核心驱动风扇与压气机匹配特性研究

In order to improve the aerodynamic performance of compressor with core driven fan stage, it is essential to study the matching of core driven fan stage and high pressure compressor witch, which is of great importance to the core compressor component on next generation engine. Four issues should be considered on the matching of core driven fan stage and high pressure compressor: the matching design of one-dimensional, the matching design of through-flow, the matching design of blade modeling parameter, the matching of two-dimensional flow field, then three-dimensional simulation analysis and testing investigation were carried out. The testing results showed that: the variation tendency of core driven fan stage and high pressure compressor performance was coincident with three-dimensional simulation and the testing results, which verified the effectiveness of the matching performance of high efficiency core driven fan stage and high pressure compressor. By increasing the bypass ratio, the pressure ratio of core driven fan stage could be lower, bringing about the increase of the pressure ratio of high pressure compressor. On the contrary, the decrease of bypass ratio could lead to the lower pressure ratio of high pressure compressor.