摘要
聚焦于表面介质阻挡纳秒脉冲放电（NS DBD）基本问题,设计不同结构激励器,研究放电能量特性、诱导流动特性.结果表明：单位展长激励器单次放电能量随激励电压增大而非线性增大,其值在0.1~1 m J/cm量级,与激励器长度和激励频率无关;NS DBD瞬时功率可达几百千瓦,而时均功率较低,仅为瓦量级.NS DBD诱导流动的速度较低,在0.1 m/s量级上;提升激励电压对诱导速度提升不明显;随激励频率增大有所增大.NS DBD可诱导形成冲击波,其初始运动速度稍高于音速,不同结构激励器诱导冲击波在传播位置上无明显差别,主要影响诱导冲击波个数;激励电压对冲击波传播速度无明显影响;唯象学仿真表明不同沉积能量诱导冲击波速度不同,实验对应下的沉积能量诱导冲击波波速近于音速.
Focusing on the basic issues of nanosecond pulse dielectric barrier discharge（NS DBD）, different actuators are used to investigate the electrical properties, induced flows and shock wave by NS DBD. The results indicate that the coupled energy per unit length is basically controlled by the peak voltage and is nearly independent of the actuator length and the pulse frequency. The peak powers can up to several hundred k W, while the average power for the NS DBD is slightly low, on the orders of W. The very small induced flow velocity of NS DBD is on the order of 0.1 m/s. The compression waves are observed after discharge, initially spread faster than the speed of sound. Phenomenological simulation validates that deposited energy at different levels can bring shock wave propagates at different speed. Deposited energy corresponding to the experiment induces compression wave that propagates close to the speed of sound.
出处
《中国科学：技术科学》
EI
CSCD
北大核心
2015年第11期1195-1206,共12页
Scientia Sinica(Technologica)
基金
国家自然科学基金(批准号:51336011
51276197
51207169)资助项目
关键词
等离子体
纳秒脉冲
冲击波
介质阻挡放电
诱导流动
plasma actuation
nanosecond pulse
shock wave
dielectric barrier discharge
induced flow
作者简介
E—mail：zym19860615@163．com
