Experiment on interaction of shock and elliptic heavy-gas cylinder by using PLIF
-
摘要: 在水平激波管中，采用平面激光诱发荧光(planar laser-induced fluorescence, PLIF)方法对椭圆形重气柱界面的Richtmyer-Meshkov不稳定性进行实验。气柱由SF6混入一定比例的丙酮蒸气构成，环境气体为空气。通过改变椭圆形气柱的长短轴比值，得到了激波马赫数为1.25时，3种初始界面的演化形态。通过相对体积分数标定，得到了界面失稳演化过程中的相对体积分数分布，观察到了激波作用后界面气体聚集、转移、消散等现象。实验结果发现，对于流向轴长与展向轴长之比较大的气柱界面，初始界面产生的涡量更大且分布更广，其界面不稳定性发展得越迅速和剧烈。失稳发展迅速的界面甚至出现涡对碰撞并产生尾部射流结构的现象。初始界面直接决定了失稳发展初期形成的涡对强度和间距，并对后期演化有重要影响。
-
关键词:
- Richtmyer-Meshkov不稳定性 /
- PLIF /
- 体积分数场 /
- 气柱 /
- 激波管
Abstract: An experimental investigation of Richtmyer-Meshkov (R-M) instability in the elliptic heavy gas cylinder was presented in detail. The shock-induced instability was studied in a horizontal shock tube using the planar laser-induced fluorescence (PLIF). The gas cylinder surrounded by air was composed of SF6 and acetone vapor. By adjusting the ratio of the long axis to the short one in the gas cylinder was achieved the evolution of three types of initial interface accelerated by a Mach 1.25 shock. After the calibration, concentration map were obtained. Furthermore, the congregation, transfer and dissipation in the concentration field was revealed. With a larger aspect ratio, the gas cylinder has a wider deposition of baroclinic vorticity, resulting in a faster evolution. When the evolution is rapid, a jet occurs in the trail structure due to the collision of the vortex pair. It was demonstrated that the initial configuration directly determines the strength and spacing distance of the vortex pair at early times, thereby exerting a significant influence on the instability evolution at later times.-
Key words:
- Richtmyer-Meshkov instability /
- PLIF /
- concentration field /
- gas cylinder /
- shock tube
-
图 3 气柱界面内部气体分布
Figure 3. Distribution of relative volume fraction in the gas cylinder interface
图 5 压力梯度、密度梯度夹角正弦值沿界面半周长的变化
Figure 5. The change of the sine angle of pressure gradient and density gradient along the half perimeter of the interface
图 6 不同形状界面气体相对体积分数分布
Figure 6. Distribution of relative volume fraction of gas at different gas cylinder interfaces
图 7 圆形界面沿轴线的气体相对体积分数分布
Figure 7. Relative volume fraction of gas along axises of circular interface
图 8 界面相对体积分数的概率密度分布
Figure 8. Probability density of interfacial relative volume fraction
图 9 峰值气体相对体积分数与时间关系
Figure 9. Relation between of relative volume fraction peak and time
-
[1] Meshkov E E. Instability of the interface of two gases accelerated by a shock wave[J]. Fluid Dynamics, 1969, 4(5):101-104. http://d.old.wanfangdata.com.cn/Periodical/wlxb201723027 [2] Haas J, Sturtevant B. Interaction of weak shock waves with cylindrical and spherical gas inhomogeneities[J]. Journal of Fluid Mechanics, 1987, 181:41-76. doi: 10.1017/S0022112087002003 [3] Jacobs J W. Shock-induced mixing of a light-gas cylinder[J]. Journal of Fluid Mechanics, 1992, 234:629-649. doi: 10.1017/S0022112092000946 [4] Jacobs J W. The dynamics of shock accelerated light and heavy gas cylinders[J]. Physics of Fluids A, 1993, 