Study on improving cavitation performance of centrifugal pump by perforation at the front cover plate

doi:10.5293//IJFMS.2020.13.4.668

	Study on improving cavitation performance of centrifugal pump by perforation at the front cover plate
	Dongwei, Wang 1,2; Zailun, Liu 1,2; Wei, Han 1,2
刊名	International Journal of Fluid Machinery and Systems
	2020
卷号	13 期号:4 页码:668-676
关键词	Centrifugal pumps Impellers Turbulence models
DOI	10.5293//IJFMS.2020.13.4.668
英文摘要	To improve the cavitation performance of a centrifugal pump, the high-pressure liquid in the front pump cavity is introduced into the cavitation area on the back of the blade by perforated holes at the front cover of the impeller. Based on the RNG k-Ε turbulence model and Zwart-Gerber-be1amri cavitation model, the numerical calculation and analysis of the cavitation flow field in the model before and after perforation under different cavitation numbers is carried out by FLUENT. The results show that: The perforation at the front cover plate can effectively improve the pressure value of the cavitation area on the back of the blade. To some extent, the change of pressure gradient restrains the development of cavitation. The perforation at the front cover plate can effectively reduce the integral value of the cavitation bubble in the passage, improve the flow passage conditions in the impeller passage, and reduce the blockage degree of the cavitation to the passage. At the same time, the fluctuation range of the cavitation volume in the impeller is small in a rotation cycle after the perforation. It can be seen that the way of perforation at the front cover plate can effectively improve the cavitation performance of the centrifugal pump. © 2020, Turbomachinery Society of Japan. All rights reserved.
语种	英语
出版者	Turbomachinery Society of Japan
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151229]
专题	能源与动力工程学院
作者单位	1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; Gansu province; 730050, China; 2.Key Laboratory of Fluid Machinery and Systems, Lanzhou; Gansu Province; 730050, China
推荐引用方式 GB/T 7714	Dongwei, Wang,Zailun, Liu,Wei, Han. Study on improving cavitation performance of centrifugal pump by perforation at the front cover plate[J]. International Journal of Fluid Machinery and Systems,2020,13(4):668-676.
APA	Dongwei, Wang,Zailun, Liu,&Wei, Han.(2020).Study on improving cavitation performance of centrifugal pump by perforation at the front cover plate.International Journal of Fluid Machinery and Systems,13(4),668-676.
MLA	Dongwei, Wang,et al."Study on improving cavitation performance of centrifugal pump by perforation at the front cover plate".International Journal of Fluid Machinery and Systems 13.4(2020):668-676.