Thermal and induced flow characteristics of radio frequency surface dielectric barrier discharge plasma actuation at atmospheric pressure

被引：0

作者：

王蔚龙 ^{[1
]}

李军 ^{[1
]}

宋慧敏 ^{[1
]}

金迪 ^{[1
]}

贾敏 ^{[1
]}

吴云 ^{[1
]}

机构：

[1] Science and Technology on Plasma Dynamics Laboratory,Air Force Engineering University

来源：

Chinese Physics B | 2017年 / 01期

基金：

中国国家自然科学基金;

关键词：

radio frequency discharge; temperature distribution; induced flow velocity; plasma aerodynamic actuation;

D O I：

暂无

中图分类号：

O53 [等离子体物理学]; O461 [气体放电（气体导电）];

学科分类号：

070204 ; 0809 ; 080901 ;

摘要：

Thermal and induced flow velocity characteristics of radio frequency(RF) surface dielectric barrier discharge(SDBD)plasma actuation are experimentally investigated in this paper. The spatial and temporal distributions of the dielectric surface temperature are measured with the infrared thermography at atmospheric pressure. In the spanwise direction, the highest dielectric surface temperature is acquired at the center of the high voltage electrode, while it reduces gradually along the chordwise direction. The maximum temperature of the dielectric surface raises rapidly once discharge begins.After several seconds(typically 100 s), the temperature reaches equilibrium among the actuator’s surface, plasma, and surrounding air. The maximum dielectric surface temperature is higher than that powered by an AC power supply in dozens of k Hz. Influences of the duty cycle and the input frequency on the thermal characteristics are analyzed. When the duty cycle increases, the maximum dielectric surface temperature increases linearly. However, the maximum dielectric surface temperature increases nonlinearly when the input frequency varies from 0.47 MHz to 1.61 MHz. The induced flow velocity of the RF SDBD actuator is 0.25 m/s.

引用

页码：324 / 329

页数：6