摘要
从压差驱动力的角度,阐明了自适应吸附技术的原理及可行性。创新地发展和突破了适合自适应吸附耦合流动数值模拟的结构化匹配连接网格生成技术,并以某型压气机转子为对象,进行了叶片通道主流、自适应吸附内腔耦合流动的数值模拟。结果表明,叶顶喷气对于叶尖泄漏流起到一定封严作用;叶片内腔中流体随叶片同步旋转,静压力较高,在内腔和叶尖间隙之间形成压差驱动力;压差驱动力的大小跟叶顶喷气孔的位置相关,仔细选取自适应吸附结构参数可以在自适应吸附流路中建立起有效的内腔流动。
In order to demonstrate the technology on self-adaptive aspirated rotor, the theory and the feasibility of the technology is illustrated from the perspective of the differential drive. The grid generating technology for coupled flow in self-adaptive aspirated rotor, with matching points on the interface, was developed and broken through. Taking some compressor rotor as the research object, the numerical simulation on the main flow in the flow path and the coupled flow between the main flow and the blade case was carried out. The results show that tip injection can be used for aerodynamic seal on leakage flow in the gap~ and due to the high pressure in the blade case, there is differential drive between the blade case and the tip gap as the fluid in blade case co-rotates with the rotor blade. But the truth that the differential drive is related with the location of the injection hole indicates that establishment of fluid movement in the blade case can be obtained with enough research of the parameter on self-adaptive structure.
出处
《航空科学技术》
2017年第11期54-61,共8页
Aeronautical Science & Technology
基金
国家青年拔尖人才支持计划
航空科学基金(2013ZB24005)~~
关键词
自适应流动
压差驱动力
叶表吸附
叶顶喷气
气动封严
self-adaptive flow
differential drive
vane suction
tip injection
aerodynamic seal
