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首页> 外文期刊>Journal of Applied Physics >Energy deposition characteristics of nanosecond dielectric barrier discharge plasma actuators: Influence of dielectric material
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Energy deposition characteristics of nanosecond dielectric barrier discharge plasma actuators: Influence of dielectric material

机译：纳秒级电介质阻挡放电等离子体致动器的能量沉积特性：电介质材料的影响

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摘要

An experimental study aimed at the characterization of energy deposition of nanosecond Dielectric Barrier Discharge (ns-DBD) plasma actuators was carried out. Special attention was given on the effect of the thickness and material used for dielectric barrier. The selected materials for this study were polyimide film (Kapton), polyamide based nylon (PA2200), and silicone rubber. Schlieren measurements were carried out in quiescent air conditions in order to observe density gradients induced by energy deposited. Size of heated area was used to qualify the energy deposition coupled with electrical power measurements performed using the back-current shunt technique. Additionally, light intensity measurements showed a different nature of discharge based upon the material used for barrier, for a fixed thickness and frequency of discharge. Finally, a characterisation study was performed for the three tested materials. Dielectric constant, volume resistivity, and thermal conductivity were measured. Strong trends between the control parameters and the energy deposited into the fluid during the discharge were observed. Results indicate that efficiency of energy deposition mechanism relative to the thickness of the barrier strongly depends upon the material used for the dielectric barrier itself. In general, a high dielectric strength and a low volumetric resistivity are preferred for a barrier, together with a high heat capacitance and a low thermal conductivity coefficient in order to maximize the efficiency of the thermal energy deposition induced by an ns-DBD plasma actuator.
机译：进行了旨在表征纳秒介质阻挡放电（ns-DBD）等离子体致动器能量沉积特性的实验研究。对用于电介质阻挡层的厚度和材料的影响给予了特别关注。本研究选择的材料是聚酰亚胺薄膜（Kapton），聚酰胺基尼龙（PA2200）和硅橡胶。在静态空气条件下进行Schlieren测量，以观察由沉积的能量引起的密度梯度。使用加热区域的大小来验证能量沉积，并结合使用反向电流分流技术执行的电功率测量。另外，对于固定的厚度和频率的放电，光强度测量显示出基于用于阻挡层的材料的不同放电性质。最后，对三种测试材料进行了表征研究。测量介电常数，体积电阻率和热导率。观察到控制参数与放电期间沉积在流体中的能量之间的强烈趋势。结果表明，能量沉积机制相对于势垒厚度的效率在很大程度上取决于用于介电势垒本身的材料。通常，对于阻挡层，优选高介电强度和低体积电阻率，以及高热容和低热导率系数，以便使由ns-DBD等离子体致动器引起的热能沉积的效率最大化。

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  • 来源
    《Journal of Applied Physics》 |2015年第8期|083301.1-083301.13|共13页
  • 作者

    G. Correale; R. Winkel; M. Kotsonis;

  • 作者单位

    Department of Aerospace Engineering, Delft University of Technology, Kluyverweg 1,2629 HS Delft, The Netherlands;

    Department of Aerospace Engineering, Delft University of Technology, Kluyverweg 1,2629 HS Delft, The Netherlands;

    Department of Aerospace Engineering, Delft University of Technology, Kluyverweg 1,2629 HS Delft, The Netherlands;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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