航天推进技术研究院主办
[1]张波涛,张友平,张民庆.射流在不可压气流中破碎过程高精度数值仿真[J].火箭推进,2018,44(01):59-66.
ZHANG Botao,Zhang Youping,ZHANG Minqing.High-precision numerical simulation of breakup processes of liquid jet in incompressible airflow[J].Journal of Rocket Propulsion,2018,44(01):59-66.
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ZHANG Botao,Zhang Youping,ZHANG Minqing.High-precision numerical simulation of breakup processes of liquid jet in incompressible airflow[J].Journal of Rocket Propulsion,2018,44(01):59-66.
射流在不可压气流中破碎过程高精度数值仿真
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
44
期数:
2018年01期
页码:
59-66
栏目:
研究与设计
出版日期:
2018-02-28
- Title:
- High-precision numerical simulation of breakup processes of liquid jet in incompressible airflow
- 文章编号:
- 1672-9374(2018)01-0059-08
- Keywords:
- incompressible airflow; jet; bag breakup; shear breakup; adaptive mesh refinement; gerris
- 分类号:
- V430-34
- 文献标志码:
- A
- 摘要:
- 研究液体射流在不可压气流中破碎过程的难点在于捕捉射流柱表面细节特征。采用基于Gerris开源代码的树形自适应加密算法和VOF方法对射流袋式破碎和剪切破碎的典型算例数值计算,实现了射流柱从变形、弯曲到破碎成液滴的全过程可视化,清晰的捕捉到了射流柱表面形成的表面波,计算得到的射流轨迹、破碎长度和液滴空间分布均与文献中实验结果很好的吻合。直观表明表面波导致射流柱不稳定,射流袋式破碎液滴较大,剪切破碎液滴平均直径约为60 μm,基于Gerris的高精度数值算法有助于进一步认识射流破碎机理和高效评估破碎效果。
- Abstract:
- The difficulty of studying the breakup process of liquid jet in incompressible airflow is to capture the surface detail of the jet column.The typical calculating examples for bag breakup and shear breakup of jet column was numerically computed by VOF method and tree-structure adaptive mesh refinement algorithm based on Gerris open code, by which the visualization of the whole process of the jet column distortion, bend and breakup was realized, and the surface waves formed on the surface of the jet columns also be clearly captured.The calculated jet trajectory, breakup length and droplet space distribution are consistent with the experimental results in the reference literature, which shows that surface wave can cause instability of the jet column, big droplet of bag breakup and about 60 μm diameter droplet of shear breakup.The high-precision numerical algorithm based on Gerris is conducive to further understanding of the jet breakup mechanism and effective evaluation of breakup.
参考文献/References:
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备注/Memo
收稿日期:2017-09-11; 修回日期:2017-11-20 基金项目: 国家重大基础研究项目(613193) 作者简介: 张波涛(1990—),男,硕士研究生,研究领域为液体火箭发动机喷雾燃烧技术
更新日期/Last Update:
1900-01-01