火箭推进2018，Vol.44Issue(1)：59-66,8.
射流在不可压气流中破碎过程高精度数值仿真
High-precision numerical simulation of breakup processes of liquid jet in incompressible airflow
摘要
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 refine-ment algorithm based on Gerris open code,by which the visualization of the whole process of the jet col-umn 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 distribu-tion 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 understand-ing of the jet breakup mechanism and effective evaluation of breakup.关键词
不可压气流/射流/袋式破碎/剪切破碎/自适应网格加密/GerrisKey words
incompressible airflow/jet/bag breakup/shear breakup/adaptive mesh refinement/gerris分类
航空航天引用本文复制引用
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(1):59-66,8.基金项目
国家重大基础研究项目(613193) （613193）
