Breakup and collision of water droplet for mass injection pre-compression cooling

被引：7

作者：

Hu, Feng ^{[1
]}

Lu, Yuming ^{[1
]}

Wu, Feng ^{[2
,3
]}

Ming, Yuzhou ^{[4
]}

Xia, Guozheng ^{[4
]}

Zhang, Hai ^{[1
]}

机构：

[1] Harbin Engn Univ, Coll Power & Energy Engn, Harbin 150001, Peoples R China

[2] AECC Sichuan Gas Turbine Estab, Sci & Technol Altitude Simulat Lab, Mianyang 621000, Sichuan, Peoples R China

[3] Northwestern Polytech Univ, Sch Power & Energy, Xian 710129, Shaanxi, Peoples R China

[4] China Nucl Power Engn Co, Beijing 100089, Peoples R China

来源：

AEROSPACE SCIENCE AND TECHNOLOGY | 2021年 / 116卷

关键词：

Water injection; Droplets; Collision; Breakup; Nozzle; GAS-TURBINE PERFORMANCE; COMBINED-CYCLE; INLET AIR; FLOW; TEMPERATURE; SENSITIVITY; COMBUSTION; FILM;

D O I：

10.1016/j.ast.2021.106866

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The breaking and bouncing coefficients of water droplets in water injection pre-compression cooling are tested in this paper. The test results show that there appears bimodal structure on the droplet size distribution of water droplets due to the combination and secondary crushing of water droplets under the action of high-speed airflow; water droplets are mainly broken by shear under most measuring conditions; when the spray pressure is higher than a certain pressure value (7MPa), the interference between the nozzles is significantly reduced; the impingement of water droplets against blades would increase the average diameter of particles. By test verification, the optimal rebound coefficient and elastic recovery coefficient are obtained. The experimental results can improve the computational accuracy of the two-phase flow of CFD calculation and make it much closer to the real test or situation. (C) 2021 Elsevier Masson SAS. All rights reserved.

引用

页数：18

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