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Effect of Velocity Slip on Head Prediction for Centrifugal Pumps as Turbines
- Source :
- Mathematical Problems in Engineering, Vol 2019 (2019)
- Publication Year :
- 2019
- Publisher :
- Hindawi, 2019.
-
Abstract
- The application of pumps as turbines (PAT) has been developed in several applications for energy recovery schemes. Therefore, establishing a performance correlation between pump mode and turbine mode is essential for selecting the proper machine. However, slip phenomenon is the challenges of head prediction for PAT. In this paper, the slip phenomenon of pump and PAT was revealed, and the slip factor was studied using CFD. The effect of slip on head prediction for PAT was analyzed, and a theoretical prediction model was presented considering slip factors. In order to validate the head prediction model, six centrifugal pumps with specific speed (ns) from 9 to 54.8 were tested as turbines. Results showed that the predicted head by the proposed method was in good agreement with the experimental data, and it is more accurate than Stepanoff, Alatorre-Frenk, Sharma, and Derakhshan models. This method can be applied in head prediction for low specific speed PAT ( ns
- Subjects :
- Article Subject
business.industry
020209 energy
General Mathematics
lcsh:Mathematics
Specific speed
General Engineering
Mode (statistics)
02 engineering and technology
Mechanics
Slip (materials science)
Computational fluid dynamics
Centrifugal pump
lcsh:QA1-939
Slip factor
Turbine
020303 mechanical engineering & transports
0203 mechanical engineering
lcsh:TA1-2040
0202 electrical engineering, electronic engineering, information engineering
Head (vessel)
business
lcsh:Engineering (General). Civil engineering (General)
Mathematics
Subjects
Details
- Language :
- English
- ISSN :
- 1024123X
- Database :
- OpenAIRE
- Journal :
- Mathematical Problems in Engineering
- Accession number :
- edsair.doi.dedup.....f663d955dc3c8d20bb9afd99f10efa91
- Full Text :
- https://doi.org/10.1155/2019/5431047