Controllable velocity moment and prediction model for inlet guide vanes of a centrifugal pump

Controllable velocity moment and prediction model for inlet guide vanes of a centrifugal pump PurposeThis paper aims to investigate the effect of three-dimensional (3D) inlet guide vanes (IGVs) on performance of a centrifugal pump.Design/methodology/approachA design method for 3D IGVs is proposed based on the controllable velocity moment, which is determined by a fourth-order dimensionless function. Numerical simulation of the centrifugal pump with IGVs is carried out by solving the Reynolds-averaged Navier–Stokes equations. The method of frozen rotor is applied to couple the stationary and rotational domain.FindingsThe efficiency of pump with 3D IGVs is higher than that with 2D IGVs for most prewhirl angles, which validate the advancement of 3D IGVs on prewhirl regulation. The effect of prewhirl regulation at small flow rate is more significant than that at large flow rate.Originality/valueA prediction model of velocity moment based on the Oseen vortex is proposed to describe the flow pattern downstream the IGVs. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Engineering Computations Emerald Publishing

Controllable velocity moment and prediction model for inlet guide vanes of a centrifugal pump

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Publisher
Emerald Group Publishing Limited
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0264-4401
D.O.I.
10.1108/EC-05-2017-0186
Publisher site
See Article on Publisher Site

Abstract

PurposeThis paper aims to investigate the effect of three-dimensional (3D) inlet guide vanes (IGVs) on performance of a centrifugal pump.Design/methodology/approachA design method for 3D IGVs is proposed based on the controllable velocity moment, which is determined by a fourth-order dimensionless function. Numerical simulation of the centrifugal pump with IGVs is carried out by solving the Reynolds-averaged Navier–Stokes equations. The method of frozen rotor is applied to couple the stationary and rotational domain.FindingsThe efficiency of pump with 3D IGVs is higher than that with 2D IGVs for most prewhirl angles, which validate the advancement of 3D IGVs on prewhirl regulation. The effect of prewhirl regulation at small flow rate is more significant than that at large flow rate.Originality/valueA prediction model of velocity moment based on the Oseen vortex is proposed to describe the flow pattern downstream the IGVs.

Journal

Engineering ComputationsEmerald Publishing

Published: May 8, 2018

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