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利用CFD数值模拟技术,对涵道比为9的无阻流门式反推力装置实验模型的流场进行数值模拟.分析了不同落压比下,反推力效率、叶栅流量比和注气流量比随注气缝参数变化的规律.根据计算结果,详细分析了反推力装置流场特征,指出二次流注气位置、注气角度和注气缝宽度对反推力装置性能有较大的影响.根据分析结果,确定寻找最佳注气缝参数的一般性规律.
The CFD numerical simulation technique is used to simulate the flow field in the experimental model of the unreex valve type thrust reverser with a bypass ratio of 9. The effects of thrust ratio, cascade flow ratio and gas injection flow ratio According to the calculation results, the flow field characteristics of the thrust reverser are analyzed in detail, and it is pointed out that the location of secondary gas injection, the angle of gas injection and the width of gas injection gap have a great influence on the performance of the thrust reverser. According to the results of the analysis, the general law of finding the best parameters of gas injection joints is determined.