Abstract: 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 to 8.94%. 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.

Key words: Air system；Rotating orifice；Incidence angle；Discharge coefficient

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。

关键词: 空气系统；旋转孔；入射角；流量系数