摘要
基于FLUENT软件提供的计算方法和物理模型,利用动网格技术及用户自定义函数(User-define Function,UDF),对发动机预燃室调节阀的自反馈调节过程进行动态数值模拟,并分析阻尼参数对调节效果的影响。结果表明:自反馈机构可实现对不同压力扰动的及时响应,具有稳定流量的效果,改变阻尼参数可对调节响应速度和流量稳定性进行优化,其中摩擦力对调节影响最显著。
Based on the calculation and physical models of FLUENT software,the feedback control process of preburner regulating valve in rocket engine and the effect of damping parameter on regulation is simulated by using dynamic mesh and UDF(user-define function).The result shows that:the feedback control element can timely response to different pressure disturbances,and it can stabilize flowrate.Regulating response time and flowrate stabilization effect can be optimized by changing damping parameters,and friction has the most significant effect in the regulating process.
作者
刘畅
郑孟伟
郭文君
Liu Chang;Zheng Meng-wei;Guo Wen-jun(Beijing Aerospace Propulsion Institute,Beijing,100076)
出处
《导弹与航天运载技术》
CSCD
北大核心
2020年第1期54-59,共6页
Missiles and Space Vehicles
关键词
火箭发动机
动网格
UDF
调节阀
流场仿真
rocket engine
dynamic mesh
user-define function
regulating valve
flow field simulation
