摘要
为分析旋转孔的流动特性,提高空气系统一维仿真计算效率,综合考虑入射角、几何参数等主要影响因素,建立了旋转孔流动特性计算模型,并利用MATLAB/Simulink软件搭建其仿真模型。通过试验结果和商业软件Flowmaster对该模型进行验证,结果表明:该模型计算结果与试验结果误差在7.2%内,与CFD数值计算结果的最大误差不超过2.3%,而Flowmaster计算结果与试验结果最大误差达到8.94%。旋转孔模型计算结果准确度高,适用于不同类型轴向孔的模拟。
In order to analyze the flow characteristics of rotating orifice,and improve the efficiency of air system one-dimensional simulation,the computational model of rotating orifice was developed considering the main factors,such as,incidence angle,geometric parameters. The simulation model was constructed based on MATLAB/Simulink. The model was verified by experimental data and commercial software Flowmaster. The results show that error between the model and experimental results is within 7.2%,and error between the model and CFD results does not exceed 2.3%. However,error between the model and Flowmaster results is close to8.94%. The results show that model of rotating orifice has high precision,and can be applied to simulate different type of axial orifices,which is of great significance for air system one-dimensional simulation.
出处
《推进技术》
EI
CAS
CSCD
北大核心
2015年第8期1215-1221,共7页
Journal of Propulsion Technology
关键词
空气系统
旋转孔
入射角
流量系数
Air system
Rotating orifice
Incidence angle
Discharge coefficient
