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RESEARCH PAPERS

# Effects of Splitter Blades on Deep Well Pump Performance

[+] Author and Article Information
M. Gölcü1

Pamukkale University, Mechanical Education Department, Kinikli, Denizli, Turkeymgolcu@pau.edu.tr

N. Usta

Pamukkale University, Mechanical Engineering Department, Camlik, Denizli, Turkey

Y. Pancar

Osman Gazi University, Mechanical Engineering Department, Eskisehir, Turkey

1

Corresponding author. E-mail: mgolcu@pau.edu.tr (M. Gölcü)

J. Energy Resour. Technol 129(3), 169-176 (Jan 18, 2007) (8 pages) doi:10.1115/1.2748810 History: Received May 20, 2005; Revised January 18, 2007

## Abstract

Impellers with splitter blades have been used in turbomachinery design for both pumps and compressors. Increasing the number of blades increases the head of the pump, however, it causes a decrease in efficiency due to the blockage effect of the blade thickness and friction. The impellers with splitter blades between two long blades can be used to alleviate the serious clogging at the inlet of the impeller caused by more blades. In this study, impellers having a different number of blades ($z=3$, 4, 5, 6, and 7) with and without splitter blades (25, 35, 50, 60, and 80% of the main blade length) were tested in a deep well pump. The effects of the main blade number and lengths of splitter blades on the pump performance have been investigated. While the number of main blades and the lengths of the splitter blades of a principal impeller were changed, the other parameters such as pump casing, blade inlet and outlet angles, blade thickness, impeller inlet and outlet diameters, were kept the same.

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Topics: Impellers , Blades , Pumps

## Figures

Figure 1

Deep well pump test rig (not scale)

Figure 2

The dimensions of the principal impeller

Figure 3

An impeller (z=5) with splitter blades (Ls=0.35L)

Figure 4

Impeller (z=5) models

Figure 5

(a)Hm-Q, (b)Pe-Q and (c)ηg-Q characteristics of impellers with different number of blades

Figure 6

(a)Hm-Q, (b)Pe-Q, and (c)ηg-Q characteristics of the impeller (z=3) with different lengths of splitter blades

Figure 7

(a)Hm-Q(b)Pe-Q, and (c)ηg-Q characteristics of the impeller (z=4) with different lengths of splitter blades

Figure 8

(a)Hm-Q, (b)Pe-Q, and (c)ηg-Q characteristics of the impeller (z=5) with different lengths of splitter blades

Figure 9

(a)Hm-Q, (b)Pe-Q, and (c)ηg-Q characteristics of the impeller (z=6) with different lengths of splitter blades

Figure 10

(a)Hm-Q, (b)Pe-Q, and (c)ηg-Q, characteristics of the impeller (z=7) with different lengths of splitter blades

Figure 11

Figure 12

Variation of power versus factors

Figure 13

Variation of efficiency versus factors

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