FLUENT弧形翼弹超声速流动数值模拟
毕业论文关键词 弧形翼 翼-身组合体 超音速 空气动力 数值模拟
Title Numerical Simulation of Projectile With WAF At Supersonic Flow
Abstract Since the mid-twentieth century，the rapid progress in computer technology and the emergence of supercomputers promote the rapid development of computational fluid dynamics,we can take advantage of CFD simulation and analysis to solve almost the fluid flow, heat exchange, molecular transport phenomena. At the same time, the development of CFD has a tremendous impact on aerodynamic research, although the wind tunnel test gives us the results of high accuracy, because of its limitations of the ability to simulate and high cost, CFD has become one of the main tools of the aerodynamics research. Curved wing is an airfoil designed for the launch tube,with unique aerodynamic characteristics,widely applied in missiles weapon design. With the help of commercial CFD software FLUENT, numerical simulation of flow over wrap-around fin-body combination was done at supersonic flow. Change rules of wrap-around fin’s aerodynamic characteristics as a function of Mach Number and angle of attack was investigated. Mechnism of producing Self-induced rotational torque of wrap-around fin at zero angle of attack was analyzed selectively，it provides theoretical and technical support for wrap-around fins’basic and engineering application. Keywords wrap-around fin wing-body combination supersonic aerodynamic numerical simulation
目 次
1 绪论 . 1
1.1 课题研究目的及意义 . 1
1.2 弧形翼的空气动力学特性 . 1
1.3 国内外研究状况 . 1
1.3.1 国外弧形翼的研究情况 . 1
1.3.2 国内弧形翼的研究情况 . 2
1.3.3 弧形翼的数值模拟研究情况 . 2
1.4 本文主要内容 . 3
2 计算流体力学简介及CFD商业软件FLUENT . 4
2.1 计算流体力学的基本情况 . 4
2.2 FLUENT软件简介 . 5
2.3 CFD的基本模型 6
2.3.1 基本控制方程 . 6
2.3.2 雷诺湍流模型 . 7
2.4 FLUENT在空气动力学研究方面的应用验证 . 8
3 弧形翼—身组合体超声速空气动力学特性 11
3.1 弧形翼模型及计算 11
3.1.1 几何模型 11
3.1.2 网格生成技术 12
3.1.3 计算模型 13
3.1.4 仿真设置 14