摘要
针对航空燃气涡轮发动机整机及燃烧室部件试验的燃气分析测试,介绍了测试的原理和系统组成,完善了液体碳氢燃料的计算方法,发展了气体燃料的计算方法;分析了燃气组分测量值误差对燃烧参数计算结果的影响,讨论了取样方式及混合式取样器结构的影响,给出了混合式取样器结构是否合理的判定条件;对比了高压全环燃烧室试验的燃气分析和常规测试的结果,结果表明:使用设计合理的混合式取样器、保证足够的测点密度和使用合理配置的燃气分析测试系统,余气系数的测量精度优于5%,并对热电偶法和燃气分析法燃烧效率偏差进行了分析.
Targeting gas analysis test in the aeroengine and combustion chamber experi- ments, the principle and system of gas analysis test were introduced. The computing method for Liquid fuel used was optimized, and the method for gas fuel was developed. The influ- ence of the error about gas component test on the computation result of combusting parame- ter was analyzed. The effects of mixed sampling means and sampler structure were dis- cussed, and the factors about judging rationality of mixed sampler structure were provided. The measurement results of gas analysis and general testing were compared. Excess air coef- ficient is better than 5% with reasonable mixed sampler structure and enough measuring points and reasonable gas analysis system. The deviation of combustion efficiency from ther- mocouple and gas analysis is analyzed.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2015年第11期2568-2574,共7页
Journal of Aerospace Power
关键词
燃气分析计算方法
误差分析
燃烧室性能
燃气取样
燃烧效率
computing method of gas analysis
error analysis
combustor performance
gas sampler
combustion efficiency
