Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Numerical analysis of the flow field in a helico-axial multiphase pump stage with splitter blade in the diffuser
Submission Author:
Yina Faizully Quintero Gamboa , Colombia
Co-Authors:
Ramiro Gustavo Ramirez Camacho, Waldir de Oliveira, Yina Faizully Quintero Gamboa
Presenter: Yina Faizully Quintero Gamboa
doi://10.26678/ABCM.COBEM2017.COB17-0812
Abstract
The multiphase pumping is used essentially for the energy increase in a fluids mixture (liquid-gas-particle), becoming a good alternative in the transport of multiphase fluids. Helical-axial multiphase pump (BMHA) stage is composed of a helical-axial rotor that transmits to the fluid the kinetic energy and of a diffuser used for fluid homogenizing and directing for the following stage. The turbomachine rotor or diffuser may have only the main blades (conventional rotor), or may have a splitter blades set (interrupted blades) located between the main blades. Splitter blades are not found in the rotor/diffuser inlet region, as this would produce geometric strangulation, causing loss levels high. However, the splitter blades proper use allows reduction of loading of the main blades, such as vortex breakage or recirculations present in the flow. The present study aims to numerically simulate a BMHA stage, considering diffusers with different numbers of blades. The diffusers have a splitter blades set, placed in various angular positions (0.45-0.5-0.55) of the channels formed by the main blades with string length of 0.7 of the main blade. The highest efficiencies were obtained with a splitter blades number high and when the splitter blades are closer to the main blades internal surface.
Keywords
Helical-axial Multiphase Pump, Computational Fluid Dynamics CFD, Splitter Blades
