固体火箭技术2011，Vol.34Issue(1)：43-47,5.
PMMA在固体燃料冲压发动机中燃烧特性的数值模拟
Numerical simulation for combustion characteristic of PMMA in solid fuel ramjet
夏强 1武晓松 1陈志刚 2孙波1
作者信息
- 1. 南京理工大学,机械工程学院,南京,210094
- 2. 驻长治地区军事代表室,长治,046012
- 折叠
摘要
Abstract
In order to find the combustion characteristic of PMMA in solid fuel ramjet combustor, the numerical simulation was carried out. The combustion flow was described with RNG k-ε turbulent model, Eddy Dissipation turbulent combustion model and first order upwind scheme, then the flow field structure, temperature and species distribution in solid fuel ramjet combustor were analyzed. By comparing the numerical calculation results and abroad test data, the reliabilities of the CFD were verified. The results show that as the axial distance increases, the local regression rate increases at first then decreases gradually. In addition, the increase of inlet air temperature and inlet air mass flow rate induces the increase of mean regression rate of PMMA approximately exponential increase and the combustor temperature. Compared with test data, the calculated value of fuel regression rate was slightly larger,caused possibly by the result that effective gasification heat was regarded as a constant and the two step irreversible reactions.关键词
固体燃料冲压发动机/聚甲基丙烯酸甲酯/退移速率/数值模拟Key words
SFRJ/ PMMA/ regression rate/ numerical simulation分类
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夏强,武晓松,陈志刚,孙波..PMMA在固体燃料冲压发动机中燃烧特性的数值模拟[J].固体火箭技术,2011,34(1):43-47,5.
