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空气动力学

Aerodynamics

课程介绍 Course Introduction

学分:4 | 先修课:流体力学 | 学期:大三上

本课程是航空航天工程专业的核心专业课,系统讲授飞行器空气动力学的基本理论与工程方法。内容包括低速翼型与机翼空气动力学、亚音速可压缩流修正、跨音速与超音速流动基础、激波理论、超音速翼型与机翼气动力特性、粘性阻力与减阻技术、飞行器气动布局设计等。课程注重理论与工程应用结合,使学生掌握飞行器气动特性分析与初步设计能力。

This core aerospace engineering course systematically teaches fundamental theories and engineering methods of aircraft aerodynamics. Topics include low-speed airfoil and wing aerodynamics, subsonic compressible flow corrections, transonic and supersonic flow fundamentals, shock wave theory, supersonic airfoil and wing characteristics, viscous drag and drag reduction techniques, and aircraft aerodynamic configuration design. The course integrates theory with engineering applications, equipping students with aircraft aerodynamic analysis and preliminary design capabilities.

大作业 Final Project

作业标题:超音速翼型气动特性数值仿真与优化

学生需对给定的超音速双弧形翼型进行气动特性数值仿真研究。使用计算流体力学软件建立二维模型,在指定马赫数与迎角范围内进行计算,获得升力系数、阻力系数、升阻比随迎角变化曲线,分析激波结构与波阻特性。对比理论公式计算结果,验证数值方法的准确性。在此基础上,对翼型厚度分布进行简单优化以提高升阻比。提交完整的仿真报告与结果分析。

Students perform numerical simulation of aerodynamic characteristics for a given supersonic biconvex airfoil. Using CFD software, build a 2D model and compute over specified Mach number and angle of attack ranges to obtain lift coefficient, drag coefficient, and lift-to-drag ratio curves. Analyze shock wave structure and wave drag characteristics. Compare with theoretical formula results to verify numerical accuracy. Based on the analysis, perform simple optimization of airfoil thickness distribution to improve lift-to-drag ratio. Submit complete simulation report and analysis.