低气压SDBD等离子体体积力结构参数影响
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摘要
采用粒子图像测速技术对7 kPa气压下表面介质阻挡放电等离子体诱导射流进行测量,根据速度场利用二维N-S方程求解得到等离子体体积力空间分布,研究了电极宽度与电极间隙对诱导体积力与速度的影响。实验结果表明:电极宽度对体积力与诱导速度影响较大。采用相对较宽的植入电极能够取得更大的体积力与诱导速度,存在最优暴露电极与植入电极宽度比以取得最佳控制效果。增大电极间隙,体积力与诱导速度先增加后下降,气流加速距离增加,并存在最优电极间隙。采用电极宽度比约0.56,电极间隙为6 mm时取得最佳控制效果。
Particle image velocimetry is adopted to measure the jet flow induced by surface dielectric barrier dis-charge(SDBD)plasma at air pressure of 7 kPa,the spatial distribution of the plasma induced body force is calculat-ed by using Navier-Stokes equations in accordance with the velocity field,and the influences of the electrode width and the gap width between electrodes on such induced body force and induced velocity are studied. Experimental re-sults prove that larger body force and induced velocity could be obtained if wider encapsulated electrode is used. As the gap width increases,the body force and velocity field increase firstly and then decrease,and the airflow accelera-tion distance becomes longer. There is an optimal value of the electrode width ratio as well as the gap width. It is con-cluded that the best control effect can be obtained with the electrode width ratio of 0.56 and the gap width of 6 mm.
Particle image velocimetry is adopted to measure the jet flow induced by surface dielectric barrier dis-charge(SDBD)plasma at air pressure of 7 kPa,the spatial distribution of the plasma induced body force is calculat-ed by using Navier-Stokes equations in accordance with the velocity field,and the influences of the electrode width and the gap width between electrodes on such induced body force and induced velocity are studied. Experimental re-sults prove that larger body force and induced velocity could be obtained if wider encapsulated electrode is used. As the gap width increases,the body force and velocity field increase firstly and then decrease,and the airflow accelera-tion distance becomes longer. There is an optimal value of the electrode width ratio as well as the gap width. It is con-cluded that the best control effect can be obtained with the electrode width ratio of 0.56 and the gap width of 6 mm.
引文
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[27]车学科,聂万胜,丰松江,等.介质阻隔面放电的结构参数[J].高电压技术,2009,35(9):2213-2219.CHE Xueke,NIE Wansheng,FENG Songjiang,et al.Geometrical parameter of dielectric barrier surface discharge high voltage engineering[J].High Voltage Engineering,2009,35(9):2213-2219.77
[2]史志伟,杜海,李铮,等.等离子体流动控制技术原理及典型应用[J].高压电器,2017,53(4):72-78.SHI Zhiwei,DU Hai,LI Zheng,et al.Mechanism and applications of plasma flow control technology[J].High Voltage Apparatus,2017,53(4):72-78.
[3]WANG J J,CHOI K S,FENG L H,et al.Recent developments in DBD plasma flow control[J].Progress in Aerospace Sciences,2013,62(4):52-78.
[4]吴云,李应红.等离子体流动控制研究进展与展望[J].航空学报,2015,36(2):381-405.WU Yun,LI Yinghong.Progress and outlook of plasma flow control[J].Acta Aeronautica et Astronautica Sinica,2015,36(2):381-405.
[5]聂万胜,程钰锋,车学科.介质阻挡放电等离子体流动控制研究进展[J].力学进展,2012,42(6):722-734.NIE Wansheng,CHENG Yufeng,CHE Xueke.A review on dielectric barrier discharge plasma flow control[J].Advances in Mechanics,2012,42(6):722-734.
[6]FENG L,GAO C,ZHENG B,et al.Aerodynamic flow acceleration with one atmosphere uniform induced by single and multiple DBD plasma actuation based on PIV[R].US:AIAA Paper,2013:2013-2746.
[7]张立志,李修乾,陈庆亚,等.两种翼型螺旋桨ARA-D和S1223的等离子体增效实验研究[J].航天器环境工程,2017,34(1):81-85.ZHANG Lizhi,LI Xiuqian,CHEN Qingya,et al.Experimental study of the enhancement of plasma flow control of ARA-D and S1223 propeller airfoils[J].Spacecraft Environment Engineering,2017,34(1):81-85.
[8]FENG Lihao,WANG Jinjun.Modification of a circular cylinder wake with synthetic jet:Vortex shedding modes and mechanism[J].European Journal of Mechanics B-Fluids,2014,43(43):14-32.
