激波与液滴作用的空气动力学现象的实验研究
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摘要
在水平激波管中对激波与液滴的相互作用进行了实验研究。使用氮气作为高压驱动气体,进行了激波马赫数为1.1及1.25的实验,更换生成液滴的不锈钢针头获得了不同尺寸的液滴,用高速摄影仪详细记录了液滴从压缩变形到破碎雾化的过程。通过分析实验数据,探讨液滴位移及横向直径随时间的变化关系,液滴在激波作用之后会进行加速运动,随着液滴的不断变形,其横向直径先增大后减小,直至完全雾化。
This paper conducts experimental study on the interaction between shock wave and liquid drop in horizontal shock tube;conducts the experiment with shock Mach number 1.1 and 1.25 with nitrogen as high pressure driving gas;replaces the stainless steel needle head producing liquid drop and obtains liquid drops with different sizes;records the process of liquid drop from compressive deformation to crushing atomization in detail by using a high-speed camera;obtains the relationship between liquid drop displacement and horizontal diameter and time by analyzing experimental data.After shock wave action,liquid drops will have accelerated motion.With the constant deformation of liquid drop,its horizontal diameter first increases and then decreases till complete atomization.
This paper conducts experimental study on the interaction between shock wave and liquid drop in horizontal shock tube;conducts the experiment with shock Mach number 1.1 and 1.25 with nitrogen as high pressure driving gas;replaces the stainless steel needle head producing liquid drop and obtains liquid drops with different sizes;records the process of liquid drop from compressive deformation to crushing atomization in detail by using a high-speed camera;obtains the relationship between liquid drop displacement and horizontal diameter and time by analyzing experimental data.After shock wave action,liquid drops will have accelerated motion.With the constant deformation of liquid drop,its horizontal diameter first increases and then decreases till complete atomization.
引文
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[7]Hsiang L P,Faeth G.Drop deformation and breakupdue to shock wave and steady disturbances[J].Int JMultiphase Flow,1995,21(4):545-560.
[8]陆守香,秦友花.激波诱导的液滴变形和破碎[J].高压物理学报,2000,14(2):151-154.
[9]耿继辉,叶经方,王健,等.激波诱导液滴变形和破碎现象实验研究[J].工程热物理学报,2003,24(5):797-800.
[10]Kobiera A,Szymczyk J.Study of the shock-inducedacceleration of hexane droplets[J].Shock Waves,2009,18:475-485.
[11]施红辉,肖毅,杜凯,等.用垂直激波管研究多层流体界面上的Richtmyer-Meshkov不稳定性[C]//第15届全国激波与激波管学术会议论文集.杭州:353-358.
[12]Zhang L T,Shi H H,Wang C,et al.Aerodynamiccharacteristics of solid particles'acceleration by shockwaves[J].Shock Waves,2011,21(3):243-252.
[2]Engel O.Fragmentation of waterdrops in the zone be-hind an air shock[J].Journal of Research of the Nation-al Bureau of Standards,1958,60(3):245-280.
[3]Ranger A,Nicholls J.Aerodynamics shattering of liquiddrops[J].AIAA J,1969,7(2):285-290.
[4]Kauffman C,Nicholls J.Shock-wave ignition of liquidfuel drops[J].AIAA J,1971,9(5):880-885.
[5]WierzbaA,Takayama K.Experimental investigation ofaerodynamic breakup of liquid drops[J].AIAA J,1988,26(11):1329-1335.
[6]Hsiang L P,Faeth G.Near-limit drop deformation andsecondary breakup[J].J Multiphase Flow,1992,18(5):635-652.
[7]Hsiang L P,Faeth G.Drop deformation and breakupdue to shock wave and steady disturbances[J].Int JMultiphase Flow,1995,21(4):545-560.
[8]陆守香,秦友花.激波诱导的液滴变形和破碎[J].高压物理学报,2000,14(2):151-154.
[9]耿继辉,叶经方,王健,等.激波诱导液滴变形和破碎现象实验研究[J].工程热物理学报,2003,24(5):797-800.
[10]Kobiera A,Szymczyk J.Study of the shock-inducedacceleration of hexane droplets[J].Shock Waves,2009,18:475-485.
[11]施红辉,肖毅,杜凯,等.用垂直激波管研究多层流体界面上的Richtmyer-Meshkov不稳定性[C]//第15届全国激波与激波管学术会议论文集.杭州:353-358.
[12]Zhang L T,Shi H H,Wang C,et al.Aerodynamiccharacteristics of solid particles'acceleration by shockwaves[J].Shock Waves,2011,21(3):243-252.