Numerical study of outlet angle, separating vane and splitter blades  effect on the centrifugal pump performance

Ghazanfari Jajin, Elmira; Vajdi, Mohammad

Volume 39, Issue 54 (4-2024) 2024, 39(54): 1-14 | Back to browse issues page

Mendeley

Zotero

RefWorks

Ghazanfari Jajin E, Vajdi M. Numerical study of outlet angle, separating vane and splitter blades effect on the centrifugal pump performance. Journal of Pump 2024; 39 (54) : 1
URL: http://journal.pumpiran.com/article-1-85-en.html

Numerical study of outlet angle, separating vane and splitter blades effect on the centrifugal pump performance

Elmira Ghazanfari Jajin ^*

, Mohammad Vajdi

Abstract: (1158 Views)

Performance enhancement of centrifugal pumps is very important due to their widespread use in power plants, refinery industries and agriculture. Therefore, in the present study, the effect of geometrical parameters including main blade outlet angles, usage of splitter blades, and the impeller outlet width on centrifugal pump performance is investigated. Four types of impeller with splitter blades, which their lengths are 66 percent of the total length of the main blades, and blade outlet angles of 21.5^o, 23.5^o, 25.5^o, and 27.5^o with impeller outlet widths of 15mm are designed using CFTurbo Software. Applying the finite volume method and the k-ω SST turbulence model, The Ansys CFX software is used to simulate the three-dimensional turbulent fluid flow. The results show that, at the same flow rate, with the increase of the outlet angle and the addition of splitter blades, the amount of head increases, and its maximum amount reaches to 14.29 m. Also, the effect of splitter blades on the pump head at the design flow rate is higher than the other flow rates. The size of flow separation zones and slip angle is reduced by adding splitter blades which leads to an increase in the slip factor. Furthermore, adding splitter blades reduces the cavitation risk, while the pump efficiency is improved when the blades and splitter blade's outlet angles are modified.

Article number: 1

Keywords: Centrifugal pump, Impeller, Computational fluids, Splitter blades, Outlet angle.

Full-Text [PDF 2522 kb] (46 Downloads)

Type of Study: Research Paper | Subject: Design, analysis, and manufacturing of industrial centrifugal pumps