聚乙烯在固体燃料冲压发动机中的燃速影响因素研究

doi:10.3969/j.issn.1000-1093.2014.11.008

兵工学报 ›› 2014, Vol. 35 ›› Issue (11): 1783-1789.doi: 10.3969/j.issn.1000-1093.2014.11.008

聚乙烯在固体燃料冲压发动机中的燃速影响因素研究

陈雄¹，成红刚^1,2，周长省¹，朱国强¹

（1.南京理工大学机械工程学院，江苏南京 210094； 2.中国兵器工业集团公司导航与控制技术研究所北京 100089）

收稿日期:2013-11-12 修回日期:2013-11-12 上线日期:2015-01-05
作者简介:陈雄(1977—)男副教授，硕士生导师
基金资助:
总装备部预先研究项目（404040301）

Research on Influence of Selected Factors on Burning Rate of Polyethylene in Solid Fuel Ramjet

CHEN Xiong¹， CHENG Hong-gang^1,2， ZHOU Chang-sheng¹， ZHU Guo-qiang¹

(1.School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China;2.Navigation and Control Technology Institute, China North Industries Group Corporation, Beijing 100089, China)

Received:2013-11-12 Revised:2013-11-12 Online:2015-01-05

摘要/Abstract

摘要： 针对影响聚乙烯（PE）在固体燃料冲压发动机燃烧室中的燃速因素，采用数值仿真与直连式实验相结合的方法，研究了空气质量通量和固体燃料内径对PE燃料平均燃速和当地燃速的影响，分析了无量纲回流区长度与突扩台阶高度的关系。研究表明，PE燃料平均燃速与空气质量通量呈幂函数递增关系，与固体燃料内径呈幂函数递减关系；点火过程的影响以及湍流燃烧模型对突扩台阶后回流区内传热的计算精度是引起回流区内计算结果与实验结果误差较大的重要原因；无量纲回流区长度与突扩台阶高度呈线性递增函数关系。研究结果对固体燃料冲压发动机燃烧室的设计具有一定的参考价值。

关键词: 兵器科学与技术, 固体燃料冲压发动机, 聚乙烯, 燃速

Abstract: Numerical simulation and direct test methods are used to research the influence of selected factors on the burning rate of polyethylene in a solid fuel ramjet. The influences of air mass flux and fuel internal diameter on average burning rate and local average burning rate are studied. The relationship between reattachment length ratio and step height ratio is analyzed. The results show that the average burning rate of the fuel is increased by power function with the increase in air mass flux, and decreased by power function with fuel internal diameter. The difference between simulation and experimental results is caused by the ignition process and the computational accuracy of turbulent combustion model to predict the heat transfer behind a sudden expansion step. The reattachment length ratio increased by liner function with step height ratio.

Key words: ordnance science and technology, solid fuel ramjet, polyethylene, burning rate

中图分类号:

V435

陈雄，成红刚，周长省，朱国强. 聚乙烯在固体燃料冲压发动机中的燃速影响因素研究[J]. 兵工学报, 2014, 35(11): 1783-1789.

CHEN Xiong， CHENG Hong-gang， ZHOU Chang-sheng， ZHU Guo-qiang. Research on Influence of Selected Factors on Burning Rate of Polyethylene in Solid Fuel Ramjet[J]. Acta Armamentarii, 2014, 35(11): 1783-1789.

参考文献

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聚乙烯在固体燃料冲压发动机中的燃速影响因素研究

Research on Influence of Selected Factors on Burning Rate of Polyethylene in Solid Fuel Ramjet

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