考虑热弥散效应的ADN基无毒空间推力器内燃烧过程的数值模拟  

Numerical Simulation of Combustion Process in Non-toxic ADN-based Aerospace Thruster with Considering Thermal Dispersion Effect

作　　者：张涛[1] 李国岫[1] 陈君[1,2] 虞育松[1] 王梦[2] 

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044 [2]北京控制工程研究所,北京100190

出　　处：《火炸药学报》2016年第2期98-101,共4页Chinese Journal of Explosives & Propellants

摘　　要：以新型二硝酰胺铵(ADN)基无毒空间推力器为研究对象,通过建立ADN推进剂撞网雾化、蒸发以及固定床内部考虑热弥散效应的非等温模型等,采用22种组分、20步反应的简化化学反应机理,对ADN推力器内部复杂物理化学过程进行数值模拟,并获得热弥散对ADN推力器性能的影响规律。结果表明,计算结果与实验结果具有较好的一致性。催化床的热弥散效应对ADN推进剂的催化和燃烧过程中温度,以及反应物和重要中间产物的空间分布有着重要的影响,当考虑热弥散效应时,会导致燃烧温度较高。With a new type of non-toxic ammonium dinitramide(ADN)-based aerospace thruster as the research object,the numerical simulation of complex physico-chemical processes in ADN thruster were performed through establishing the hit network atomization model,evaporation model of ADN propellant and non-isothermal model with considering thermal dispersion effect in fixed bed using 22 kids of components and reduced chemical reaction mechanism of 20 step reactions.The influence rule of thermal dispersion on ADN thruster performances was obtained.The results show that the calculated results are in good agreement with the experimental ones.The thermal dispersion effect of catalytic bed has an important influence on the catalysis and combustion processes of ADN propellant and the temperature,reactant and spatial distribution of the important intermediate products.Considering the thermal dispersion effect leads to higher combustion temperature.

关 键 词：热弥散效应 二硝酰胺铵 ADN 推力器 催化床 数值模拟 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] V434.24[航空宇航科学与技术—航空宇航推进理论与工程]