摘要
针对轴流压气机在实际工作中遇到的叶片表面磨损、积垢问题,本文以NASA Stage 35单级轴流压气机模型为研究对象,建立了数值计算模型,以压气机的静叶部分为主要研究对象,使用更改静叶叶片表面粗糙度值和不均匀地更改静叶叶型厚度两种不同方法模拟压气机表面积垢情况,得到压气机效率、压比等性能的衰退情况与不同模拟方法的关系,以及压气机不同程度积垢下的流场变化情况。计算结果表明:更改叶片表面粗糙度对压气机的效率性能影响要大于对压比的影响,叶型厚度的变化会明显影响压气机的稳定工作范围。研究结果可为确定压气机清洗周期和运行寿命预估提供借鉴。
In this study,the blade surface wear and fouling encountered in the actual operation of an axial compressor is investigated.A numerical calculation model is established,and the stator blade of a compressor(NASA stage 35 single-stage axial compressor)is used as the research object.Fouling on the compressor surface is simulated by two different methods.The first method involves changing the surface roughness value of the stator blade,and the second method involves unevenly changing the blade profile thickness.The relationship between the two simulation methods and the degradation compressor efficiency and pressure ratio is derived,as well as the change of the inner flow field of the compressor under fouling conditions.The calculation results show that compared with the pressure ratio,changing the blade surface roughness has greater influence on the compressor efficiency,and the change of blade thickness will significantly affect the stable working range of the compressor.This study can provide references for the determination of the cleaning cycle and estimation of compressors service lives.
作者
孙海鸥
王立松
王忠义
万雷
SUN Haiou;WANG Lisong;WANG Zhongyi;WAN Lei(College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2018年第11期1773-1778,共6页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(51309063 51679051)
中央高校基本科研业务费专项资金项目(HEUCFP201721)
关键词
压气机
积垢
粗糙度
静叶叶片
性能参数
内部流场
compressor
fouling
roughness
stator blade
performance parameter
inner flow field