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Numerical Analysis of the Flow Through in Centrifugal Pumps


Author : Mohan Lamloumi Hedi, Kanfoudi Hatem, Zgolli Ridha

Pages : 216-221
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Abstract

 

In order to investigate the flow structure in centrifugal pump, a numerical model based on three dimensional (3D) incompressible Reynolds-Averaged Navier-Stokes equations has been developed. The turbulence viscosity is computed using the SST model (Shear Stress Transport). These transport equations associated with the appropriate boundaries conditions are solved by the CFX-13 finite-volume code. The computational domain composed by a single stator and rotor blade passages is discretized by a structured multi-block meshes. It describes in detail the numerical approach, based on an approach URANS (Unsteady Reynolds Average Navier Stokes) to predict the pressure fluctuations. On the other hand, simulations digital steady are made to construct the performance for centrifugal pump ( NS32). The unsteady simulations have allowed access to the temporal behavior of internal flow and compare the influence of two parameters in particular: mesh and conditions limits finding it difficult to model the pressure fluctuation The velocity and pressure fields show a radial thrust. Conformed to experimental visualization.

Keywords: Centrifugal pump, pressure distribution, velocity distribution, SST turbulence model

 

Article published in International Journal of Thermal Technologies, Vol.2, No.4 (Dec- 2012)

 

 

 

 

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