[9]罗朋振,孙丹凤,鲁娜,等.不同气体介质下极不对称DBD放电模式转化研究[J].高压电器,2017,53(4):65-71.LUO Pengzhen,SUN Danfeng,LU Na,et al.Investigation on discharge mode transition of highly asy mmetric DBDunder different gas dielectrics[J].High Voltage Apparatus,2017,53(4):65-71.
[10]ROTH J R,DAI X.Optimization of the aerodynamic plasma actuator as an electrohydrodynamic(EHD)electrical eevice[R].US:AIAA Paper,2006-1203.
[11]FORTE M,JOLIBOIS J,PONS J,et al.Optimization of a dielectric barrier discharge actuator by stationary and nonstationary measurements of the induced flow velocity:Application to airflow control[J].Experiments in Fluids,2007,43(6):917-928.
[12]GAO G Q,DONG L,PENG K,et al.Com parison of the surface dielectric barrier discharge characteristics under different electrode gaps[J].Physics of Plasmas,2017,24(1):013510.
[13]MURPHY J,LAVOIE P.Characterization of DBD plasma actuators via PIV measurements[R].US:AIAA Paper,2013:0346.
[14]YANG Liang,YAN Huijie,QI Xiaohua,et al.Surface potential distribution and airflow performance of different air-exposed electrode plasma actuators at different alternating current/direct current voltages[J].Physics of Plasmas,2015,22(4):043518.
[15]姜家文,田希晖,陈庆亚,等.基于光强分布的SDBD暴露电极形状优化实验[J].高电压技术,2016,42(3):843-848.JIANG Jiawen,TIAN Xihui,CHEN Qingya,et al.Optimization experiment of SDBD exposed electrode shape based on light intensity distribution[J].High Voltage Engineering,2016,42(3):843-848.
[16]SUZEN Y B,HUANG P G,JACOB J D,et al.Numerical simulations of plasma based flow control applications[R].US:AIAA Paper,2005:4633.
[17]WU B,GAO C,LIU F,et al.Simulation of body force effect on steady and unsteady flow induced by dbd plasma actuator[R].US:AIAA Paper,2016-4015.
[18]CHENG Y F,CHE X K,NIE W.Numerical study on propeller flow-separation control by DBD-plasma aerodynamic actuation[J].IEEE Transactions on Plasma Science,2013,41(4):892-898.
[19]FRIZ P D,ROVEY J.Improving plasma actuator thrust at low pressure through geometric variation[R].US:AIAAPaper,2014:0146.
[20]CHE Xueke,NIE Wansheng,SHAO Tao,et al.Study of flow fields induced by surface dielectric barrier discharge actuator in low-pressure air[J].Physics of Plasmas,2014,21(4):289-318.
[21]SHAO T,WANG L,ZHANG C,et al.A com pact microsecond-Pulse generator used for surface dielectric barrier discharges[J].IEEE Transactions on Plasma Science,2016,44(10):2072-2078.
[22]田学敏,田希晖,车学科,等.非定常等离子体诱导流场实验研究[J].高电压技术,2015,41(12):4060-4065.TIAN Xuemin,TIAN Xihui,CHE Xueke,et al.Experimental study on unsteady plasma induced flow field[J].High Voltage Engineering,2015,41(12):4060-4065.
[23]MENG X S,WANG Y S,WANG J,et al.Body force produced by plasma actuator using piv and pressure measurements[R].US:AIAA Paper,2013-0396,2013.
[24]WANG Y S,ZHENG B R,GAO C,et al.Experimental study of DBD plasma actuation body force based on PIV[R].US:AIAA Paper,2013-0350.
[25]田希晖,周朋辉,聂万胜,等.表面介质阻挡放电等离子体体积力实验[J].航空动力学报,2014,29(6):1426-1433.TIAN Xihui,ZHOU Penghui,NIE Wansheng,et al.Experiment on plasma body force of SDBD[J].Journal of Aerospace Power,2014,29(6):1426-1433.
[26]SONI J,ROY S.Low pressure characterization of dielectric barrier discharge actuators[J].Applied Physics Letters,2013,102(11):1166-1172.
[27]车学科,聂万胜,丰松江,等.介质阻隔面放电的结构参数[J].高电压技术,2009,35(9):2213-2219.CHE Xueke,NIE Wansheng,FENG Songjiang,et al.Geometrical parameter of dielectric barrier surface discharge high voltage engineering[J].High Voltage Engineering,2009,35(9):2213-2219.77