Flow visualization of shock/water column interactions
Flow visualization of shock/water column interactions
复制标题
DOI：
10.1007/s00193-007-0115-9
复制
发表时间：
2008-02
期刊：
影响因子：
2.2
通讯作者：
H. Chen;S. Liang
中科院分区：
文献类型：
--
作者：
H. Chen;S. Liang
高速气流作用下液滴的破碎是一个典型的多相流问题。激波/液滴相互作用是液滴破碎的开始阶段。因此，研究激波/液滴相互作用将是解释液滴破碎机理的一个里程碑。在这项研究中，一个可压缩的多相求解器与五方程模型成功地研究激波/水柱的相互作用。对于代码验证，首先计算仅接口、气-气激波管和气-液激波管问题。随后，平面激波与水柱相互作用进行了模拟。透射波和局部高压区和低压区的水柱内的交替出现，观察清楚。最后，研究了平面激波与两水柱的相互作用。在这项工作中，两个水柱的水平和垂直的安排进行了研究。研究发现，不同的安排可以导致相互作用过程的多样性。通过流场显示技术，给出了激波/水柱相互作用产生的复杂流场结构。
The breakup of a liquid droplet induced by a high speed gas stream is a typical multiphase flow problem. The shock/droplet interaction is the beginning stage of the droplet breakup. Therefore, investigation of the shock/droplet interactions would be a milestone for interpreting the mechanism of the droplet breakup. In this study, a compressible multiphase solver with a five-equation model is successfully developed to study shock/water column interactions. For code validation, interface-only, gas–gas shock tube, and gas–liquid shock tube problems are first computed. Subsequently, a planar shock wave interacting with a water column is simulated. The transmitted wave and the alternative appearances of local high- and low-pressure regions inside the water column are observed clearly. Finally, a planar shock wave interacting with two water columns is investigated. In this work, both horizontal and vertical arrangements of two water columns are studied. It is found that different arrangements can result in the diversity of the interacting process. The complex flow structures generated by shock/water column interactions are presented by flow-visualization techniques.