ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Numerical Simulation of Nanosecond Pulsed Plasma Actuator for Cylindrical High-speed Flow Control
Received date: 2013-04-27
Revised date: 2013-11-05
Online published: 2013-11-26
A computational study is performed for nanosecond-pulse dielectric barrier discharge (NS-DBD) plasma actuator using for cylindrical high-speed flow control. First, the flow field characteristic of a single NS-DBD plasma actuator in quiescent air is studied. The result shows that in the region of dielectric barrier discharge, there is a rapid injection of energy. At 5 μs after the discharge, a hot spot is formed at the downstream edge of the upper electrode. The maxima temperature of the hot spot reaches up to 900 K. The fast heating effect will result in a strong pressure perturbation and form an asymmetric perturbation wave spreading at the speed of sound. On this basis, the numerical simulation of NS-DBD plasma actuator disposed on the cylinder in the free stream Ma∞ = 4.6 is presented in this paper. Studies have shown that as the compression wave travels upstream, it interacts with the bow-shock and momentarily increases the bow-shock standing distance and weakens the shock strength, thus resulting in a drag decrease by as much as 13%.
NI Fangyuan , SHI Zhiwei , DU Hai . Numerical Simulation of Nanosecond Pulsed Plasma Actuator for Cylindrical High-speed Flow Control[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014 , 35(3) : 657 -665 . DOI: 10.7527/S1000-6893.2013.0451
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