Abstract:
The effects of actuation frequency and actuation voltage generated by nanosecond pulse dielectric barrier discharge plasma on the flow control effects of a delta wing are investigated with different wind speeds by means of force-balance tests in the wind tunnel, the plasma actuator is installed on the delta wing. The force test results show that, actuation frequency and actuation voltage determines flow control effectivity, when the actuation frequency is 200Hz and actuation voltage 13kV, nanosecond pulse dielectric barrier discharge plasma inhibits the leading-edge vortices separation obviously, and the flow control effect may achieves the best. For the case of wind speed of 30m/s, the maximum lift coefficient increases 9.8% from 1.32 to 1.45, the maximum lift-drag ratio increases 2.9%. For wind speed of 45 m/s, the maximum lift coefficient increases up to 11.2% from 1.30 to 1.45, and the maximum lift-drag ratio 0.64%