Structure of a supersonic gas-liquid jet at high liquid concentrations

被引：0
作者：
Boiko, V. M. [1 ]
Lotov, V. V. [1 ]
Nesterov, A. Yu. [1 ]
Poplavski, S. V. [1 ]
机构：
[1] Khristianovich Inst Theoret & Appl Mech SB RAS, Novosibirsk, Russia
来源：
THERMOPHYSICS AND AEROMECHANICS | 2023年 / 30卷 / 06期
关键词：
gas-liquid flow; underexpanded supersonic jet; aerodynamic breakup of droplets; ATOMIZATION;
D O I：
10.1134/S0869864323060069
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Supersonic gas-liquid jets of a coaxial atomizer at high liquid concentrations are studied experimentally. A complex of optical techniques is used for studying the droplet sizes: visualization and particle image velocimetry, laser Doppler anemometry, and Malvern Spraytec instrument. The research shows that the velocity and concentration profiles change with flow rate growth: an extended region with small droplet velocities appears behind the bow shock wave; in this case, the concentration decreases significantly slower than that at low liquid flow rates. A small increase in the jet energy at liquid flow rates greater than 100 l/h and a noticeable increase in the droplet size testify that the gas jet capabilities for breaking up the liquid in the described regimes are exhausted.
引用
收藏
页码：1031 / 1042
页数：12
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