Activeflow co ntrol of S-duct by plasma synthhetic jet

Ru-bing LIU ,Xiao-yin MEI ,Sheng-hh uiXUE ,Yu-wen LUU ,Zhe-zhee SU ,QiLIN

1School of Aerospace Engineering,Xiamen University,Xiame n 361102,China

2Fujian Key Laboratory of Plasma and Magnetic Resonance Research,Xiamen 361102,China

S1 Definition of Cp, and

Table S1 Structural parameters of the plasma synthetic jet (PSJ)actuator

Fig.S1 Pressure-measurement section

S2 Discharge and flow-field characteristics of the plasma synthetic jet actuator

S2.1 Discharge characteristics

Fig.S2 Discharge curr ent and voltage waveforms of the Marx generator.Loading voltage U=155kV;discharge frequency f=250Hz;duty cycleτ=10%.

S2.2 Typical flow-field characteristics

Fig.S3. Shadowgraph imaages of the PSJ for different orifice diameters

Fig.S4 Time histories of jet front heights for different orifice diameters

Fig.S5 Time histories of jeet front speeds for different orifice diameters

Table S2 Average jet speed for different orifice diameters

Table S3 Four factors and their corresponding three levels in the orthogonal experiment method

Table S4 Orthogonal experiment table and experimental results

Fig.S6 Chordwise variation of the improvement in static pressure Cp

Fig..S7 Vorticity diagram at the duct outlet without and with PSJ actuator control

Fig.S8 Transverse velo city Uz chart in the outlet plane.(a) Without control,(b) With control

Fig.S9 Longitudinal velocity Vy chart in the outlet pl ane.(a) Without control,(b) With control

Fig.S10 Average total pressure recovery coefficiennt at the outlet ((a) without and (b) with the plasma jet actuator layout