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为精简附面层抽吸结构、提升吸附式压气机的工程应用性,提出将串列叶栅技术与端壁附面层抽吸技术相结合的主/被动流动联合控制技术。以某多级高负荷吸附式压气机末级静子作为研究对象,借助数值模拟的方法,探讨串列叶栅技术、端壁附面层抽吸技术以及主/被动流动联合控制技术对原型扩压叶栅内部流场结构及气动损失的影响。研究结果表明,主/被动流动联合控制技术结合了两种流动控制技术的优势,对原型高负荷扩压叶栅内部复杂流动的控制效果明显优于单一流动控制技术,通过应用更少的附面层抽吸量,有效地抑制了角区失速的促发,缓解了二维叶型分离流动,叶栅出口参数沿展向分布更为均匀,当端壁附面层抽吸总量为进口流量的0.90%时,总压损失降低了59%。
In order to streamline the suction structure of the overburden and improve the engineering applicability of the adsorption compressor, a joint primary / passive flow control technology is proposed, which combines the cascade cascade technology with the suction technology of the end wall. Taking a multi-stage high-load adsorption compressor final stage stator as the research object, numerical simulation method was used to explore the cascade cascade technology, the end wall surface layer suction technology and the main / passive flow joint control technology to the prototype diffusion Effect of Flow Field Structure and Pneumatic Loss on Cascade. The results show that the combined control technology of main and passive flow combines the advantages of the two flow control technologies, and the control effect on the complex flow in the prototype high-load expansion cascade is obviously better than that of the single flow control technology. The amount of layer suction can effectively suppress the stalling in the corner region and alleviate the two-dimensional leaf-shaped separation flow. The outlet parameters of the cascade are more uniform along the span direction. When the total amount of suction at the end wall is the inlet flow Of 0.90%, the total pressure loss is reduced by 59%.