Study on atomization process of liquid sheet formed by impinging jets
Study on atomization process of liquid sheet formed by impinging jets
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DOI：
10.2514/6.2008-4847
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发表时间：
2008-12
期刊：
影响因子：
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通讯作者：
C. Inoue;Toshinori Watanabe;T. Himeno
中科院分区：
文献类型：
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作者：
C. Inoue;Toshinori Watanabe;T. Himeno
为了阐明和量化冲击射流喷嘴的雾化特性，对冲击射流喷嘴的雾化特性进行了数值分析、实验观察和理论分析。为了计算雾化现象，发展了一种数值方法。通过与相应夹断实验的定量比较，验证了该方法的正确性。然后对两股水射流相向碰撞产生的轴对称液膜雾化进行了实验和理论研究，并进行了数值分析。通过Kelvin-Helmholtz型不稳定性的雾化过程的数值结果显示定性相似的实验可视化和理论分析。最后，对冲击射流喷嘴的雾化特性进行了数值分析。定量分析了喷射器面板上的液体分布，发现液膜的动态行为对下游液体分布有很大影响。
Aiming at clarifying and quantifying atomization characteristics at impinging jet injector, numerical analysis, experimental observation and theoretical analysis were conducted. For computing atomization phenomena, a numerical method was developed. The method was verified through quantitative comparisons with corresponding experiment of pinch off. Then experimental and theoretical studies were performed on atomization of axisymmetric liquid sheet, which was produced by collision of two water jets in opposite direction, as well as numerical analysis. The numerical results of the atomization process through KelvinHelmholtz type of instability showed qualitative resemblance with experimental visualization and theoretical analysis. Finally, atomization characteristics at impinging jet injector were numerically analyzed. Liquid distributions from the injector face plate were quantified, and the dynamic behavior of the liquid sheet was found to affect strongly on liquid distributions at downstream.