南京理工大学学报（自然科学版）2011，Vol.35Issue(3)：359-364,6.
冲压增程炮弹补燃室内铝镁推进剂燃烧流场数值模拟
Numerical Simulation of Al/Mg Propellant Combustion Flow in Secondary Combustion Chamber for Ramjet Assisted Range Projectile
张磊 1周长省 1鞠玉涛 1胡志刚1
作者信息
- 1. 南京理工大学,机械工程学院,江苏南京210094
- 折叠
摘要
Abstract
To research the effects of Mg on the combustion in secondary combustion chamber,the Al/ Mg propellant combustion flow in secondary combustion chamber for the ramjet assisted range projectile is three-dimensionally and numerically simulated by using the probability density function (PDF) model and particle trajectory model. A1 particle combustion is controlled by a diffusionvaporization model. The turbulent model is a stand k-ε two-equation model. Considering the effects of Mg mass fraction and Al particles diameter, the trends of engine parameters such as resultant species and temperature are obtained. The results indicate that two diffusion flame peaks are at the entrance of secondary combustion chamber, and they are mixed into a diffusion flame peak in the middle of secondary combustion chamber. The combustion efficiency of Al particles increases from 15％ to 35％ when the Mg mass fraction increases from 0％ to 15％. With the same Mg mass fraction, the combustion efficiency of Al particles decreases with the increase of A1 particle diameters.关键词
冲压增程炮弹/补燃室/铝镁推进剂/流场/数值模拟Key words
ramjet assisted range projectiles/ secondary combustion chamber/ Al/Mg propellants/ flow/ numerical simulation分类
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张磊,周长省,鞠玉涛,胡志刚..冲压增程炮弹补燃室内铝镁推进剂燃烧流场数值模拟[J].南京理工大学学报（自然科学版）,2011,35(3):359-364,6.
