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Abstract
The current investigation is aimed to simulate the three-dimensional complex internal flow in a centrifugal pump impeller with five twisted blades by using specialized computational fluid dynamics (CFD) software ANSYS /FLUENT 14code with a standard k-e two-equation turbulence model. A single blade passage will be modeled to give more accurate results for static pressure contours on (blade, hub, and shroud). The potential consequences of static pressure associated with operating a centrifugal compressor in variable rotation speed. A numerical three-dimensional, through flow calculations to predict static pressure through a centrifugal pump were presented to examined the effect of rotational speed variation on the static pressure of the centrifugal pump . The contours of the static pressure of the blade, hub, and shroud indicates negative low static pressure in the suction side at high rotational speed (over operation limits )and the static pressure increases gradually until reach maximum value at the leading edge (6×10 5 Pa) of the blade.
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