Numerical investigation of planar shock wave impinging on spherical gas bubble with different densities
Numerical investigation of planar shock wave impinging on spherical gas bubble with different densities
复制标题
平面激波撞击不同密度球形气泡的数值研究
DOI：
10.1063/1.5092317
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发表时间：
2019-05
影响因子：
4.6
通讯作者：
Pan Zhenhua
中科院分区：
文献类型：
--
作者：
Zhu Yuejin;Yang Zhiwei;Luo Kai Hong;Pan Jianfeng;Pan Zhenhua
用数值方法研究了平面激波与含六氟化硫、制冷剂-22、氖或氦的球形气泡的相互作用。通过高分辨率的数值模拟，阐明了Atwood数（At）对激波和气泡演化的影响。结果表明，环境空气与气泡之间的物理性质差异对波型的演化和气泡变形有显著影响。对于本研究中的快/慢配置（At > 0）（At = 0.67和0.51），入射激波聚焦在内部右界面附近，形成向外喷流。混合度、平均涡度和环流绝对值均随阿特伍德数的增大而增大。相比之下，对于慢/快配置（At 0或At < 0），气泡的有效体积基本上随着Atwood数减小而减小。因此，总体上，阿特伍德数对气泡有效体积、混合度、平均涡度和环流的演化同时具有非单调的影响。
The interaction between a planar shock wave and a spherical gas bubble containing sulfur hexafluoride, Refrigerant-22, neon, or helium is studied numerically. Influences of the Atwood number (At) on the evolution of the shock wave and gas bubble are clarified by using high-resolution computational simulations. The results show that the difference in the physical properties between the ambient air and the gas bubble has a significant influence on the evolution of wave pattern and bubble deformation. For the fast/slow configuration (At > 0) in the present study (At = 0.67 and 0.51), the incident shock focuses near the interior right interface to form an outward jet. Besides, the mixedness, average vorticity, and the absolute value of circulation all increase as the Atwood number increases. By contrast, for the slow/fast configuration (At 0 or At < 0, the effective volume of the gas bubble basically decreases when the Atwood number decreases. Hence, on the whole, the Atwood number has a nonmonotonic influence on the evolution of effective volume of gas bubble, mixedness, average vorticity, and circulation simultaneously.
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影响因子：
4.6
作者：
J. Jacobs
通讯作者：
J. Jacobs
影响因子：
2.2
作者：
P. Georgievskiy;V. Levin;O. Sutyrin
通讯作者：
P. Georgievskiy;V. Levin;O. Sutyrin
影响因子：
2.8
作者：
Yuejin Zhu;Yang Zhiwei;Z. Pan;Penggang Zhang;J. Pan
通讯作者：
Yuejin Zhu;Yang Zhiwei;Z. Pan;Penggang Zhang;J. Pan
影响因子：
4.1
作者：
Jiang, GS;Shu, CW
通讯作者：
Shu, CW
影响因子：
3.7
作者：
N. Zabusky;S. Zeng
通讯作者：
N. Zabusky;S. Zeng