Three Flow Features behind the Flow Control Authority of DBD Plasma Actuator: Result of High-Fidelity Simulations and the Related Experiments
Three Flow Features behind the Flow Control Authority of DBD Plasma Actuator: Result of High-Fidelity Simulations and the Related Experiments
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DBD等离子体执行器流量控制权限背后的三个流动特征：高保真模拟和相关实验的结果
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
K. Fujii
中科院分区：
文献类型：
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作者：
K. Fujii
为了解介质阻挡放电（DBD）等离子体激励器的流动分离控制机理，进行了计算和实验研究。翼型上的低速流动被认为是。在翼型前缘附近安装了一个DBD等离子体激励器，并讨论了这种小型激励器的流动控制机理。在雷诺数为6.3 × 104时，DBD等离子体激励器，特别是在爆发模式下，对控制大于失速迎角的流动分离是非常有效的。分析表明，流动结构包括三个显着的特点，提供了良好的权威与适当的致动器参数的流动分离控制。通过适当地设置致动器参数以增强应用的有效流动特征，可以实现良好的流动控制。在此基础上，提出了有效使用DBD等离子体激励器的指导原则。DBD等离子体激励器也适用于巡航条件下的流动。与DBD等离子体致动器连接，一个简单的翼型原来显示出更高的升阻比比一个精心设计的翼型。
Both computational and experimental studies are conducted for understanding of the flow separation control mechanism of a DBD (dielectric barrier discharge) plasma actuator. Low speed flows over an airfoil are considered. A DBD plasma actuator is attached near the leading edge of an airfoil and the mechanism of flow control of this small device is discussed. The DBD plasma actuator, especially in burst mode, is shown to be very effective for controlling flow separation at Reynolds number of 6.3 × 104, when applied to the flows at an angle of attack higher than the stall. The analysis reveals that the flow structure includes three remarkable features that provide good authority for flow separation control with the appropriate actuator parameters. With proper setting of the actuator parameters to enhance the effective flow features for the application, good flow control can be achieved. Based on the analysis, guidelines for the effective use of DBD plasma actuators are proposed. A DBD plasma actuator is also applied to the flows under cruise conditions. With the DBD plasma actuator attached, a simple airfoil turns out to show higher lift-to-drag ratio than a well-designed airfoil.
DOI：
10.1088/0022-3727/46/5/055202
发表时间：
2013-01
期刊：
Journal of Physics D: Applied Physics
影响因子：
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作者：
J. Kriegseis;C. Schwarz;C. Tropea;S. Grundmann
通讯作者：
J. Kriegseis;C. Schwarz;C. Tropea;S. Grundmann