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Numerical study on flowfield characteristic in S-duct inlet

机译:S型管道入口流场特性的数值研究

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The objective of this research was to simulate flowfield characteristic for subsonic, transonic and supersonic in S-duct inlet. Effect of angle of attack was taken into account. Numerical results, including surface static pressure, total pressure recovery and distortion descriptor, were compared with flight test data. And good agreement is apparent. Mechanism of secondary flow was also analyzed. Two pairs of vortices were obviously observed at exit. The performance of the inlet is better at small angle of attack and transonic or supersonic conditions.
机译:这项研究的目的是模拟S管入口亚音速,跨音速和超音速的流场特性。考虑了迎角的影响。将包括表面静压,总压恢复和变形描述符在内的数值结果与飞行测试数据进行了比较。良好的协议是显而易见的。还分析了二次流动的机理。在出口处明显观察到两对涡旋。在小迎角和跨音速或超音速条件下,进气口的性能会更好。

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