燃氢涡轮航空发动机燃烧试验技术发展现状与分析OA

The development of hydrogen-burning turbine aero-engine combustor is still in its infancy,and the research on key technologies of hydrogen combustion,as well as the development and performance assessment of the combustor,all require massive experiments.In order to support the research on hydrogen combustors with high efficiency,stable,and low-emission,based on physical and chemical characteristics of hydrogen fuel,the challenges of hydrogen combustion including mixing,flashback,combustion instability,and high NOx emissions are analyzed.The three hydrogenfuel combustion organization modes,namely multinozzle combustion based on a conventional swirl combustor,micromix premixed combustion,and micromix diffusion combustion,are ex-pounded,and the advantages and disadvantages of different combustion organization modes are analyzed.Mean-while,the development of experimental technologies for hydrogen combustion are summarized.The current re-search is mainly focused on gas turbine generators,while for hydrogen-burning turbine aero-engines,only the demonstrations or performance verification tests are conducted based on whole engine test platforms,lacking systematic experimental research.Therefore,the main test subjects,difficulties,and key technologies of single cup,multiple cups and full annular combustors are sorted out,providing references for key technologies break-throughs,combustor optimization,and the development of experimental technologies.