用动态三孔针测旋转失速流场

为了测量不稳定流场参数,因此要求三孔针具有高频动态响应能力,为了在全台发动机中使用,要求其适用恶劣环境。 1.结构 如图1示,三个高频响应的微型固阻式压力传感器装入探针之内,用橡皮套管与测压孔连接,缩短了测压管长,因而具有

EXPERIMENTAL STUDY OF ROTATING STALL IN SINGLE-STAGE AXIAL COMPRESSOR

A three-hole dynamic probe is reported in this paper which can measure the unsteady flow direction, flow velocity, total and static pressures of a 2-D flow field. Three miniature pressure transducers are mounted in the prode to detect the pressure fluctuation of the unsteaey flow. The dynamic pressure signals are recorded with a digital data acquisition system controlled by an microcomputer. The flowfield in rotaing stall regime of a singl-stage axial compressor can be studied by means of this probe and the system. The distributions of the flow velocity, flow direction, the total and static pressures in the rotating stall cells have been obtained in detail.