Overall, a jet frequency of 0.5292 increases the moment coefficient
of the model, while jet frequencies of 1.0583 and 2.1133 decrease
the moment coefficients. Additionally, when the jet frequency is
1.0583, the pitching moment turning point of the model is in-
creased from 10◦ to 12◦. When the angle of attack is 12◦, the
jet frequency 0.5292 increases the moment coefficient by 8.86%,
while the jet frequency 1.0583 decreases the moment coefficient
by 14.3%.
This shows that the jet frequency has a significant influence
on the flow control efficiency. An appropriate selection of jet fre-
quencies can not only increase the slope reversal angle of pitching
moment, but can also achieve an increase or decrease of moment
coefficient, thus achieving the goal of controlling the model pitch-
ing.
Fig. 16 shows a spanwise comparison of the time-averaged
pressure coefficient distribution of model at typical locations un-
der different jet frequencies. It is found that the disturbance ef-
fect of jet frequency 0.5292 is weak, and as the jet frequency
increases, both the negative pressure area and the strength on
the upper surface of the jet location increase, however the dif-
ferences in pressure distribution corresponding to jet frequencies
1.0583 and 2.1166 is not obvious. This shows that the selection
of jet frequency has an effective area. Fig. 17 further compares
Overall, a jet frequency of 0.5292 increases the moment coefficientof the model, while jet frequencies of 1.0583 and 2.1133 decreasethe moment coefficients. Additionally, when the jet frequency is1.0583, the pitching moment turning point of the model is in-creased from 10◦ to 12◦. When the angle of attack is 12◦, thejet frequency 0.5292 increases the moment coefficient by 8.86%,while the jet frequency 1.0583 decreases the moment coefficientby 14.3%.This shows that the jet frequency has a significant influenceon the flow control efficiency. An appropriate selection of jet fre-quencies can not only increase the slope reversal angle of pitchingmoment, but can also achieve an increase or decrease of momentcoefficient, thus achieving the goal of controlling the model pitch-ing.Fig. 16 shows a spanwise comparison of the time-averagedpressure coefficient distribution of model at typical locations un-der different jet frequencies. It is found that the disturbance ef-fect of jet frequency 0.5292 is weak, and as the jet frequencyincreases, both the negative pressure area and the strength onthe upper surface of the jet location increase, however the dif-ferences in pressure distribution corresponding to jet frequencies1.0583 and 2.1166 is not obvious. This shows that the selectionof jet frequency has an effective area. Fig. 17 further compares
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