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对经过附面层修正后的模块化扇形流管流线追踪进气道进行了数值模拟,以截短角度和收缩比对这种进气道总体性能的影响进行了研究,主要得到以下结论:附面层修正能够大幅提高进气道的流量系数和流场均匀性;经附面层修正后的扇形流管流线追踪进气道有较好的性能,流量系数能达到0.9以上,在流管内没有大的分离区;进气道流量系数和压缩量随着截短角度的增大而增大,而收缩比越大,流量系数越小,压缩量越大;发动机推力与进气道流量系数有关,发动机推力和比冲基本上均随截短角度的增大而增大,而收缩比对它们的影响并不明显.
The numerical simulation of the streamline tracking of the modular fan-shaped streamline after the modification of the cladding is carried out. The effects of the truncation angle and the shrinkage ratio on the overall performance of the inlet are studied. The main conclusions are as follows: Surface modification can significantly improve the inlet flow coefficient and flow field uniformity; the flow through the fan-shaped flow pipe tracked by the attached surface layer has better performance, the flow coefficient can reach 0.9 or above, There is no big separation zone in the pipe. The flow coefficient and compression of the air inlet increase with the increase of the truncation angle. The larger the shrinkage ratio is, the smaller the flow coefficient is and the larger the compression is. The lower the engine thrust and the inlet air flow Coefficient, engine thrust and specific impulse are basically increased with the increase of the truncation angle, and the contraction ratio of their impact is not obvious.