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Applicability of empirical models of isentropic efficiency and mass flow rate of dynamic compressors to jet engines
Progress in Aerospace Sciences ( IF 9.6 ) Pub Date : 2019-04-01 , DOI: 10.1016/j.paerosci.2019.01.007
Bei Yang , Xiande Fang , Lisheng Zhang , Fengting Zhuang , Minghua Bi , Chuang Chen , Gen Li , Xi Wang

Abstract The dynamic compressor is an essential component of a jet engine. For the jet engine, the empirical models of compressor isentropic efficiency and mass flow rate are needed for its control- and diagnostics-oriented dynamic simulation, and they are also more attractive than their theoretical counterparts in its design, analysis and performance simulation. This paper presents a comprehensive review on empirical models of isentropic efficiency and mass flow rate of dynamic compressors. The available models are mostly for turbocharger and automotive and marine engine compressors, and those for jet engine compressors are scarce. The performance maps of typical jet engine compressors were obtained from the GasTurb 13 software. Then, the prediction performances of the reviewed models for the performance maps are evaluated and analyzed. It is found that the accuracy of the models varies with compressors, and that it is feasible to use empirical models developed for turbocharger and automotive and marine engine compressors to jet engine compressors if proper models are chosen. The work provides a support for applying empirical models of isentropic efficiency and mass flow rate developed for the dynamic compressors of other fields to jet engine compressors.

中文翻译:

动态压气机等熵效率和质量流量经验模型对喷气发动机的适用性

摘要 动力压气机是喷气发动机的重要组成部分。对于喷气发动机,其面向控制和诊断的动态模拟需要压气机等熵效率和质量流量的经验模型,并且它们在设计、分析和性能模拟方面也比理论对应物更具吸引力。本文全面回顾了动态压缩机的等熵效率和质量流量的经验模型。可供选择的机型多为涡轮增压器和汽车及船用发动机压缩机,喷气发动机压缩机的机型稀缺。典型喷气发动机压缩机的性能图是从 GasTurb 13 软件中获得的。然后,对性能图的审查模型的预测性能进行评估和分析。发现模型的准确性因压缩机而异,如果选择合适的模型,则可以将针对涡轮增压器和汽车和船用发动机压缩机开发的经验模型用于喷气发动机压缩机。这项工作为将为其他领域的动态压缩机开发的等熵效率和质量流量经验模型应用于喷气发动机压缩机提供了支持。
更新日期:2019-04-01
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