| Autor: |
Mushatet, Khudheyer S., Wahab, Abdul Kareem A., Ajeel, Wissam H. |
| Zdroj: |
Advanced Materials Research; February 2012, Vol. 468 Issue: 1 p360-364, 5p |
| Abstrakt: |
In this paper, an experimental and numerical study has been conducted to investigate the performance and dynamic effects of the centrifugal pump . Two impellers having different diameters were tested. The aim of the present study is to extend the scientific research of the related studies to high speed centrifugal pump which has a logarithmic profile. The variation of dynamic pressure fluctuations on the front wall of volute casing around the impeller is predicted at different values of volume flow rates. Also the pump performance was tested for the considered values of the volume flow rate. The governing partial differential equations of continuity and momentum were dicretised to algebraic equations by using CFD commercial code(FLUENT 6.3). This code has the ability to transfer the complex physical domain to a computational one by using GAMBIT software. The effect of turbulence was simulated by using a standard k-ε model. The obtained results show th at the dynamic pressure fluctuations significantly dependent on angular position and volume flow rate. It is observed that the pump efficiency is increased as impeller diameter increases. |
| Databáze: |
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