摘要
针对固体火箭发动机地面试验排出的高温燃气产生的隐蔽性差及热污染问题,提出通过在扩张段安装喷水支板的方法,利用液态水相变吸热使燃气温度下降,达到隐蔽试验目的的同时减少热污染。采用SST K-Omega、DPM、组分输运等模型对固体火箭发动机地面点火试验进行流场仿真,对比和分析了喷水前后的流场图及喷水角度对出口温度的影响。计算结果表明,喷水冷却能有效降低出口温度。在讨论的几个喷水角度中,垂直喷水的冷却效果最好。
In the ground firing test of solid rocket engine,concealment and thermal pollution problems caused by hot gas discharged from Laval nozzle.In order to prevent tests from being detected,it is suggested that water spray can be used to reduce gas temperature.In this paper, the flow field simulation of solid rocket engine ground firing test is carried out by using SST K-Omega, DPM, component transport and other models. The flow field contours with and without spraying water and the influence of various angles on outlet temperature were compared and analyzed. The results show that spray cooling can effectively reduce the outlet temperature. Among the several water spray angles discussed, the vertical angle has the best cooling effect.
作者
熊云
左红星
李广武
李超
XIONG Yun;ZUO Hongxing;LI Guangwu;LI Chao(Xi’an Aerospace Propulsion Testing Technology Research Institute,Xi’an 710025,China)
出处
《弹箭与制导学报》
北大核心
2020年第5期81-86,共6页
Journal of Projectiles,Rockets,Missiles and Guidance
作者简介
第一作者:熊云(1995-),男,福建龙岩人,硕士研究生,研究方向:固体火箭发动机地面试验仿真。
