特型燃气喷口对补燃室掺混燃烧的影响  

Effects of Special Fuel-gas Jet on Mixing and Combustion in Afterburning Chamber

作　　者：王同辉[1] 白涛涛[1] 莫展[1] 单睿子[1] 曹军伟[1] 

机构地区：[1]中国空空导弹研究院,河南洛阳471009

出　　处：《弹箭与制导学报》2015年第2期97-100,共4页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：采用N-S方程、k-ε双方程和非预混燃烧简化PDF模型,对3种特型燃气喷口结构的固冲发动机补燃室掺混燃烧流场进行了数值研究。分析3种特型燃气喷口对补燃室中掺混燃烧的影响,并与常规型燃气喷口的仿真结果进行了对比分析。结果表明:特型燃气喷口可以有效增强补燃室中燃气与空气的掺混效果,提高燃气的完全燃烧程度,提升固冲发动机补燃室的特征速度;2#和3#特型喷口的补燃室掺混燃烧效果要比1#特型喷口更好,但是会带来更大的总压损失。Based on the N-S equation, k-ε turbulence models and no-premixed combustion simplified PDF models, numerical studies on the mixing and combustion of fuel-gas and air in the afterburning chamber of solid rocket ramjet were carried out fewer than three special fu-el-gas jets structures. The effects of the three special fuel-gas jets were analyzed and compared with simulation results of standard fuel-gas jets. The results show that, the mixing efficiency, full combustion extent and characteristic velocity in the afterburning chamber of solid rocket ramjet promoted when using special fuel-gas jets;mixing and combustion effects of 2# and 3# special fuel-gas jets better than that of 1# special fuel-gas jet, but they would bring more total pressure loss.

关 键 词：固体火箭冲压发动机 补燃室 掺混燃烧 特型燃气喷口 特征速度 

分 类 号：V438[航空宇航科学与技术—航空宇航推进理论与工程]