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Effect of impeller blades number on the performance of a centrifugal pump
- Source :
- Alexandria Engineering Journal, Vol 58, Iss 1, Pp 39-48 (2019)
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- A numerical investigation is carried out on a centrifugal pump to show the effect of the impeller blades number on the pump performance. Three different impellers with 5, 7, and 9 blades are tested numerically to determine the optimum blades number at rotational speed of 2800 rpm. Fluent 6.3.1 CFD commercial code is used to perform this work. It is found that the head coefficient ‘Ψyt’ and the efficiency ‘ηhyd’ are higher for the case of the impeller with 7 blades than that for the two cases of 5 and 9 blades. The losses decrease by increasing the blades number due to the reduction of the secondary flow for a certain limit.Then it increases again because the friction losses in the impeller and the mixing losses after the impeller yield an increment in the total losses in the region of the vaneless diffuser. This could be a result of the increasing number of the impeller channels. Keywords: Centrifugal pump, Blade number, CFD, Impeller losses, Mixing losses
- Subjects :
- Materials science
business.industry
020209 energy
General Engineering
Mixing (process engineering)
Rotational speed
02 engineering and technology
Mechanics
Computational fluid dynamics
Engineering (General). Civil engineering (General)
Secondary flow
Centrifugal pump
01 natural sciences
010305 fluids & plasmas
Diffuser (thermodynamics)
Impeller
0103 physical sciences
0202 electrical engineering, electronic engineering, information engineering
Fluent
TA1-2040
business
Subjects
Details
- ISSN :
- 11100168
- Volume :
- 58
- Database :
- OpenAIRE
- Journal :
- Alexandria Engineering Journal
- Accession number :
- edsair.doi.dedup.....575336fe3a7c8f48ed36749bfc07a585