Effect of blade top clearance on semi-open fuel pump performance and leakage vortex

doi:10.1007/s40430-023-04259-x

	Effect of blade top clearance on semi-open fuel pump performance and leakage vortex
	Liu, Xin 1; Li, Yibin1 ; Wang, Bo ; Zhang, Shengfu 1,2; Jing, Weimin 1; Li, Wanqi 1
	2023-06
发表期刊	JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
ISSN	1678-5878
卷号	45 期号:6
摘要	In order to reveal the fuel pump performance and leakage vortex characteristics under different blade top clearances, three schemes with blade top clearances of 0.1 mm, 0.2 mm, and 0.3 mm are chosen in this paper to reveal the fuel pump performance and leakage vortex characteristics under various blade top clearances. The SST k-omega turbulence model is then used to numerically simulate the semi-open fuel pump and analyze the fuel pump external characteristics, leakage vortex structure, motion trajectory, formation mechanism, blade pressure loading, and entropy generation rate in the impeller. The results demonstrate that as the blade top clearance increases, the hydraulic performance of the fuel pump decreases and the area of the separated vortex area in the blade top clearance area increases; at phi = 0.3 mm, the fuel pump's efficiency is about 6% less efficient than at phi = 0.1 mm; under all three blade top clearances, there are two leakage vortices, TLV1 and TLV2, with TLV1 having the most influence on the flow pattern in the main flow area. the pressure coefficient difference Delta C-p is the greatest near the leading edge of the blade, leading to the formation of TLV here; from the blade inlet to outlet, TLV motion trajectory gradually away from the blade suction surface, and as the blade top clearance becomes larger, the motion trajectory deviates from the blade suction surface more, which is mainly caused by the Koch force term in the vortex transport equation; entropy generation rate and TLV distribution location are basically the same, mainly distributed in the blade suction surface side. The closer the blade top clearance area, the higher the entropy generation rate; the larger the blade top clearance, the larger the distribution area of high entropy generation rate, the stronger the mechanical energy dissipation effect in the fuel pump.
关键词	Fuel pumps Blade top clearances Leakage vortex Vorticity transport equation Entropy generation
DOI	10.1007/s40430-023-04259-x
收录类别	SCIE ; EI
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Mechanical
WOS记录号	WOS:000994927400002
出版者	SPRINGER HEIDELBERG
EI入藏号	20232214156204
EI主题词	Energy dissipation
EI分类号	525.4 Energy Losses (industrial and residential) ; 631.1 Fluid Flow, General ; 641.1 Thermodynamics
来源库	WOS
原始文献类型	Article
引用统计	被引频次[WOS]：0 [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/162108
专题	能源与动力工程学院
作者单位	1.Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China; 2.Lanzhou Wanli Aero Electromech Ltd Corp Co Ltd, Lanzhou 730070, Peoples R China
第一作者单位	能源与动力工程学院
第一作者的第一单位	能源与动力工程学院
推荐引用方式 GB/T 7714	Liu, Xin,Li, Yibin,Wang, Bo,et al. Effect of blade top clearance on semi-open fuel pump performance and leakage vortex[J]. JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING,2023,45(6).
APA	Liu, Xin,Li, Yibin,Wang, Bo,Zhang, Shengfu,Jing, Weimin,&Li, Wanqi.(2023).Effect of blade top clearance on semi-open fuel pump performance and leakage vortex.JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING,45(6).
MLA	Liu, Xin,et al."Effect of blade top clearance on semi-open fuel pump performance and leakage vortex".JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING 45.6(2023).