航天推进技术研究院主办
减压阀节流口流场仿真和分析
- 分类号:
- V434
- 文献标志码:
- A
- 摘要:
- 采用Fluent软件对火箭姿态控制系统减压阀环形节流口流场进行了数值仿真,得到了流场有关参数图形。减压阀节流口气体流场为非自由、紊动、冲击、壁面射流,气体在节流口达到音速,贴壁面高速射流出去后,相互撞击、压缩并撞击阀芯柱面产生激波,气流总压损失较大,建议采用等温过程进行特性计算。减压阀环形节流口后流场存在激波,总压并不守恒,目前通用的气流稳态流动力计算公式并不合适,应借助流场分析工具进行节流元件受力分析。
- Abstract:
- Numerical simulation of flow field through an attitude control system regulator orifice is conducted with FLUENT. Transformation of flow field parameters shows that the flow is restricted,turbulent,impact flow against the wall. The gas flow is pressed against the wall and is rapidly shot out with sonic velocity. There produces shock wave in the compressed flow. Formula for isothermal flow is recommended for great total lose. Because of the existing of shock wave,total pressure varies with gas flowing through regulator orifice. Kinetic equations for steady flow can not be used to explain this process and CFD software is used to analyze this complex turbulent flow field.
相似文献/References:
[1]宋会玲,张 萍,曾维亮.大推力姿控发动机推进剂控制阀流场分析[J].火箭推进,2013,39(06):19.
SONG Hui-ling,ZHANG Ping,ZENG Wei-liang.Flow field analysis on propellant control valve of high thrust attitude control system[J].Journal of Rocket Propulsion,2013,39(06):19.
[2]王定军,宋会玲,刘伟.冷气推进器流场仿真和分析[J].火箭推进,2010,36(02):36.
Wang Dingjun,Song Huiling,Liu Wei.Simulation and research of the nitrogen thruster flow field[J].Journal of Rocket Propulsion,2010,36(06):36.
[3]王定军,王新建,方吉汉,等.姿态控制系统安全阀排放研究[J].火箭推进,2008,34(03):31.
Wang Dingjun,Wang Xinjian,Fang Jihan,et al.Study on the safety valve of an attitude control system[J].Journal of Rocket Propulsion,2008,34(06):31.
备注/Memo
收稿日期:2009-07-07;修回日期:2009-07-24。
作者简介: 王定军(1977—),男,硕士,研究领域为火箭姿态控制系统。