脉冲点火射流与高氯酸铵/端羟基聚丁二烯固体推进剂耦合燃烧的试验研究及数值模拟

doi:10.3969/j.issn.1000-1093.2018.08.007

兵工学报 ›› 2018, Vol. 39 ›› Issue (8): 1507-1514.doi: 10.3969/j.issn.1000-1093.2018.08.007

脉冲点火射流与高氯酸铵/端羟基聚丁二烯固体推进剂耦合燃烧的试验研究及数值模拟

叶振威，余永刚

（南京理工大学能源与动力工程学院，江苏南京 210094）

收稿日期:2017-11-28 修回日期:2017-11-28 上线日期:2018-09-21
通讯作者: 余永刚（1963—），男，教授，博士生导师 E-mail:yygnjust801@163.com
作者简介:叶振威（1992—），男，博士研究生。E-mail：yzwflame@163.com
基金资助:
国家自然科学基金项目（51176076）

Experimental Research and Numerical Simulation of Coupling Combustion of Pulsed Jet and AP/HTPB Propellant

YE Zhen-wei， YU Yong-gang

（School of Energy and Power Engineering， Nanjing University of Science and Technology， Nanjing 210094，Jiangsu，China）

Received:2017-11-28 Revised:2017-11-28 Online:2018-09-21

摘要/Abstract

摘要： 为了研究高氯酸铵/端羟基聚丁二烯(AP/HTPB)在底部排气药柱二次点火过程中的耦合振荡燃烧，建立了AP/HTPB二维三明治燃烧模型，气相区采用二步总包反应，使用用户自定义函数模拟点火射流的作用。在AP/HTPB与点火具的耦合燃烧试验背景下，进行了点火射流频率在125~500 Hz、热流密度峰值在1.9~3.9 MW/m²工况下的数值模拟。模拟结果表明：在振荡燃烧初始阶段，气相热反馈相对于点火射流作用较弱，由于点火射流的主导作用使得X组分（NH₄ClO₄）呈现周期性变化；由于气相温度上升，气相热反馈相对于点火射流作用较强，AP/HTPB燃烧逐渐稳定；点火射流热流密度的提高对AP/HTPB振荡燃烧有显著抑制作用，点火射流频率的提高对AP/HTPB振荡燃烧抑制作用较弱。

关键词: 复合固体推进剂, 高氯酸铵, 端羟基聚丁二烯, 脉冲点火射流, 振荡燃烧, 耦合燃烧

Abstract: An AP/HTPB two-dimensional sandwich combustion model is established to study the oscillating combustion process of AP/HTPB under the action of pulsed jet. A two-step total package reaction is used for the gas phase zone. The effect of pulsed jet is simulated by user defined functions (UDF). In the coupling combustion experiment of AP/HTPB and igniter, the numerical simulation is carried out at the pulse frequency of 125-500 Hz, and the peak value of heat flux is 1.9-3.9 MW/m². The results show that the gas-phase thermal feedback is weak relative to the pulsed jet in the initial stage of oscillating combustion. X component (NH₄ClO₄) is periodically changed because of the leading effect of pulsed jet. After the gas phase temperature rises, the gas phase thermal feedback is stronger than the effect of pulsed jet, the outflow effect is lost, and the AP/HTPB combustion is stabilized. The increase in heat flux density of ignition jet significantly inhibits the oscillating combustion of AP/HTPB, and the increase in ignition jet frequency has weaker inhibitory effect on AP/HTPB oscillating combustion.Key

Key words: compositesolidpropellant, ammoniumperchlorate, hydroxyl-terminatedpolybutadiene, pulsedjet, oscillatingcombustion, couplingcombustion

中图分类号:

V512⁺.3

叶振威，余永刚. 脉冲点火射流与高氯酸铵/端羟基聚丁二烯固体推进剂耦合燃烧的试验研究及数值模拟[J]. 兵工学报, 2018, 39(8): 1507-1514.

YE Zhen-wei， YU Yong-gang. Experimental Research and Numerical Simulation of Coupling Combustion of Pulsed Jet and AP/HTPB Propellant[J]. Acta Armamentarii, 2018, 39(8): 1507-1514.

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脉冲点火射流与高氯酸铵/端羟基聚丁二烯固体推进剂耦合燃烧的试验研究及数值模拟

Experimental Research and Numerical Simulation of Coupling Combustion of Pulsed Jet and AP/HTPB Propellant

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