论热线风速仪在涡喷部件非定常流测量中的应用

THE APPLICATION OF HOT WIRE ANEMOMETER IN TURBOJET COMPONENTS UNSTEADY FLOW MEASUREMENT

热线风速仪在研究压气机失速、喘振和动叶尾迹发展过程的关系;燃烧室紊流场参数对燃油雾化、火焰传播速度、燃烧时间的影响等过程中是一种非常有用的工具。本文认为在涡喷部件试验中正确定量测量的关键在于很好掌握热线探针的校准特性及其影响因素,其中尤以温度修正、灰尘玷污及紊流度的影响等问题为最关键。

The hot wire anemometer is an useful instrumentation in unsteady flow measurement of turbojet components. The most important thing of correct application is to grasp the calibration of hot wire probes. The real time calibration method can be used to improve the measurement accuracy. One must take care for the influence of the temperature, dirt and turbulence of flow.