中国电机工程学报2024，Vol.44Issue(11)：4395-4405,中插18,12.DOI:10.13334/j.0258-8013.pcsee.230072
工业燃机轴流压气机级间引气结构的压损特性
Pressure Loss Characteristic of an Inter-stage Bleed Air Structure in Axial Compressors of Industrial Gas Turbines
摘要
Abstract
To study the pressure loss characteristics of the inter-stage bleed air structure and provide reference for the design of relevant structures in industrial gas turbines,a numerical study of bleed air structures in real industrial gas turbine multistage axial compressors is carried out by simulation,and the numerical domain including several main flow channels,bleed slot,bleed cavity,and off-take duct of the compressor.The results show that,under a small bleeding rate,the pressure loss due to the flow stagnation and turning at the bleed slot inlet accounts for more than 50%of the total pressure loss.Under a big bleeding rate,the pressure loss due to the flow mixing in the bleed cavity,and the flow separation at the inlet of the off-take duct account for more than 70%of the total pressure loss.The flow loss in different regions is affected by the bleed rate,the Reynolds number of the off-take ducts,and the hydraulic diameter of the bleed cavities.A zero-dimensional inter-stage bleed model can be trained by the neural network method for further performance evaluation.关键词
工业燃机/轴流压气机/引气/数值仿真/缩放仿真Key words
industrial gas turbine/axial compressor/bleeding/numerical simulation/numerical zooming分类
能源科技引用本文复制引用
丁骏,戴斌,唐燕佳,谢健,郑群,蓝吉兵..工业燃机轴流压气机级间引气结构的压损特性[J].中国电机工程学报,2024,44(11):4395-4405,中插18,12.基金项目
中国博士后科学基金(2020M671672) （2020M671672）
浙江省"领雁"研发攻关计划(2022C01118). China Postdoctoral Science Foundation(2020M671672) （2022C01118）
"Leading Goose"R&D Program of Zhejiang(2022C01118). （2022C01118）
