进气预旋对压气机性能影响规律研究  

Influence of Inlet Guide Pre-Whirl on Compressor Performance

作　　者：刘莹[1] 黄磊[1] 葛炜[1] 马国玲 佟鼎[1] 徐思友[1] 

机构地区：[1]中国北方发动机研究所(天津),天津300400 [2]大同北方天力增压技术有限公司,大同037036

出　　处：《内燃机工程》2016年第5期170-175,182,共7页Chinese Internal Combustion Engine Engineering

基　　金：国防重点实验室基金项目(9140C330104120C33119);国防基础科研计划项目(B0920110003)

摘　　要：针对某种普通压气机采用数值模拟和试验相结合的方法进行了不同正负预旋压气机性能特性的研究,获得了不同正负预旋角对压气机性能的影响规律,详细分析了产生这些影响的内部流动机制。研究结果表明:正预旋可以最大拓宽压气机的喘振流量18%,最高效率提高了2%;负预旋可以最大拓宽压气机的阻塞流量5%,而最高效率下降了7%。For a common compressor, its performance characteristics with different positive and negative pre-whirls were analyzed by utilizing numerical simulation and experimentation. The influences of different positive and negative pre-whirl angles on compressor performances were acquired, and the internal flow mechanism which causes the influences was analyzed in detail. The results show that the positive pre-whirl can enlarge compressor surge mass flow and maximum efficiency by 18% and 2% respectively, and that the negative pre-whirl can enlarge choke mass flow by about 5%, but with maximum efficiency reduced by 7%.

关 键 词：内燃机 压气机 预旋角 性能特性 

分 类 号：TK423.5[动力工程及工程热物理—动力机械及工程]