CAJ | 학술논문

采用内乘波进气道技术设计了一个马赫数6进出口均为矩形的高超声速进气道.设计基于一种优于传统方案的基本流场(ICFC型),使用流面追踪和激波切割方法生成进气道三维造型.为了开展对比研究,选择了典型的侧压式进气道为参照,本文进气道设计马赫数、进口形状、收缩比等都与该侧压式进气道相同.数值模拟结果表明,内乘波式进气道的各项性能参数都不低于侧压式,多数性能(如流量捕获系数、总压恢复系数、动能效率等)比侧压式都有提高.对比设计工况的性能分析也显示内乘波式进气道性能明显优于侧压式,且在所考察的各工况下都能捕获超过91%的来流.研究证明了有效利用三维压缩来进行特定设计的内乘波式进气道是一种性能优秀的定几何高超声速进气道,尤其在改善流量捕获能力方面特别突出.
채용내승파진기도기술설계료일개마혁수6진출구균위구형적고초성속진기도.설계기우일충우우전통방안적기본류장(ICFC형),사용류면추종화격파절할방법생성진기도삼유조형.위료개전대비연구,선택료전형적측압식진기도위삼조,본문진기도설계마혁수、진구형상、수축비등도여해측압식진기도상동.수치모의결과표명,내승파식진기도적각항성능삼수도불저우측압식,다수성능(여류량포획계수、총압회복계수、동능효솔등)비측압식도유제고.대비설계공황적성능분석야현시내승파식진기도성능명현우우측압식,차재소고찰적각공황하도능포획초과91%적래류.연구증명료유효이용삼유압축래진행특정설계적내승파식진기도시일충성능우수적정궤하고초성속진기도,우기재개선류량포획능력방면특별돌출.
A new internal waverider inlet with a rectangular shape of entrance and exit in front view is designed at Ma = 6.0. The design is based on a better basic flowfield ICFC than traditional one and derived with the technology of stream tracing and shock cutting. Comparison between the newly designed inlet and a typical sidewall compression inlet is given. The design Mach number and entrance shape of this new inlet are chosen according to the sidewall compression inlet. Numerical results show that most of the performance parameters of the internal waverider inlet are a bit higher than the sidewall inlet, such as the flow capture coefficient, total pressure recovery and the kinetic efficiency. The performances of these two inlets at off-design points are compared. The internal waverider inlet can capture more than 91% of incoming flow under all simulated conditions. Results show that internal waverider inlet using 3-D compression and high flow capture coefficient is a kind of fixed-geometry inlet with better performance.