多级环境下轴流压气机反方法改型设计

基于全三维黏性流场求解,对多级轴流压气机叶片反方法改型设计技术进行了研究。介绍了所采用的数值求解方法,之后阐述了压气机叶片反方法设计的基本原理和流程。为验证方法的有效性,对某型高压压气机后四级初始设计结果进行了数值模拟和反方法改型设计,基于对数值结果的分析提出了多级环境下叶片表面载荷分布调整的具体方法。反方法改型设计结果表明,通过合理调整多个叶片表面载荷分布,提升了四级压气机整体气动性能。设计点绝热效率基本保持不变,压比提高6.57%。 

Redesign of axial compressor under multistage environment using inverse method

An inverse method for multistage axial compressor was researched based on the fully three dimensional viscous flow solution. The numerical method used was introduced, and the theory and procedure of inverse design method were described. In order to verify the effectiveness of present method, the initial design results of certain high pressure compressor at rear four stages were simulated and redesigned by using present inverse method. The specific method of tailoring the pressure loading distribution on the blade surfaces under multistage environment was developed based on the analysis of the numerical result. The redesigned result indicated that the whole aerodynamic performance of the four stage compressor was enhanced after tailoring the pressure loading distribution on multi blade rows reasonably. The adiabatic efficiency of the whole compressor almost remained unchanged, while the pressure ratio was increased by 657% at the design point.