Characteristics of micro-explosive dispersion of gel fuel particles ignited in a high-temperature air medium

被引：11
|
作者：
Glushkov, D. O. [1 ]
Paushkina, K. K. [1 ]
Pleshko, A. O. [1 ]
Vysokomorny, V. S. [1 ]
机构：
[1] Natl Res Tomsk Polytech Univ, Heat & Mass Transfer Simulat Lab, 30 Lenin Ave, Tomsk 634050, Russia
来源：
FUEL | 2022年 / 313卷
基金：
俄罗斯科学基金会;
关键词：
Gel fuel; Particle; Heated motionless air; Ignition and combustion; Micro-explosion; Dispersion characteristics; LASER-INDUCED FLUORESCENCE; BURNING RATE; COMBUSTION; DROPLET; WATER; DELAY; COAL; OIL; MICROEXPLOSION; HYPERGOLICITY;
D O I：
10.1016/j.fuel.2021.123024
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The characteristics of processes developing during the ignition and combustion of single gel fuel particles with a mass of 10 mg in a high-temperature motionless air medium were investigated by means of a hardware and software system. The system featured a high-speed video camera, LED spotlights and a laptop with commercial and custom software. A group of fuel compositions was derived from oil-filled cryogels alone and with the addition of fine solid combustible components. Polyvinyl alcohol with 10 wt% in an aqueous solution was used as an organic polymer thickener. When exposed to rapid heating, fuel compositions (oil + aqueous solution of PVA + emulsifier; oil + coal dust + aqueous solution of PVA + emulsifier) were characterized by the micro-explosive dispersion of particles. The velocities of fine fragments after the micro-explosive dispersion of a fuel melt droplet were established when the air temperature was varied in the range of 700-1000 degrees C. The gas-vapor mixture temperature in the region of the fuel gas-phase combustion was determined using the original two-color pyrometry technique.
引用
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页数：13
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