Title

Off-Design Performance Prediction for Radial-Flow Impellers

Abstract

A numerical method was developed to consider the two-dimensional flowfield between impeller blades of a given geometry. Solution of the laminar Navier-Stokes equations in geometry-oriented coordinates was obtained for stream functions and vorticities. Velocities and pressures were calculated to determine the output fluid-energy head. The circumferential components of the normal and shear stresses along the blade were evaluated to give the input mechanical-energy head. Performance predictions were obtained for different load conditions. Comparisons were made with the measured velocity vectors of the flowfield of an air-pump impeller and with the measured performance of a production water pump, good agreements were reached.

Meeting Name

ASME, Gas Turbine and Aeroengine Congress and Exposition

Department(s)

Mechanical and Aerospace Engineering

Keywords and Phrases

Flow Distributin; Performance Prediction; Pump Impellers; Radial Flow; Rotor Blades; Two Dimensional Flow; Cascade Flow; Navier-Stokes Equation; Time Dependence; Velocity

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1988 American Society of Mechanical Engineers (ASME), All rights reserved.

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