Richtmyer-Meshkov 不稳定性的实验研究

2018/12/13   下载量： 3 次

方案摘要

方案下载
应用领域 能源/新能源
检测样本 太阳能电池
检测项目
参考标准 暂无

采用LaVision公司的平面激光诱导荧光(PLIF)系统和粒子成像测速系统(PIV)对2马赫速度激波管进行测量。实验系统由1台Nd:YAG激光器和1台FlowMaster2相机构成。

方案下载
配置单
方案详情

The Richtmyer-Meshkov instability (RMI) is experimentally investigated using several different
initial conditions and with a range of diagnostics. First, a broadband initial condition is created
using a shear layer between helium+acetone and argon. The post-shocked turbulent mixing is investigated using planar laser induced fluorescence (PLIF). The signature of turbulent mixing is present in the appearance of an inertial range in the mole fraction energy spectrum and the isotropy of the late-time dissipation structures. The distribution of the mole fraction values does not appear to transition to a homogeneous mixture, and it is possible that this effect may be slow to develop for the RMI. Second, the influence of the RMI on the kinetic energy spectrum is investigated using particle image velocimetry (PIV). The influence of the perturbation is visible relatively far from the interface when compared to the energy spectrum of an initially flat interface. Closer to the perturbation, an increase in the energy spectrum with time is observed and is possibly due to a cascade of energy from the large length scales of the perturbation.Finally, the single mode perturbation growth rate is measured after reshock using a new high speed imaging technique. This technique produced highly time-resolved interface position measurements. Simultaneous measurements at the spike and bubble location are used to compute a perturbation growth rate history. The growth rates from several experiments are compared to a new reshock growth rate model.

上一篇 在一个双稳湍流涡旋火焰中，对间歇性动态的时间-频率定位
下一篇 分形格栅生成湍流场的粒子成像测速研究

文献贡献者

北京欧兰科技发展有限公司
金牌会员 丨 第17年
查看全部资料
相关仪器 更多
相关方案
更多

相关产品

当前位置： 欧兰科技 方案 Richtmyer-Meshkov 不稳定性的实验研究

关注

拨打电话

留言咨询