等离子体气动激励扩大低速轴流式压气机稳定性的实验

在低速轴流式压气机孤立转子实验台上进行了等离子体气动激励扩大压气机稳定性的实验研究.研制了等离子体气动激励处理机匣,通过比较一定转速下施加等离子体气动激励前后的压升系数和流量系数,研究压气机稳定性的变化.施加等离子体气动激励后,转速为900 r/min和1 080 r/min时,压气机近失速流量系数分别降低5.2%和5.07%.等离子体气动激励电压增大后,扩稳效果更好.在距离转子叶片前缘49.5%弦长处施加等离子体气动激励,扩稳效果更好.

Experimental investigation of using plasma aerodynamic actuation to extend low-speed axial compressor's stability

The effect of plasma aerodynamic actuation on low-speed axial compressor performance and stability range was investigated experimentally.A plasma aerodynamic actuation treated casing(PAATCTM) was designed.A single low-speed axial compressor rotor with no inlet guide vanes was tested.Pressure rise coefficient and flow coefficient for the compressor test rig were calculated with/without plasma actuation at a constant rotor speed to represent compressor performance and stability range.The experimental results show that,with plasma actuation,the mass flow coefficients near stall is decreased by 5.2% and 5.07% when the rotor speed reaches 900 r/min and 1 080 r/min respectively.The influences of different actuation voltages and different actuation locations were investigated experimentally.Compressor's stability became larger along with the rise of actuation voltage.The actuation away from rotor's leading edge for 49.5% axial chord can extend compressor's stability more than the actuation away from the rotor's leading edge for 8.3% axial chord.