INSTABILITIES IN A SHOCK INTERACTION WITH A PERTURBED CURTAIN OF PARTICLES
INSTABILITIES IN A SHOCK INTERACTION WITH A PERTURBED CURTAIN OF PARTICLES
复制标题
与扰动粒子幕的冲击相互作用中的不稳定性
DOI：
--
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
P. Vorobieff
中科院分区：
文献类型：
--
作者：
Ricardo González Izard;S. Lingampally;P. Wayne;G. Jacobs;P. Vorobieff
我们提出了一个二维计算研究激波与粒子播种帘幕的相互作用，其中粒子最初占体积的4%，其余的是空气。在流动方向初始帷幕深度可变的情况下，数值结果预测了激波-帷幕干扰后气相和弥散相中的涡旋形成。这一现象不同于在气相密度界面上观察到的斜压(Richtmyer-Meshkov)不稳定性，它是由颗粒相密度分布的变化以及与之相关的相间速度变化引起的。
We present a two-dimensional computational study of a shock interaction with a particle-seeded curtain where particles initially comprise 4% by volume, and the rest is air. If the initial depth of the curtain in the streamwise direction is variable, numerical results predict vortex formation in both the gas phase and the dispersed phase after the shock-curtain interaction. The phenomenon is distinct from baroclinic (Richtmyer–Meshkov) instability observed on gaseous density interfaces and is caused by the changes in the particle phase number density distribution and related interphase velocity changes.