合成射流控制压气机分离流动及工程应用探索  

Separation flow control and engineering application of synthetic jets in compressor

作　　者：郑新前[1] 张扬军[1] 周盛[2] 

机构地区：[1]清华大学汽车安全与节能国家重点实验室,北京100084 [2]北京航空航天大学航空发动机气动热力国防科技重点实验室,北京100083

出　　处：《中国科技论文在线》2008年第8期547-552,共6页

基　　金：柴油机高增压技术国防科技重点实验室基金项目(9140C3301020601);中国博士后科学基金资助项目(20060400088)

摘　　要：针对航空高负荷轴流压气机中的流动分离问题,研究了在轴流压气机叶片和机匣上开孔两种方式引入合成射流对于流动分离控制的有效性及相应的工程应用前景。在高负荷轴流压气机叶栅风洞试验台上,验证了在叶片上开倾斜小孔产生合成射流旋涡发生器控制流动分离的有效性,并随着微机电系统(MEMS)技术的日益成熟,为合成射流旋涡发生器的工程应用提供了条件。通过在机匣上开孔产生合成射流机匣激励器,其控制流动分离的有效性在低速环形叶栅风洞上得到了验证。在分析合成射流机匣激励器与传统处理机匣之间的关系后提出一个新观点:合成射流机匣激励器本质上是一种新型的机匣处理,传统机匣处理的扩稳机理与合成射流机匣激励器的扩稳机理相同。As to the flow separation in an aeronautic high-loading axial compressor, the paper studied the flow separation control efficiency and the related engineering application of synthetic jet introduction through cavities on the axial compressor blade or case. On the wind tunnel cascade experimental rig, the feasibility to control the flow separation of high loading axial compressor cascade through a synthetic jet vortex generator formed by pitched holes on blades was verified. And the engineering application of synthetic jet vortex generator was facilitated with the maturation of Micro-electromechanical Systems （MEMS） technology. Through the synthetic casing exciter produced by a cavity on the case, the efficiency of flow separation control in the low speed circumferential wind tunnel cascade was proved. A new viewpoint was put forward after analyzing the relationship between the synthetic jet casing exciter and the traditional treatment case： the synthetic jet casing exciter is a kind of new casing treatment essentially and the mechanism of the traditional casing treatment is the same as that of the synthetic jet casing exciter.

关 键 词：动力机械及工程 分离控制 合成射流 压气机 机匣处理 

分 类 号：V235[航空宇航科学与技术—航空宇航推进理论与工程]