在一个正在发展的脉冲性等离子体射流中,二维的相互作用
Lei Dong1,2, Kwing-So Choi3, Yaxing Wang4
1School of Mechatronics Engineering, Beijing Institute of Technology, Beijing, 100081, China.
Scientific reports
|December 7, 2025
概括
介电屏障放电脉冲等离子驱动器产生渦对. 频率增加会导致跳跃,增强推力,但频率过高会导致合并和推力损失.
科学领域:
- 流体动力学 流体动力学
- 等离子体物理学的物理学
- 空气动力学 航空动力学
背景情况:
- 介电屏障放电 (DBD) 脉冲等离子驱动器产生二维旋对.
- 了解动力学对于流量控制和推力产生等应用至关重要.
研究的目的:
- 研究等离子体诱导的旋对转化为自由喷气的过程.
- 分析调制频率对互动和喷气行为的影响.
主要方法:
- 时间分辨率粒子图像速度计 (PIV) 用于流动可视化.
- 波形光谱分析用于详细的相互作用动态.
- 测量平均速度和流强度配置文件.
主要成果:
- 在低频率下,旋对形成一个自由喷气,相互作用最小.
- 增加的频率诱导了旋对的跳跃,维持了下游的推力.
- 高频率导致旋合并,导致喷气推力的损失.
结论:
- 互动的动态,包括跳跃和合并,强烈依赖于调制频率.
- 跳增强了等离子体诱导的推力,而合并则减少了它.
- 这项研究揭示了脉冲等离子体喷射中独特的2D相互作用机制.
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