高超声速主流中完全气体横向喷流干扰特性研究

运用风洞试验和数值模拟手段,建立了横喷干扰效应研究的基本方法,对小钝双锥模型的完全气体横向喷流干扰问题进行了研究.首先通过试验和计算结果的对比进行方法验证,其次进行了横喷干扰的流动机理和参数影响分析.主要包括以下内容:a.无喷和喷流条件下,流场结构、模型壁面压力分布、气动力特性的试验与数值计算结果比较;b.完全气体横向喷流的气动干扰效应分析;c.攻角、喷流压比、喷流马赫数、来流边界层状态等内、外流参数变化对横向喷流干扰效应的影响分析.

Aerodynamic interaction research of perfect gas lateral jet in hypersonic external flow

Basic method on lateral jet research is developed in this paper, in which both wind tunnel experiment and CFD technique are applied, the perfect gas lateral jet effect on a blunt dual-cone configuration is discussed as an example. Main contents in the paper include three parts. First, in both no-jet and jet condition, flowfield structure, surface pressure distribution and aerodynamic characteristic of the model obtained from experiment and CFD program are compared, for the purposes of validating them each other. Second, typical mechanism and effect of perfect gas lateral jet is discussed. Finally, the qualitative and quantitative effect of parameters such as attack angle, pressure ratio of jet, Mach number of jet and state of boundary layer on lateral jet interaction are analyzed in detail.