基于MT药剂体系的动力型红外诱饵燃烧流场仿真分析  

The combustion flow analysis of kinematic infrared decoybased on MT pyrotechnics

作　　者：蒋冲[1] 赵非玉[1] 过凯[1] 尹庆国 张静元 JIANG Chong;ZHAO Feiyu;GUO Kai;YIN Qingguo;ZHANG Jingyuan(Academy of Opto-electronics,China Electronics Technology Group Corporation(AOE CETC),Tianjin 300308,China)

机构地区：[1]中国电子科技集团公司光电研究院,天津300308

出　　处：《兵器装备工程学报》2024年第5期40-46,共7页Journal of Ordnance Equipment Engineering

摘　　要：为得到动力型诱饵燃烧产物浓度场和温度场,在分析了MT药剂体系在空气中的燃烧区结构和主要反应基础上,建立了流场与化学反应耦合的二维轴对称模型。通过数值仿真分析了不同组分、环境压力和进气流速对燃烧流的影响。结果表明,MgF2对MT体系光谱的影响显著,Mg含量的增加有助于提高辐射强度,但随着Mg的进一步增加,更多的Mg没有参与反应,不利于改善辐射强度。环境压力对最高温度影响不大,但会影响温度分布和产物浓度。来流速度对核心反应温度和产物浓度影响较小,但会将高温区和产物限定在较小区域,从而影响辐射强度。上述结果可为动力型诱饵的红外辐射特性设计提供参考。In order to obtain the concentration field and temperature field of the combustion products of the kinematic infrared decoy,a two-dimensional axisymmetric model coupling the flow field and the chemical reaction was established on the basis of analyzing the combustion zone structure and main reaction of the MT system in air.The influence of different components,ambient pressure and inlet air velocity on the combustion flow was analyzed by numerical simulation to further study its radiation characteristics and design a kinematic infrared decoy,which meets the requirements.It was concluded that the effect of MgF 2 on the spectrum of the MT system was significant,and the increase of magnesium powder content helped to increase the radiation intensity.However,with the further increase of magnesium,more magnesium did not participate in the reaction,which is not conducive to improving the radiation intensity.Ambient pressure has little effect on the maximum temperature,but affects the temperature and product concentration of the production.The inflow velocity has little effect on the core reaction temperature and product concentration,but it will limit the high-temperature zone and products to a smaller area,thereby affecting the radiation intensity.The above results can provide reference for the design of infrared radiation characteristics of kinematic infrared decoys.

关 键 词：动力型红外诱饵 燃烧流场 化学反应动力学 Mg/PTFE MTV 

分 类 号：TJ535[兵器科学与技术—军事化学与烟火技术]