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Performance improvement and start-up characteristics of a cyclorotor using multiple plasma actuators
Meccanica ( IF 1.9 ) Pub Date : 2021-08-06 , DOI: 10.1007/s11012-021-01413-4
Amine Benmoussa 1 , José Carlos Páscoa 1
Affiliation  

In the operation of cycloidal rotors the flow structure deformation, and associated curvature, limits the possibility of achieving an optimum working point. In this study, first, we started by performing a detailed analysis of the start-up characteristics of a cycloidal rotor in order to identify the evolution of kinematic and dynamic characteristics of its operation. Afterwards, we identified the effects of applying multiple plasma boundary layer control, of dielectric barrier discharge type. This application is defined in both sides of the blades, since in cyclorotor movement they change from pressure to suction side over one blade rotation. A control law is defined to regulate the operation of the plasma actuators as the rotor blade move in azimuthal direction. The coupled multiphysics simulation of the cyclorotor and plasma flow is performed by adding to Fluent two user define functions to model the complex cyclorotor movement and the plasma momentum effect. The k-\(\omega \) SST turbulence model is used in the computations. The study is performed for a cyclorotor comprised of six NACA 0016 blade profiles that rotate at 200 rpm. The results demonstrate the advantage of using multiple plasma actuators in order to control the blade flow field. In particular, the configuration with six actuators, three in each side, was the most effective, by improving the thrust by 2.3%, as compared to the base case, and achieving a reduction in power requirements of 0.9%.



中文翻译:

使用多个等离子体致动器的旋转转子的性能改进和启动特性

在摆线转子的运行中,流动结构变形和相关曲率限制了实现最佳工作点的可能性。在这项研究中,首先,我们首先对摆线转子的启动特性进行了详细分析,以确定其运行的运动学和动力学特性的演变。之后,我们确定了应用介质阻挡放电类型的多等离子体边界层控制的效果。这种应用定义在叶片的两侧,因为在旋转转子运动中,它们在叶片旋转一圈时从压力侧变为吸力侧。当转子叶片在方位角方向移动时,控制律被定义为调节等离子体致动器的操作。通过向 Fluent 添加两个用户定义函数来模拟复杂的旋转转子运动和等离子体动量效应,可以执行旋转转子和等离子体流的耦合多物理场仿真。这k - \(\omega \) SST 湍流模型用于计算。该研究是针对由六个 NACA 0016 叶片轮廓组成的旋转转子进行的,这些叶片以 200 rpm 的速度旋转。结果证明了使用多个等离子体致动器来控制叶片流场的优势。特别是,与基本情况相比,具有 6 个执行器(每侧 3 个)的配置是最有效的,与基本情况相比,推力提高了 2.3%,并实现了 0.9% 的功率需求降低。

更新日期:2021-08-10
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