Mitigation of radial exciting force of rotary lobe pump by gradually varied gap
Li, Yi-Bin1,2; Guo, Dong-Sheng1; Li, Xiao-Bin3
2018-09-07
发表期刊ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS
ISSN1994-2060
卷号12期号:1页码:711-723
摘要This paper presents a new structure of a rotary lobe pump cavity with gradually varied gap to mitigate the magnitude and fluctuation of the radial exciting force on the rotor. The geometry of the rotary lobe pump cavity is specially designed, so that the gap between the rotor and cavity is gradually changed during the rotors' engaging. The flow in this geometry is numerically studied, and its effect on the pressure pulsation and radial exciting force is analysed, based on the dynamic mesh and local mesh reconstruction. Also, the mechanism of the mitigation of radial exciting force is briefly discussed. The value of the gap is an addition of gradually varied gap r (0 approximate to r(max)) and the base gap (original constant gap: 0.2mm). As for the results, it is found that as the varied gap r(max) value increases, the intensity of the reverse rotating vortex at the outlet decreases, and the secondary flow pulsation of the outlet section is effectively weakened. When r(max)=0.1mm, the radial exciting force in the y-direction on the rotor is reduced by 12% comparing with the equal gap, and the radial exciting force pulsation coefficient is 0.31. Meanwhile, the radial exciting force in the x-direction is reduced by 19% accordingly. The gradually varied gap cavity can effectively reduce the peak value of the pressure pulsation at outlet, weakening the influence of the rapid change of the outlet pressure on the radial exciting force. It is found that an optimal r(max) of 0.1 approximate to 0.15mm has a remarkable effect on the mitigation of pressure pulsation and radial exciting force.
关键词Rotary lobe pump pump cavity gradually varied gap radial exciting force flow pulsation numerically studied
DOI10.1080/19942060.2018.1517053
收录类别SCI ; SCIE
语种英语
资助项目National Natural Science Foundation of China[51369015] ; National Natural Science Foundation of China[51866009]
WOS研究方向Engineering ; Mechanics
WOS类目Engineering, Multidisciplinary ; Engineering, Mechanical ; Mechanics
WOS记录号WOS:000443987800001
出版者HONG KONG POLYTECHNIC UNIV, DEPT CIVIL & STRUCTURAL ENG
引用统计
被引频次:21[WOS]   [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/32457
专题能源与动力工程学院
通讯作者Guo, Dong-Sheng
作者单位1.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou, Gansu, Peoples R China;
2.Key Lab Fluid Machinery & Syst, Lanzhou, Gansu, Peoples R China;
3.Sun Yat Sen Univ, Sinofrench Inst Nucl Engn & Technol, Zhuhai, Peoples R China
第一作者单位能源与动力工程学院
通讯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
Li, Yi-Bin,Guo, Dong-Sheng,Li, Xiao-Bin. Mitigation of radial exciting force of rotary lobe pump by gradually varied gap[J]. ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS,2018,12(1):711-723.
APA Li, Yi-Bin,Guo, Dong-Sheng,&Li, Xiao-Bin.(2018).Mitigation of radial exciting force of rotary lobe pump by gradually varied gap.ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS,12(1),711-723.
MLA Li, Yi-Bin,et al."Mitigation of radial exciting force of rotary lobe pump by gradually varied gap".ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS 12.1(2018):711-723.
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