5(9):2239-2247. doi: 10.1063/1.858562 [5] Tomkins C, Prestridge K, Zoldi C, et al. An investigation of shock-accelerated, unstable gas cylinders using simultaneous density-field visualization and PIV [C]//The 4th International Symposium on Particle Image Velocimetry. Germany, 2001: 1136. [6] Tomkins C, Prestridge K, Rightley P, et al. Flow morphologies of two shock-accelerated unstable gas cylinders[J]. Journal of Visualization, 2002, 5(3):273-283. doi: 10.1007/BF03182335 [7] Kumar S, Orlicz G, Tomkins C, et al. Stretching of material lines in shock-accelerated gaseous flows[J]. Physics of Fluids, 2005, 17(8):082107. doi: 10.1063/1.2031347 [8] Kumar S, Vorobieff P, Orlicz G, et al. Complex flow morphologies in shock-accelerated gaseous flows[J]. Physica D, 2007, 235(1):21-28. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=bdbcdf0e0282f4b502c2c68e5b86d83b [9] Si T, Zhai Z G, Luo X S. Experimental study of Richtmyer-Meshkov instability in a cylindrical converging shock tube[J]. Laser and Particle Beams, 2014, 32(3):343-351. doi: 10.1017/S0263034614000202 [10] 何惠琴, 翟志刚, 司廷, 等.反射激波作用下两种重气柱界面不稳定性实验研究[J].实验流体力学, 2014, 28(6):56-60. http://d.old.wanfangdata.com.cn/Periodical/ltlxsyycl201406008He Huiqin, Zhai Zhigang, Si Ting, et al. Experimental study on the shocked RM instability of two kinds of heavy gas cylinder[J]. Journal of Experiments in Fluid Mechanics, 2014, 28(6):56-60. http://d.old.wanfangdata.com.cn/Periodical/ltlxsyycl201406008 [11] Zou L Y, Liu C L, Tan D W, et al. On interaction of shock wave with elliptic gas cylinder[J]. Journal of Visualization, 2010, 13(4):347-353. doi: 10.1007/s12650-010-0053-y [12] Zou L Y, Huang W B, Liu C L, et al. On the evolution of double shock-accelerated elliptic gas cylinders[J]. Journal of Fluids Engineering, 2014, 136(9):031204. http://cn.bing.com/academic/profile?id=d99fff72b338cb9ecd62ae8c4ec2d723&encoded=0&v=paper_preview&mkt=zh-cn [13] 邹立勇, 廖深飞, 刘金宏, 等.双椭圆界面Richtmyer-Meshkov流动中的相互干扰效应[J].高压物理学报, 2015, 29(3):191-198. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gywlxb201503005Zou Liyong, Liao Shenfei, Liu Jinhong, et al. Interaction effect of two ellipse Richtmyer-Meshkov flows[J]. Chinese Journal of High Pressure Physics, 2015, 29(3):191-198. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gywlxb201503005 [14] Balakumar B, Orlicz G, Tomkins C. Dependence of growth patterns and mixing width on initial conditions in Richtmyer-Meshkov unstable fluid layers[J]. Physica Scripta, 2008, T132:014013. doi: 10.1088/0031-8949/2008/T132/014013 [15] Tomkins C, Kumar S, Orlicz G, et al. An experimental investigation of mixing mechanisms in shock-accelerated flow[J]. Journal of Fluid Mechanics, 2008, 611:131-150. doi: 10.1017-S0022112008002723/ [16] Bai J S, Zou L Y, Wang T, et al. Experimental and numerical study of shock-accelerated elliptic heavy gas cylinders[J]. Physical Review E, 2010, 82:056318. doi: 10.1103/PhysRevE.82.056318 期刊类型引用(20)
1. 党发宁，王宝生，李玉涛，任劼，方建银. 冲击速度及骨料率对混凝土动强度的影响研究. 西安建筑科技大学学报(自然科学版). 2024(01): 7-13+22 . 
