A large-scale multiple dielectric barrier discharge actuator based on an innovative three-electrode design
A large-scale multiple dielectric barrier discharge actuator based on an innovative three-electrode design
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DOI：
10.1088/0022-3727/42/23/235204
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发表时间：
2009-12
期刊：
影响因子：
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通讯作者：
N. Benard;A. Mizuno;E. Moreau
中科院分区：
文献类型：
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作者：
N. Benard;A. Mizuno;E. Moreau
近10年来，表面介质阻挡放电（DBD）作为等离子体激励器在亚音速气流控制中得到了广泛的应用。然而，单表面DBD的延伸长度被限制为约2cm，这可能限制其用于小规模应用。延伸等离子体致动表面的一种方式包括使用串联的几个单表面DBD，由零相位延迟或相移高电压激励。然而，连续放电之间的相互作用影响了这种标准多DBD致动器的益处。本文论述了一种新的设计电极的大规模流量控制应用。它包括用三电极DBD代替每个单个两电极DBD，其中第三电极用作两个连续DBD之间的屏蔽。激光多普勒测速仪，压力探头和时间分辨粒子图像测速仪的实验测量结果表明，相互作用可以大大减少，从而在一个恒定的电风速以上的多DBD致动器。
For about 10 years, surface dielectric barrier discharges (DBDs) have been widely used as plasma actuators in subsonic airflow control applications. However, the extension length of a single surface DBD is limited to about 2 cm, which could restrict its use to small-scale applications. One way to extend the plasma actuation surface consists of using several single surface DBDs in series, energized by zero phase delayed or phase shifted high voltages. However, the mutual interaction between successive discharges affects the benefits of such standard multi-DBD actuators. This paper deals with a new design electrode for large-scale flow control applications. It consists of replacing each single two-electrode DBD by a three-electrode DBD where the third electrode acts as a shield between two successive DBDs. Experimental measurements by laser doppler velocimetry, pressure probe and time-resolved particle image velocimetry show that the mutual interactions can be strongly reduced, resulting in a constant electric wind velocity above the multi-DBD actuator.