|Table of Contents|

High-precision numerical simulation of breakup processes of liquid jet in incompressible airflow(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2018年01期
Page:
59-66
Research Field:
研究与设计
Publishing date:

Info

Title:
High-precision numerical simulation of breakup processes of liquid jet in incompressible airflow
Author(s):
ZHANG Botao1; 2;  Zhang Youping1;  ZHANG Minqing3
1.Xi'an Aerospace Propulsion Institute, Xi'an 710100, China; 2.Key Laboratory for Science and Technology on Liquid Rocket Engine, Xi'an 710100, China; 3.Academy of Aerospace Propulsion Technology, Xi'an 710100, China
Keywords:
incompressible airflow;  jet;  bag breakup;  shear breakup;  adaptive mesh refinement;  gerris
PACS:
V430-34
DOI:
-
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.

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