摘要
在速度场和温度场测量的基础上,采用数值模拟方法研究了介质阻挡放电等离子体热效应对速度场的影响。分别利用二维粒子图像测速仪和红外热像仪得到了介质阻挡放电等离子体在静止空气中产生的速度场和温度场。通过实验中获得的速度场来验证数值模型的可靠性,而温度场则作为求解能量方程的边界条件。数值模拟结果表明,在无来流的情况下等离子体热效应对流场的影响比较明显,使局部水平方向速度大小提高近30%,但有来流时,由于对流换热使高温区减小,热效应对流场的影响减弱。
Numerical simulation method was used to investigate the thermal effect of the dielectric barrier discharge plasma on the flow field based on the flow field and temperature field measurements. Two dimensional particle image velocimetry was adopted to measure the flow field and infrared imager was adopted to measure the temperature field. The measured flow field was used to verify the numerical model and the measured temperature field was used as the boundary condition in solving the energy equation. Numerical simulation resuhsshow that the thermal effect of the plasma is significant in case of no coming flow and the local horizontal velocity is increased by as much as 30%. The thermal effect will be reduced with a coming flow, because heat convection tends to reduce the size of high temperature regions.
出处
《科技导报》
CAS
CSCD
2008年第8期40-44,共5页
Science & Technology Review
基金
国家自然科学基金项目(50676094)
中国科学院国防基础科研项目(AB20070090)
关键词
热效应
流动控制
等离子体
介质阻挡放电
thermal effect
flow control
plasma
dielectric barrierdischarge
