摘要
通过提高PIV测量速度场的空间分辨率,得到了精细的等离子体诱导速度场,给出了物面附近等离子体诱导流场的速度型,通过微分形式的N-S方程和积分形式的动量方程分别求解了介质阻挡放电诱导的等离子体体积力,得到了体积力的空间分布,分析了载波频率对等离子体诱导体积力的影响规律。计算结果表明:对于所采用的电极布置方式,等离子体激励器的诱导流场沿射流方向的体积力强于垂直射流方向的体积力;峰峰电压为12kV时,在10～45kHz的载波频率范围内,随着载波频率的升高,体积力呈先增大后减小的趋势。
The study of dielectric-barrier-discharge（DBD）plasma actuation body force based on PIV technique aimed at low power flow control applications has been conducted.The total body forces obtained by both momentum balance equation and Navier-Stokes equation agree well with each other.Spatial distribution of body force actuated by DBD is also presented.A parametric study on body force is conducted for a wide range of carrier frequencies.It is shown that body force actuated by DBD in the direction parallel to wall is much larger than that in the direction perpendicular to wall,and body force increases to maximum magnitude and then decreases when carrier frequency changes from 10to 45kHz at the peak-peak voltage of 12kV.
出处
《实验流体力学》
CAS
CSCD
北大核心
2013年第4期45-49,共5页
Journal of Experiments in Fluid Mechanics
基金
高等学校博士学科点专项科研基金(SPFDP-200806990003)
西北工业大学基础研究(NPU-FFR-W018102)
