纯净空气来流下支板凹腔耦合超燃燃烧室性能研究

推进技术 ›› 2015, Vol. 36 ›› Issue (12): 1868-1873.

纯净空气来流下支板凹腔耦合超燃燃烧室性能研究

王建臣¹,林宇震¹,郭新华²,张弛¹,赵永胜¹

北京航空航天大学能源与动力工程学院/航空发动机气动热力国家级重点实验室，北京100191,北京航空航天大学能源与动力工程学院/航空发动机气动热力国家级重点实验室，北京100191,北京动力机械研究所高超声速冲压发动机技术重点实验室，北京100074,北京航空航天大学能源与动力工程学院/航空发动机气动热力国家级重点实验室，北京100191,北京航空航天大学能源与动力工程学院/航空发动机气动热力国家级重点实验室，北京100191

发布日期:2021-08-15
作者简介:王建臣(1986—)，男，博士生，研究领域为超声速燃烧。

ExperimentalInvestigationofPerformanceofaStrut-CavityBasedScramjetCombustorinCleanAir

NationalKeyLaboratoryofScienceandTechnologyonAero-EngineAero-thermodynamics， SchoolofEnergyandPowerEngineering，BeihangUniversity，Beijing100191，China,NationalKeyLaboratoryofScienceandTechnologyonAero-EngineAero-thermodynamics， SchoolofEnergyandPowerEngineering，BeihangUniversity，Beijing100191，China,ScienceandTechnologyonScramjetLaboratory，BeijingPowerMachineryInstitute，Beijing100074，China,NationalKeyLaboratoryofScienceandTechnologyonAero-EngineAero-thermodynamics， SchoolofEnergyandPowerEngineering，BeihangUniversity，Beijing100191，China and NationalKeyLaboratoryofScienceandTechnologyonAero-EngineAero-thermodynamics， SchoolofEnergyandPowerEngineering，BeihangUniversity，Beijing100191，China

Published:2021-08-15

摘要/Abstract

摘要： 在纯净空气来流下，通过试验对以支板凹腔耦合方式来稳焰的超燃燃烧室进行了研究，以液态航空煤油为燃料，喷射分为支板单独喷射和支板壁面组合喷射。结果表明:支板单独喷射，轴向位置靠前或者燃油当量比增加0.1，壁面压力分布总体越高，壁面压力峰值也更高；燃油当量比相同的情况下，支板单独喷射的壁面压力分布要比支板和壁面组合喷射的总体偏高，但壁面压力提升的起始位置更靠前；通过一维冲量法分析得到，燃烧室最低马赫数低于0.5，沿轴向中间大部分区域为亚声速；支板单独喷射轴向位置靠前，燃烧效率更高；当量比相同的情况下，支板单独喷射的燃烧效率要比支板和壁面组合喷射的燃烧效率更高。

关键词: 纯净空气；超燃；支板；凹腔中图分类号:V211.72文献标识码:A文章编号:1001-4055(2015)12-1868-06DOI:10.13675/j.cnki.tjjs.2015.12.016

Abstract: Experimentswereperformedtostudytheperformanceofastrut-cavitybasedscramjetcombus.torincleanair.Thefuelwasliquidkerosenethatwasinjectedfromthesidewallsofthestrutorbothofthestrutandthesidewallsofthecombustor.Theresultsshowthat，whenthefuelwasinjectedupstreamfromstrutaloneorthefuelequivalenceratioincreasedby0.1，theoverallwallpressureandthepeakwallpressurewerehigher.Whenthetotalfuelequivalenceratiowasfixed，theoverallwallpressureoftheinjectionfromstrutalonewerehigherthanthatfrombothofthestrutandthesidewallsofthecombustor，buttheoriginalpressurerisewasup.stream.Aone-dimensionalanalysiscodewasusedtoobtaintheaxialMachnumberandthecombustionefficien.cy.TheminimumcombustorMachnumberwaslowerthan0.5，andmostareaofthecenterofthecombustorwassubsonic.Whenthefuelwasinjectedupstreamfromstrutalone，thecombustionefficiencywashigher.Whenthetotalfuelequivalenceratiowasfixed，thecombustionefficiencyoftheinjectionfromstrutalonewashigherthanthatfrombothofthestrutandthesidewallsofthecombustor.

Key words: Cleanair；Supersoniccombustion；Strut；Cavity

王建臣,林宇震,郭新华,张弛,赵永胜. 纯净空气来流下支板凹腔耦合超燃燃烧室性能研究[J]. 推进技术, 2015, 36(12): 1868-1873.

WANGJian-chen¹,LINYu-zhen¹,GUOXin-hua²,ZHANGChi¹,ZHAOYong-sheng¹. ExperimentalInvestigationofPerformanceofaStrut-CavityBasedScramjetCombustorinCleanAir[J]. Journal of Propulsion Technology, 2015, 36(12): 1868-1873.

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