轴流压气机失速特性仿真

发布时间：2018-01-03 01:19

本文关键词：轴流压气机失速特性仿真　出处：《空军工程大学学报(自然科学版)》2016年03期 　论文类型：期刊论文

【摘要】：对某型低速轴流压气机转子和NASA Rotor 37跨声速转子进行了全通道定常和非定常数值仿真研究,采用了喷管模型和节流阀模型作为出口边界条件来取代常规的边界条件设置方法,分别通过调节计算域出口面积和节流系数的方法改变转子工作状态。计算结果显示:与出口边界采用固定背压值的方法相比,采用喷管模型和节流阀模型能够准确计算转子失速前后各个工况点的流动状态。采用节流阀模型时,通过调节节流系数能够准确地判定转子失速临界点,在继续节流的过程中能够计算出失速时转子通道内失速区的形成与发展情况。研究发现,叶尖区域流动失稳即叶尖局部回流区的出现和扩展在这两型压气机转子的失速过程中起重要作用。其中低速轴流压气机转子全通道非定常计算发现,在失速时转子叶尖部位首先出现两处回流区,且回流区范围随转数增加而扩大,最终形成相对明显的失速团结构。
[Abstract]:In a low-speed axial compressor rotor and NASA Rotor 37 transonic rotor was full channel steady and unsteady numerical simulation using the nozzle model and throttle valve model as the outlet boundary conditions to replace the conventional boundary condition setting method, respectively, to change the working state of rotor method domain outlet area and throttle coefficient by adjusting the meter. The results showed that: compared with the exit boundary method with a fixed back pressure, the nozzle model and throttle valve model can accurately calculate the flow state of each operating point of the rotor stall before and after. The throttle valve model, accurately determine the rotor stall critical point by adjusting the throttle coefficient to the formation and development in continue to throttle process to calculate the stall in the rotor channel stall area. The study found that tip flow instability is the local circumfluence tip We extended and play an important role in the process of the two type stall of the compressor rotor. The low-speed axial compressor rotor passage unsteady calculation found at stall first appeared in two parts of the rotor tip and the recirculation zone, recirculation region and expand with the speed increase, and ultimately form a relatively obvious stall cell structure.

【作者单位】：空军工程大学航空航天工程学院等离子体动力学重点实验室;
【基金】：国家自然科学基金(51336011)
【分类号】：V233
【正文快照】： 引用格式:宋国兴,李军,周游天,等.轴流压气机失速特性仿真[J].空军工程大学学报:自然科学版,2016,17(3):11?17.SONG Guoxing,LIJun,ZHOU Youtian,et al.Research on the Compressor Stall Characteristics with Simulation[J].Journal of Air Force Engineering University:Na

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