APFSDS）在飞行过程中的受力及气动环境较为复杂，涉及到诸多气动系数。为获得某尾翼稳定脱壳穿甲弹的气动数据，本课题以尾翼弹气动方程为理论依据，推导了算例的气动系数。数值模拟部分利用Pro/E软件建模，ICEM软件进行网格划分，并用Fluent软件对模型多种工况下的数值进行模拟，运算得出算例气动系数。最后对理论计算和数值模拟结果做了比较，并分析误差产生原因。

关键词  APFSDS  气动系数  网格划分  数值模拟

毕业设计说明书外文摘要

Title      Aerodynamic Numerical Simulation of Armor Piercing  Fin Stabilized Discarding Sabot                     

Abstract：As a emerging method in recent years, numerical simulation method has the characteristics of high efficiency, high precision, low cost and high coincidence degree, which is of great significance to the research and development of new weapons. APFSDS during the flight force and aerodynamic environment is complex, involving many aerodynamic coefficients. In order to obtain the aerodynamic data for an type of APFSDS, subject to the fin-stabilized projectile aerodynamic equation as the theoretical basis, and derive the aerodynamic coefficients of the numerical example. In the part of Numerical simulation, by using Pro/E software modeling, ICEM software for grid pision and Fluent software to simulate the model of a variety of conditions, the calculation of the aerodynamic coefficient. Finally, obtained aerodynamic coefficients of the numerical example. At last, the theoretical calculation and numerical simulation results were compared, and analyzed the causes of errors.

Keywords  APFSDS   aerodynamic coefficients   grid pision   numerical simulation

目   次

1 绪论 1

1.1 研究背景 1

1.2 研究现状 2

1.2.1 脱壳穿甲弹的发展 2

1.2.2 数值模拟研究现状 2

1.3 本课题的研究内容 4

2 弹丸模型建立及网格划分 5

2.1 模型构建 5

2.1.1 Pro/Engineer软件介绍 5

2.1.2 建模 5

2.2 网格划分 7

2.2.1 ICEM软件介绍 7

2.2.2 网格处理 8

3 数值仿真 11

3.1 弹箭气动力的工程算法 12

3.1.1 弹体空气动力系数计算 12

3.1.2弹翼空气动力系数计算 17

3.1.3 尾翼弹空气动力系数计算 20

3.2 数值模拟Fluent软件介绍 22

3.3 穿甲弹数值仿真 23

3.4 模拟计算结果 25

3.5工程计算结果 29

3.6数值结果分析 29

结  论 31

致  谢