NUMERICAL SIMULATION OF FLUID FLOW IN A CENTRIFUGAL PUMP AT DESIGN POINT AND OFFDESIGN CONDITIONS

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ZOLJANAHI MOHAMMAD AMIN; ZIRAK SAADAT

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:2 Page(s): 88-98

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Information Journal Paper

Title

NUMERICAL SIMULATION OF FLUID FLOW IN A CENTRIFUGAL PUMP AT DESIGN POINT AND OFFDESIGN CONDITIONS

Author(s)

ZOLJANAHI MOHAMMAD AMIN | ZIRAK SAADAT | Issue Writer Certificate

Keywords

NUMERICAL SIMULATIONQ2

CENTRIFUGAL PUMPQ2

CHARACTERISTIC CURVEQ3

TURBULENCE INTENSITYQ2

CRUDE OILQ1

Abstract

This article presents a numerical investigation of fluid flow in one of the CENTRIFUGAL PUMPs of pump-Iran Corporation. A computational fluid dynamics (CFD) analysis is performed by using the CFX software for a wide range of volumetric flow rates for two different rotor speeds of 1450 rpm and 2900 rpm and the numerical results of water are validated against measured values of head and total efficiency with an overall acceptable agreement. The results have been obtained for CRUDE OIL as diagrams of head, total efficiency and other variables with respect to volumetric flow rate and then compared with results of water. Numerical results show that the absolute pressure on blade surfaces for CRUDE OIL is 705 kPa less than when using water. The absolute pressure difference between inlet and outlet of impeller and spiral volute for CRUDE OIL is comparatively less than those amounts in comparison with water. Also, by increasing the angular velocity of rotor, it was observed that high levels of TURBULENCE INTENSITY are transmitted from outlet pipe bending to the impeller outlet at volumetric flow rate of 30 m3/h which causes reduction in efficiency. Also, high levels of TURBULENCE INTENSITY for CRUDE OIL are less than those amounts in comparison with water within impeller area. Finally, to present an impeller pump head curve for CRUDE OIL over the overall operation range of the pump, a second order polynomial equation was fit to numerical data.

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APA: Copy

ZOLJANAHI, MOHAMMAD AMIN, & ZIRAK, SAADAT. (2016). NUMERICAL SIMULATION OF FLUID FLOW IN A CENTRIFUGAL PUMP AT DESIGN POINT AND OFFDESIGN CONDITIONS. MODARES MECHANICAL ENGINEERING, 16(2), 88-98. SID. https://sid.ir/paper/178814/en

Vancouver: Copy

ZOLJANAHI MOHAMMAD AMIN, ZIRAK SAADAT. NUMERICAL SIMULATION OF FLUID FLOW IN A CENTRIFUGAL PUMP AT DESIGN POINT AND OFFDESIGN CONDITIONS. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(2):88-98. Available from: https://sid.ir/paper/178814/en

IEEE: Copy

MOHAMMAD AMIN ZOLJANAHI, and SAADAT ZIRAK, “NUMERICAL SIMULATION OF FLUID FLOW IN A CENTRIFUGAL PUMP AT DESIGN POINT AND OFFDESIGN CONDITIONS,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 2, pp. 88–98, 2016, [Online]. Available: https://sid.ir/paper/178814/en

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