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American Journal of Innovative Research & Applied Sciences
| ISSN: 2429-5396 (e) | www.american-jiras.com | |
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| | ARTICLES | Am. J. innov. res. appl. sci. Volume 7, Issue 5, Pages 266-275 (November 2018) |
| Research Article |
American Journal of innovative
Research & Applied Sciences
Research & Applied Sciences
ISSN 2429-5396 (Online)
OCLC Number: 920041286
OCLC Number: 920041286
| NOVEMBER VOLUME 7 | N° 5 | 2018 |
Authors Contact
*Correspondant author and authors Copyright © 2018:
| Wajahat Hassan *1 | and | Muhammad Naeem 1 |
*Correspondant author and authors Copyright © 2018:
| Wajahat Hassan *1 | and | Muhammad Naeem 1 |
Affiliation.
1. Institute of Space Technology | Aeronautics & Astronautics | Islamabad | Pakistan |
This article is made freely available as part of this journal's Open Access: ID | Wajahat-ManuscriptRef.1-ajira201018 |
Abstract
Background: The Centrifugal pump efficiency is prompted with the aid of secondary flows like a tip leakage and boundary layer separation. The main goal is to analyze, integrate influences of micro-grooves and winglets at the overall performance of the centrifugal pump. Method: Four semi-open impeller geometries are made in keeping with following sequences-the smooth impeller having a smooth hub, winglet impeller having a smooth hub, the smooth impeller having micro grooves on the hub, and the impeller having winglet and micro grooves on the hub. Turbo Grid is used to generate hexahedral meshing in enormously oriented style. The viscous model used is SST (Shear Stress Transport). CFD is employed in a steady state to numerically examine the flow characteristic according to pressure, velocity, and shaft power. Result: After simulation, it is noticed that winglets and micro-grooves create negative effects on the pump head, static pressure and total pressure. However, on the other hand, total efficiency and static efficiency in last three cases are increased as compared to case-1. Conclusion: Shaft power of pump is decreased by making winglets impellers and micro grooves on the hub of the impeller. It depicts that the pump is operating at less power.
Keywords: Trailing Edge, Vortex, Impeller, Efficiency, SST.
Background: The Centrifugal pump efficiency is prompted with the aid of secondary flows like a tip leakage and boundary layer separation. The main goal is to analyze, integrate influences of micro-grooves and winglets at the overall performance of the centrifugal pump. Method: Four semi-open impeller geometries are made in keeping with following sequences-the smooth impeller having a smooth hub, winglet impeller having a smooth hub, the smooth impeller having micro grooves on the hub, and the impeller having winglet and micro grooves on the hub. Turbo Grid is used to generate hexahedral meshing in enormously oriented style. The viscous model used is SST (Shear Stress Transport). CFD is employed in a steady state to numerically examine the flow characteristic according to pressure, velocity, and shaft power. Result: After simulation, it is noticed that winglets and micro-grooves create negative effects on the pump head, static pressure and total pressure. However, on the other hand, total efficiency and static efficiency in last three cases are increased as compared to case-1. Conclusion: Shaft power of pump is decreased by making winglets impellers and micro grooves on the hub of the impeller. It depicts that the pump is operating at less power.
Keywords: Trailing Edge, Vortex, Impeller, Efficiency, SST.
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| Wajahat Hassan *1 | and | Muhammad Naeem 1 |. Am. J. innov. res. appl. sci. 2018; 7(5):266-275.
| PDF FULL TEXT | | XML FILE | | Received | 19 October 2018 | | Accepted | 02 November 2018 | | Published | 15 November 2018 |