The efficient fuel injection system is a vital part of scramjet for a high-speed flight. In this scientific study, the effects of the multi fuel jets on the inclined surface are investigated at the supersonic air stream with Mach=4. This study employed the CFD technique for the simulation of the interaction of multi hydrogen-jets with free stream airflow. The impressions of inclined surface angle and hydrogen jet total pressure on the fuel mixing zone are disclosed. The Mach contour on the jet plane is presented to describe the chief terms on the distribution and penetration of hydrogen jet inside the combustion chamber. To perform a 3D computational study, the RANS equation with the SST turbulence model is used. Our study shows that the mixing performance of multi jets enhances in high jet pressure when the angle of the tending exterior is raised. Our findings also demonstrate that power and slant of the separation shock is highly effective on the size of the mixing zone.

中文翻译：

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超音速流斜面上氢气多射流喷射

高效的燃油喷射系统是超燃冲压发动机高速飞行的重要组成部分。在这项科学研究中，研究了在马赫数超音速气流下多燃料射流对倾斜表面的影响。=4. 本研究采用 CFD 技术模拟多个氢射流与自由流气流的相互作用。公开了燃料混合区的倾斜表面角和氢气射流总压力的影响。提出了射流平面上的马赫等值线来描述氢气射流在燃烧室内的分布和渗透的主要术语。为了进行 3D 计算研究，使用了带有 SST 湍流模型的 RANS 方程。我们的研究表明，当外倾角增大时，多射流的混合性能在高射流压力下增强。我们的研究结果还表明，分离冲击的功率和倾斜度对混合区的大小非常有效。