首页|Experimental and numerical study on ignition and combustion characteristics of boron-magnesium composite powders

Experimental and numerical study on ignition and combustion characteristics of boron-magnesium composite powders

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A high-pressure laser ignition and combustion system with adjustable oxidizer gas atmosphere is established to investigate the ignition and combustion characteristics of boron-magnesium(BM)com-posite powders.An ignition and combustion model of BM powders is established and validated in the present study.The results show that increasing water content,O2 content and Mg content all result in shorter ignition delay time of BM powders,among which the effect of water content is the most obvious.However,ignition delay time increases as pressure increases.The combustion time decreases with increasing Mg content and ambient pressure but increases with water content.With the increase of O2 content,combustion time of BM powders first increases and then decreases,which means a critical O2 content exists above which combustion time decreases.The results show that there exists a trade-off between ignition and combustion performance of BM composite powders.

Boron magnesium powderLaser ignitionIgnition and combustion modelReaction mechanismNumerical model

Shuyuan Liu、Luyang Han、Hongmei Liu、Yingkai Song、Linlin Liu、Songqi Hu

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Science and Technology on Combustion,Internal Flow and Thermo-Structure Laboratory,Northwestern Polytechnical University,Xi'an,710072,China

School of Mechanical Engineering and Rail Transit,Changzhou University,Changzhou,213164,China

Shanghai Institute of Space Propulsion,Shanghai,201112,China

Shanghai Engineering Research Center of Space Engine,Shanghai,201112,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesKey Fundamental Strengthening ProjectKey Fundamental Strengthening ProjectFoundation of Key LaboratoryNatural Science Foundation of Jiangsu ProvinceNatural Science Foundation of Jiangsu Universities

522760875180604851776175D50002106022019-JCJQ-ZD-083-052021-JCJQ-JJ-04016142701190106BK2021085420KJB470009

2024

10.1016/j.partic.2023.02.012

颗粒学报(英文版)
中国颗粒学会　中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCD
影响因子：0.632
ISSN：1674-2001
年,卷(期)：2024.84(1)
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