胡秋晨,陈玉春,贾琳渊,黄 兴.引气冷却模型对涡轴发动机总体性能的影响研究[J].航空工程进展,2014,5(1):109-115
引气冷却模型对涡轴发动机总体性能的影响研究
Research on the influence of bleeding and cooling model to the performance of turboshaft engine
投稿时间:2013-03-02  修订日期:2013-05-23
DOI:
中文关键词:  关 键 词:自由涡轮涡轴发动机  压气机引气模型  涡轮冷却模型  引气量  总体性能
英文关键词:turboshaft engine with free turbine  compressor bleeding model  turbine cooling model  the amount of bleeding  performance
基金项目:
作者单位E-mail
胡秋晨 西北工业大学 375961389@qq.com 
陈玉春 西北工业大学  
贾琳渊 西北工业大学  
黄 兴 西北工业大学  
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中文摘要:
      针对目前高热力循环参数和高引气量的自由涡轮涡轴发动机,建立了考虑压气机引气位置可变和涡轮中冷却气参与做功的涡轴发动机性能计算模型。当压气机引气位置变化时,采用流量平衡和功率平衡同时修正法计算发动机性能;涡轮冷却计算模型则考虑了第一级导向器叶片冷却气的做功。与传统涡轴发动机性能计算模型的计算结果对比表明,本文的计算模型能够合理反映引气量和引气位置对发动机特性的影响,更接近发动机的真实物理过程,可为发动机空气系统设计提供输入。
英文摘要:
      For free turbine turboshaft engine with high thermodynamic parameters and high-bleed, a new turboshaft performance calculation model which considers bleed position and cooling air expansion work. The model of air bleeding in the middle of the compressor corrects the flow balance and power balance at the same time. The turbine cooling model considers the cooling air expansion work. The calculation results obtained by the new model are analyzed and compared with that of simple turbine bleed and cooling model, which proves that the new model can obtain the influence of the amount of bleeding and bleeding position to the performance of turboshaft engine. The new model are close to the true physical process of turboshaft engine, and can offer input to the air system.
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