Jet noise control using the dielectric barrier discharge plasma actuators

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作者：

VF Kopiev，VA Bityurin，IV Belyaev，SM Godin，MY Zaitsev，AI Klimov，VA Kopiev，IA Moralev，NN Ostrikov

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摘要：

We study experimentally how plasma actuators operating on the basis of surface barrier high-frequency discharge affect jet noise characteristics. The results of investigations of air jets (100–200 m/s) have demonstrated that the studied plasma actuators have control authority over the noise characteristics of these jets. An actuator's effect on the jet in the applied configuration is related to acoustic discharge excitation and to a large extent is similar to the well-known Vlasov-Ginevsky effect. It has been shown that jet excitation in the case of St 0.5 using the barrier-discharge plasma actuator leads to broadband amplification of jet sound radiation. The jet excitation in the case of St > 2 leads to broadband noise reduction if the action is sufficiently intensive.

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关键词：

Experimental/ acoustic noise actuators aeroacoustics discharges (electric) jets noise abatement plasma devices Vlasov equation/ jet noise control dielectric barrier discharge plasma actuator surface barrier high-frequency discharge jet noise characteristics air jets control authority acoustic discharge excitation Vlasov-Ginevsky effect jet excitation broadband amplification jet sound radiation broadband noise reduction/ A4350 Acoustic noise, its effects and control A4328 Aeroacoustics and atmospheric sound A4725M Noise (turbulence generated) A4755C Jets in fluid dynamics A5275 Plasma devices and applications A5280 Electric discharges