高性能等离子体合成射流激励器研究
详细信息 查看官网全文
- 英文论文题名：Investigation on high performance of the plasma synthetic jet actuator
- 论文作者：张志波 ; 吴云
- 英文论文作者：Zhang Zhibo ; Wu Yun ; Science and Technology on Plasma Dynamics Laboratory ; Air Force Engineering University
- 年：2016
- 作者机构：空军工程大学等离子体动力学重点实验室;
- 论文关键词：流动控制 ; 等离子体激励器 ; 合成射流 ; 放电技术
- 英文论文关键词：Flow control ; plasam actuator ; synthetic jet ; discharge technology
- 会议召开时间：2016-11-25
- 会议录名称：2016年航空科学与技术全国博士生学术论坛摘要集
- 语种：中文
- 分类号：O539;O358
- 学会代码：XBHH
- 会议名称：2016年航空科学与技术全国博士生学术论坛
- 会议地点：中国陕西西安
- 主办单位：西北工业大学研究生院、中国高校航空学院院长联席会
- 学会名称：西北工业大学航空学院
- 页数：2
- 文件大小：571k
- 原文格式：D
- 会议级别：全国
摘要
与传统DBD等离子体激励器相比,等离子体合成射流激励器能够产生高速脉冲射流,能够作用于DBD难以发挥作用的高速流动控制。但是,由于一个电源只能驱动一个激励器工作,导致激励器效率不高、影响区域较小。为解决这些问题,本文提出了一种新概念的单电源驱动的多路放电等离子体合成射流激励器。该激励器有两种工作模式,单腔多电极激励器和阵列式两电极激励器。基于高速纹影显示系统,对这两种模式的激励器进行了实验研究。在同样的输入电压与能量条件下,与两电极激励器相比,以11电极为特征的多电极激励器能提高放电效率200%,射流速度47%。12个两电极激励器组成的阵列式合成射流激励器可提高射流影响区域6倍,但射流速度仅仅减小36%。为进一步挖掘多路放电潜力,建立了多路放电分析模型,从原理上分析该电路特点。实验与仿真得到的电流电压波形验证了模型的准确性。利用该分析模型,研究了电路中主要参数对放电通道数的影响规律。基于新的认识,对原有电路进行了优化改进。最终,在输入电压6kV的情况下实现了31个通道放电,而每个通道击穿电压都大于3kV。相比传统激励器,改进的高性能等离子体合成射流激励器效率高、影响区域大,更具有实际应用前景。
Compared with DBD actuator, the plasma synthetic jet actuator(PSJA) is a flow control device capable of generating high speed pulsed jet. This characteristics enable its application in high speed flow control field. However its performance is affected by low discharge efficiency and small control area as one power supply only drives one electrode couple. The present work is thus to propose the new concept of multichannel discharge PSJA using single-power driven multi-electrode PSJA or using single-power driven multi-PSJA array, respectively. The two types of multichannel discharge PSJA are examined experimentally. The multi-electrode PSJA featuring 11-electrode PSJA is first studied. Comparison with standard 2-electrode PSJA reveals that the discharge efficiency and jet velocity increase 200% and 47% respectively under the same input energy and discharge voltage. The multi-PSJA array is later evaluated. Single power supply is found to be able to drive an array of 12 PSJAs, resulting in 6 times affected area and 64% jet velocity of a traditional PSJA. To improve the performance of the multichannel discharge technology, a novel analytic model of the multichannel discharge circuit is put forward. Based on this model, the characteristics of the multichannel discharge circuit are investigated. The good agreament between the experimental and the simulated results validated the accuracy of this model. Based on this model, the influence of the circuit parameters on the maximum discharge channel number(MDCN) is investigated. Based on these influence rules, to shorten the discharge time, a modified multichannel discharge circuit is developed and validated by the experiment. With only 6 KV input voltage, 31 channels discharge is achieved. The breakdown voltage of each electrode gap is larger than 3 KV. Comapred with traditional PSJA, the multichannel discharge circuit has higher efficiency and larger affected aera. As a reuslt, it is more feasible in practical application.
Compared with DBD actuator, the plasma synthetic jet actuator(PSJA) is a flow control device capable of generating high speed pulsed jet. This characteristics enable its application in high speed flow control field. However its performance is affected by low discharge efficiency and small control area as one power supply only drives one electrode couple. The present work is thus to propose the new concept of multichannel discharge PSJA using single-power driven multi-electrode PSJA or using single-power driven multi-PSJA array, respectively. The two types of multichannel discharge PSJA are examined experimentally. The multi-electrode PSJA featuring 11-electrode PSJA is first studied. Comparison with standard 2-electrode PSJA reveals that the discharge efficiency and jet velocity increase 200% and 47% respectively under the same input energy and discharge voltage. The multi-PSJA array is later evaluated. Single power supply is found to be able to drive an array of 12 PSJAs, resulting in 6 times affected area and 64% jet velocity of a traditional PSJA. To improve the performance of the multichannel discharge technology, a novel analytic model of the multichannel discharge circuit is put forward. Based on this model, the characteristics of the multichannel discharge circuit are investigated. The good agreament between the experimental and the simulated results validated the accuracy of this model. Based on this model, the influence of the circuit parameters on the maximum discharge channel number(MDCN) is investigated. Based on these influence rules, to shorten the discharge time, a modified multichannel discharge circuit is developed and validated by the experiment. With only 6 KV input voltage, 31 channels discharge is achieved. The breakdown voltage of each electrode gap is larger than 3 KV. Comapred with traditional PSJA, the multichannel discharge circuit has higher efficiency and larger affected aera. As a reuslt, it is more feasible in practical application.
引文