跨音压气机总温畸变下数值模拟研究
Numerical Simulation for a Transonic Compressor With Total Temperature Distortion
赵红亮 1邱佳慧 2张敏 2杨晨 2杜娟 2聂超群2
作者信息
- 1. 华北电力大学能源动力与机械工程学院,北京 102206
- 2. 中国科学院工程热物理研究所数字孪生研究中心,北京 100190;中国科学院先进能源动力重点实验室,北京 100190;中国科学院轻型动力创新研究院,北京 100190;中国科学院大学工程科学学院,北京 100049
- 折叠
摘要
为了研究进气总温畸变对轴流式跨音压气机性能和稳定性的影响,以达姆施塔特跨音压气机为研究对象,针对不同周向范围的总温畸变区进行了冻结转子法稳态和瞬态转静法非稳态的三维全环数值模拟研究.结果表明:在设计转速条件下,高温畸变区的周向范围越大,冻结转子法稳态和瞬态转静法非稳态计算结果的差距越小;在高温畸变区周向范围为180°时,通过对最高效率工况点的内部流场分析,发现冻结转子法稳态计算无法准确捕捉畸变区的周向偏转;高温畸变区的周向范围较大时,平行压气机理论模型对近失速工况点的预测值更接近非稳态计算结果;通过对非稳态时均结果进行轨道法分析,发现高温畸变区的周向范围越大,不同周向位置处的转子叶片的运行特性差异越大.
Abstract
To study the effect of the total temperature distortion on the performance and stability of the axial transonic compressor,three-dimensional full annular numerical simulations are performed to compare the frozen rotor steady and transient rotor stator unsteady calculations for the different circumferential ranges of the total temperature distortion region using the Darmstadt transonic compressors as the object of study in this paper.The results show that the larger the circumferential range of the high-temperature distortion region at the design speed conditions,that the difference between the frozen rotor and the transient rotor stator calculations is smaller;According to the analysis of the internal flow field at the highest efficiency point under the 180° circumferential distortion region,it is found that the frozen rotor could not capture accurately the circumferential deflection of the distortion region;The closer the predictions obtained from parallel compressor theory for the near stall operating points to the unsteady calculations when the circumferential range of the high temperature distortion region is larger;The orbit method analysis reveals that the larger the circumferential range of the distortion region,the greater variation in the operating characteristics of the rotor blades at different circumferential positions.
关键词
轴流式跨音压气机/冻结转子法/瞬态转静法/总温畸变/平行压气机/轨道法/三维数值模拟Key words
axial flow transonic compressor/frozen rotor/transient rotor stator/total temperature distortion/parallel compressor theory/the orbit method/three-dimensional numerical simulation引用本文复制引用
基金项目
国家重大科技专项(2017-Ⅱ-0004-0017)
国家重大科技专项(2017-Ⅱ-0005-0018)
出版年
2024
NETL
NSTL
维普
万方数据