航空发动机空气系统和热分析的耦合计算与试验验证

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英文篇名：The coupling calculation and experiment research of the secondary air system and thermal analysis in aero-engine 作者：梁津华 ; 赵维维 ; 徐连强 ; 邹咪 ; 马建栋 英文作者：LIANG Jin-hua;ZHAO Wei-wei;XU Lian-qiang;ZOU Mi;MA Jian-dong;AECC Sichuan Gas Turbine Establishment; 关键词：航空发动机 ; 空气系统 ; 热分析 ; 热量交换 ; 耦合计算 ; 试验对比 ; 热平衡态 英文关键词：aero-engines;;secondary air system;;thermal analysis;;heat exchange;;coupling calculation;;experimental comparison;;thermal equilibrium 中文刊名：RQWL 英文刊名：Gas Turbine Experiment and Research 机构：中国航发四川燃气涡轮研究院; 出版日期：2019-06-15 出版单位：燃气涡轮试验与研究 年：2019 期：v.32;No.140 语种：中文; 页：RQWL201903006 页数：6 CN：03 ISSN：51-1453/V 分类号：28-32+56

摘要

针对航空发动机空气系统设计和热分析计算分开进行且不考虑发动机部件对空气系统换热影响的特点,结合热分析计算实际,通过计算空气与热端部件之间的热量交换,建立了空气系统和热分析的耦合计算方法,并通过试验予以了验证。计算结果和试验结果的对比表明,耦合与非耦合计算的腔室压力基本相同,但耦合计算的腔室温度更接近试验结果,耦合计算相比于非耦合计算与试验的温度误差减小9.7K,耦合计算方法有利于减小空气系统温度计算误差。
        The calculation of aero-engine secondary air system and thermal analysis were independent of each other and the influence of heat transfer of aero-engines components was ignored. In order to increase calculation accuracy, the heat exchange between air and hot section components were calculated, and the coupling algorithm was established between the secondary air system and thermal analysis. The results were validated by experiment. The comparison between calculation results and experiment results show that the pressure of coupling results and uncoupling results were basically the same, but the temperature of coupling results was closer to the experiment results. The coupling calculation has good effect on reducing temperature calculation error of the secondary air system of aero-engines.

引文

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