Based on the aerodynamic matching configuration between a core driven fan stage (CDFS) and high pressure compressor (HPC), matching state point correlation equations have been established in this paper. The radial nonuniformity of the CDFS outlet flow and the aerodynamic loss caused by complex flow structure between these two components are taken full account in the equations, and a high-accuracy prediction program for matching performance has been developed. Based on the experimental performance data of two components, matching performance prediction at given bypass ratio is made and compared with experimental results. The results show that: 1) The outlet temperature of CDFS varies with its state points change, which makes the relative corrected rotation speed of HPC in matching environment change, and the characteristic line of HPC is not based on the same relative corrected rotation speed. 2) The difference exists between the matching performance prediction results and experimental results. One reason is that CDFS performance varies in the component environment and the matching environment due to the different back pressure regulation modes; another reason is that this prediction method doesn’t consider the effect of the CDFS’s outlet flow nonuniformity on the HPC’s performance, but the maximum relative deviation of the flow rate is only 0.74 %.

中文翻译：

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核心驱动风扇级与高压压缩机之间的匹配性能预测

基于核心驱动风机级（CDFS）和高压压缩机（HPC）之间的空气动力学匹配配置，建立了匹配状态点相关方程。在方程中充分考虑了CDFS出口流的径向不均匀性和由这两个组件之间复杂的流结构引起的空气动力学损失，并开发了一种用于匹配性能的高精度预测程序。基于两个组件的实验性能数据，对给定的旁路比下的匹配性能进行了预测，并将其与实验结果进行了比较。结果表明：1）CDFS的出口温度随其状态点的变化而变化，这使得HPC在匹配环境下的相对校正转速发生变化，HPC的特性线不是基于相同的相对校正转速。2）匹配性能预测结果与实验结果之间存在差异。原因之一是，由于背压调节模式不同，CDFS性能在组件环境和匹配环境中会有所不同。另一个原因是，这种预测方法没有考虑CDFS出口流量不均匀性对HPC性能的影响，但是流量的最大相对偏差仅为0.74％。原因之一是，由于背压调节模式不同，CDFS性能在组件环境和匹配环境中会有所不同。另一个原因是，这种预测方法没有考虑CDFS出口流量不均匀性对HPC性能的影响，但是流量的最大相对偏差仅为0.74％。原因之一是，由于背压调节模式不同，CDFS性能在组件环境和匹配环境中会有所不同。另一个原因是，这种预测方法没有考虑CDFS出口流量不均匀性对HPC性能的影响，但是流量的最大相对偏差仅为0.74％。