百度学术2. 熊凌浩，周传波，蒋楠，王腾，蒙贤忠. 大断面隧道新浇二衬混凝土爆破振动控制安全阈值. 工程爆破. 2023(01): 1-9 . 百度学术3. 庄金平，任凯，杨尊煌. 早龄期持续受荷对成熟混凝土梁受弯性能影响试验研究. 混凝土. 2023(11): 49-52+57 . 百度学术4. 王亚强，李二宝，王骞，漆斌，汪熙，杨海涛. 爆破振动对混凝土初凝期强度影响规律及降震试验研究. 中国矿业. 2022(03): 124-130 . 百度学术5. 潘长春. 基于爆破振动的新浇混凝土现行安全标准探讨. 科技创新与应用. 2021(08): 75-77+81 . 百度学术6. 缪琪，赵章华，俞海杰，孙旭峰. 水厂新浇构筑物在基坑爆破时的抗裂性能研究. 山西建筑. 2021(20): 40-43 . 百度学术7. 谢立栋，东兆星，姜慧，朱炯，齐燕军. 早龄期混凝土动强度应变率系数的统计方法. 兵工学报. 2021(S1): 159-166 . 百度学术8. 陈秋南，贺泳超，邹根，李君杰，周相识，周光裕. 爆破施工对隧道二衬结构影响的试验研究. 铁道科学与工程学报. 2020(03): 676-681 . 百度学术9. 杨小林，刘宝，吴礼报. 振动荷载作用下新浇混凝土损伤累积规律试验研究. 混凝土. 2020(09): 27-30+36 . 百度学术10. 叶红宇，杨小林，卓越. 基于损伤累积的爆破振动主频衰减规律试验研究. 矿业研究与开发. 2019(04): 92-96 . 百度学术11. 杨小林，李拴杰，褚怀保，姚智慧，杨杰，刘宝. 多次振动荷载作用下新浇混凝土超声波波速变化规律试验研究. 河南理工大学学报(自然科学版). 2018(03): 124-128 . 百度学术12. 褚怀保，杨小林，叶红宇，梁为民，余永强，魏海霞. 隧道衬砌混凝土爆破损伤累积规律试验研究. 铁道学报. 2018(03): 132-136 . 百度学术13. 褚怀保，吴礼报，杨小林. 振动荷载作用对新浇混凝土强度与耐久性影响试验研究. 硅酸盐通报. 2018(09): 2919-2923 . 百度学术14. 褚怀保，杨小林，叶红宇，吴礼报. 新浇混凝土爆破振动损伤累积规律模拟试验研究. 煤炭学报. 2018(09): 2469-2475 . 百度学术15. 张宏兵. 面向爆破应力波小净距隧道混凝土安全振动标准研究. 湖南交通科技. 2017(03): 180-184 . 百度学术16. 潘慧敏，赵庆新，付军. 早龄期混凝土受扰性能研究进展. 硅酸盐通报. 2017(01): 64-70 . 百度学术17. 褚怀保，吴礼报，杨小林，叶红宇，李栓杰，赵禹. 新浇混凝土爆破振动损伤累积机制试验研究. 中国安全科学学报. 2017(09): 69-73 . 百度学术18. 吴帅峰，王戈，袁东凯，刘殿书. 爆破振动对新浇混凝土影响的试验研究. 振动与冲击. 2017(02): 39-44+88 . 百度学术19. 戴思南，吴新霞，李广平. 结构尺寸与龄期对混凝土爆破振动响应的影响. 爆破. 2015(01): 131-134+150 . 百度学术20. 罗福友，邱子华，周浩仓，潘昌义，罗福龙，杨康. 沟槽爆破参数优化及成本分析. 江西理工大学学报. 2015(03): 58-63 . 百度学术其他类型引用(12)
-
下载:
百度学术
图(10)
计量
- 文章访问数: 4269
- HTML全文浏览量: 1236
- PDF下载量: 232
- 被引次数: 32