喷嘴防积炭结构设计与优化
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- 英文论文题名：Design and Optimization of Nozzle Structure for Coke Suppression
- 论文作者：何悟 ; 赵学成 ; 蒋雪辉
- 英文论文作者：He Wu ; Zhao Xuecheng ; Jiang Xuehui ; Beijing Power Machinery Institute ; The Third Academy of CASIC
- 年：2016
- 作者机构：北京动力机械研究所;
- 论文关键词：喷嘴 ; 防积炭 ; 结构设计 ; 优化 ; 数值模拟
- 英文论文关键词：nozzle ; coke suppression ; structure design ; optimization ; simulation
- 会议召开时间：2016-10-31
- 会议录名称：探索 创新 交流（第7集）——第七届中国航空学会青年科技论坛文集（下册）
- 英文会议录名称：Discovery,Innovation and Communication——Proceedings of 7th CSAA Science and Technology Youth Forum
- 语种：中文
- 分类号：V235.11
- 学会代码：ZGHU
- 会议名称：探索 创新 交流（第7集）——第七届中国航空学会青年科技论坛
- 会议地点：中国广东中山
- 主办单位：中国航空学会
- 学会名称：中国航空学会
- 页数：7
- 文件大小：3718k
- 原文格式：O
- 会议级别：全国
摘要
为解决某涡轮发动机燃烧室喷嘴积炭严重的问题,通过在原型喷嘴上增加吹气帽罩并多次优化改进,最终优化的喷嘴满足防积炭使用要求,喷嘴吹气帽罩的壁温较低。研究结果表明:紧邻喷孔出口下游3mm处是否存在回流区不是评判防积炭设计是否合理的必然条件,在喷孔下游约6mm处若无回流区,并且在此处燃料被吹离至该截面的下游,可有效隔离喷嘴壁面高温,达到防积炭的效果。
In order to suppress coke for fuel nozzles,a cap is added on the nozzle and optimized for several times.The final optimization of the nozzle structure satisfies the requirements and the wall temperature of the nozzle cap is low.The research results show whether there is a backflow region in the downstream 3mm to the nozzle hole can not be used to judge the effectiveness of suppressing coke.If there is not a backflow region in the downstream 6mm to the nozzle hole and the fuel is blowed away here,it can satisfy requirements of suppressing coke and avoiding high wall temperature.
In order to suppress coke for fuel nozzles,a cap is added on the nozzle and optimized for several times.The final optimization of the nozzle structure satisfies the requirements and the wall temperature of the nozzle cap is low.The research results show whether there is a backflow region in the downstream 3mm to the nozzle hole can not be used to judge the effectiveness of suppressing coke.If there is not a backflow region in the downstream 6mm to the nozzle hole and the fuel is blowed away here,it can satisfy requirements of suppressing coke and avoiding high wall temperature.
引文
[1]黄艳斐,朱岳麟,熊常健,等.航空发动机喷嘴结焦积炭的性质[J].北京航空航天大学学报,2011(6),37(6):753-756.
[2]Chen Alan Y,Dang Lisa.Characterization of Supercritical JP-7's Heat Transfer and Coking Properties[R].AIAA,2002-0005,2002.
[3]王旭全.积炭对发动机性能的影响[J].黑龙江交通科技,2008(5):75-76.
[4]刘红普,唐建生.发动机热浴现象对喷油器积炭的影响[J].农业装备与车辆工程,2007(6):41-43.
[5]Joseph E,Faucher.Anti-Coke Fuel Nozzle.United States Patent 4,362,002 1982.
[6]Bachelor G.K.And C.Shen.Themophoretic Deposition of Particles in Gas Flowing Over cold surfaces[J].Colloid Interface Science,1985,107(1).
[7]Hemandz R.and S.D.Mercer,Carbon Deposition Characteristics of L02/HC Propellants[R].23rd Joint Propulsion Conference,San Diego,CA.AIAA,87-1855,1987.
[8]陈锐,周彤,顾铭企.某型发动机主燃烧室积炭的排除[J].航空发动机,1996(3):16-20.
[9]幸泽宽.航空发动机积炭清洗剂初探[J].表面工程杂志,1996(2):28-31.
[10]赵其寿.激光测雾仪研制[R].北航科学技术报告,BH-B819,1982.
[11]何悟,关B洪涛,蔡林,等.湍流燃烧模型在燃烧室数值计算中的对比分析[J].热科学与技术,2011,i0(4):360-365.
[2]Chen Alan Y,Dang Lisa.Characterization of Supercritical JP-7's Heat Transfer and Coking Properties[R].AIAA,2002-0005,2002.
[3]王旭全.积炭对发动机性能的影响[J].黑龙江交通科技,2008(5):75-76.
[4]刘红普,唐建生.发动机热浴现象对喷油器积炭的影响[J].农业装备与车辆工程,2007(6):41-43.
[5]Joseph E,Faucher.Anti-Coke Fuel Nozzle.United States Patent 4,362,002 1982.
[6]Bachelor G.K.And C.Shen.Themophoretic Deposition of Particles in Gas Flowing Over cold surfaces[J].Colloid Interface Science,1985,107(1).
[7]Hemandz R.and S.D.Mercer,Carbon Deposition Characteristics of L02/HC Propellants[R].23rd Joint Propulsion Conference,San Diego,CA.AIAA,87-1855,1987.
[8]陈锐,周彤,顾铭企.某型发动机主燃烧室积炭的排除[J].航空发动机,1996(3):16-20.
[9]幸泽宽.航空发动机积炭清洗剂初探[J].表面工程杂志,1996(2):28-31.
[10]赵其寿.激光测雾仪研制[R].北航科学技术报告,BH-B819,1982.
[11]何悟,关B洪涛,蔡林,等.湍流燃烧模型在燃烧室数值计算中的对比分析[J].热科学与技术,2011,i0(4):360-365.