FLUENT多翼飞行器空气动力学特性分析
摘要航空要解决的首要问题是如何获得飞行器所需要的举力、减小飞行器的阻力和提高它的飞行速度，这一理论现被广泛使用于飞机设计工业中。这就要从理论和实践上研究飞多翼飞行器在飞行过程中的空气动力学特性。65583
本文主要使用的软件为FLUENT软件，它是由美国FLUENT公司推出的CFD软件，是目前国内使用最广泛的CFD软件之一。
本文以带有十字形尾翼的导弹作为研究对象，利用流体力学计算软件FLUENT，对其进行建模，并划分网格，设定边界条件，对带翼导弹在空气中高速飞行时进行空气动力学特性分析，计算其在不同工况（来流马赫数、攻角）下气动力参数，并进行比较，得出相应规律。同时生成各个工况下的弹体压力分布图，弹体周围速度分布图等。并且通过分析这些图像，来找出压力、速度分布的特点。
毕业论文关键词 多翼飞行器 FLUENT 网格 空气动力学特性 不同工况
毕业设计说明书（论文）外文摘要
Title Multi-wing flight vehicle aerodynamic characteristics analysis based on FLUENT
Abstract
the vehicle and improve its speed, which theory has been widely used in aircraft design industry. This requires theoretical and practical research on multi-wing flight vehicle aerodynamic characteristics in the process of the flight.
In this paper, I mianly use the FLUENT software, launched to be a CFD software by the FLUENT Company, which is one of the most widely used CFD software nowadays in China.
Based on missile with a cruciform tail fins as the research object, this article uses fluid mechanics computation software FLUENT, builds its model, pides the mesh, and sets the boundary conditions. I analyze aerodynamic characteristics of the missile with wings in the high-speed flight in the air and calculate its aerodynamic force parameters in different conditions (flow Mach number, Angle of attack), and compare with each other, draw the corresponding laws. At the same time I figure out the pressure distribution and velocity profile on the projectile under various working conditions. Through the analysis of these images, it can be found out that the characteristics of pressure and velocity distribution.
Keywords Multi-wing flight vehicle FLUENT Mesh Aerodynamic characteristics In different conditions
目 次
1 绪论 1
1.1 研究背景及意义 1
1.2 国内外空气动力学的各种理论和成果 1
1.3 本文研究内容 3
2 计算流体力学方法综述 5
2.1 关于CFD 5
2.2 本文所用CFD软件（FLUENT）简介 5
2.3 CFD的求解步骤 6
2.4 CFD的求解过程 7
3 本课题研究所用的流体运动的控制方程和湍流模型 9
3.1 质量守恒方程 9
3.2 动量守恒方程 9
3.3 本文采用的湍流模型： 两方程模型 10
3.4 本文所采用的数学模型 10
4 多翼飞行器基于FLUENT的气动力参数计算