摘要
根据已有粉末燃料冲压发动机的特点,设计了驻涡火焰稳定器,并对现有发动机结构进行了改进,提出了驻涡火焰稳定器式粉末燃料冲压发动机。采用颗粒轨道模型,对镁基粉末燃料冲压发动机进行了三维流场数值模拟,对比分析了改进前后发动机内流场结构对该发动机燃烧效率的影响,以便为进一步的实验研究提供指导。数值模拟结果表明,驻涡火焰稳定器的应用,可使燃烧效率较现有发动机提高10%。
A trapped vortex flame holder was designed for the powdered fuel ramjet, and the configration of trapped vortex flame holder-based powdered fuel ramjet was put forward. The 3D two-phase flow field in the magnesium powdered fuel ramjet was numeri- cally simmulated by the particle trajectory model. The effects of the ramjet internal flow field on the combustion efficiency was cont- rastively analyzed between the two configrations, so as to provide references for the further experimental investigation. The results show that the ramjet combustion efficiency is improved by 10% with the application of trapped vortex flame holder.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2013年第1期32-36,共5页
Journal of Solid Rocket Technology
基金
航空科学基金(20080188)
关键词
粉末燃料
冲压发动机
驻涡火焰稳定器
数值模拟
镁颗粒燃烧
powdered fuel ramjet
trapped vortex flame holder
numerical simulation
magnesium particle combustion
