某型发动机空气流量计算影响因素研究

Study on the Factors Affecting Airflow Calculation of an Aero-engine

本文采用不同方式计算了若干条件下某型发动机特定状态的空气流量,重点讨论了内圈总静压径向不均匀性、总静压周向不均匀性、最外转静压作为气动界面平均静压和近壁面流动对空气流量计算结果的影响,获得了有价值的结果修正数据,对气动界面的总静压测点布局和空气流量的准确计算具有一定的工程指导意义。

The airflow of an aero-engine at some flight conditions is calculated with three different meth-ods.The factors affecting airflow calculation results are discussed such as radial ununiformity of inner total pressure and static pressure,circumferential ununiformity of total pressure and static pressure,taking out-er static pressures as average pressure of aerodynamic interface plane（AIP） and boundary layer flow.The valuable modified data has gotten through calculation.The study plays an important role in airflow calcu-lation and total pressures and static pressures station array at AIP.