文献类型：期刊文献

英文题名：Study on combustion characteristics of boron particles under flame interaction

作者：Li, Junjie[1];Hu, Chunbo[1];Hu, Shaoqing[3];Ma, Kai[3];Yang, Jiangang[3];Hu, Xu[4];Li, Chao[2]

机构：[1]Northwestern Polytech Univ, Internal Flow & Thermo Struct Lab, Sci & Technol Combust, Xian 710072, Shaanxi, Peoples R China;[2]Northwestern Polytech Univ, Unmanned Syst Res Inst, Xian 710072, Shaanxi, Peoples R China;[3]Xian Mordern Chem Res Inst, Xian 710065, Peoples R China;[4]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2023

卷号：208

起止页码：311

外文期刊名：ACTA ASTRONAUTICA

收录：;EI(收录号：20231713952198);WOS:【SCI-EXPANDED(收录号:WOS:000989374600001)】；

基金：This work was supported by National Natural Science Foundation of China (No. 51876178 and No.52006169), Shanghai Sailing Program (No. 21YF140800) and the Open, cooperate and innovate fund' of Xi'an Modern Chemistry Research Institute (No. SYJJ20210403).

语种：英文

外文关键词：Boron particles; Combustion characteristics; Flame structure; Combustion rate; Numerical simulation

摘要：The combustion characteristics of the multiple boron particles with flame interaction are studied systemically. The governing equations with detailed chemical kinetics, condensation of B2O3 and species transportation under different particle distance, size, ambient pressure and arrangement structure are simulated by means of laminar model. The simulation results show that the main heterogeneous reaction is 2B(s)+O2--B2O2, and the main homogeneous reactions are BO + O2--BO2+O and B2O2+O--BO + BO2. The highest temperature appears at the particle surface and is mainly controlled by the heterogeneous reaction. The flame structure exhibits spherical shape. Under the conditions of particle spacing of 0.02 mu m, 0.03 mu m, 0.05 mu m, 0.1 mu m, 0.25 mu m and 0.5 mu m, no obvious increasing on the total heterogeneous reaction rate in the interaction zone occurs when the particle distance reaches more than or equal to 0.25 mu m. When the spacing is less than or equal to 0.1 mu m, the total heterogeneous reaction rate in the interaction zone increases significantly with the reduction of particle spacing. Increasing particle size can promote the temperature and particle combustion rate in the interaction zone. Higher ambient pressure increases the flame temperature. In multiple particle system, the combustion characteristics is similar to that in double particle system.