Off-Design Performance Prediction for Radial-Flow Impellers
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.
S. C. Lee and D. Chen, "Off-Design Performance Prediction for Radial-Flow Impellers," ASME, Gas Turbine and Aeroengine Congress and Exposition, American Society of Mechanical Engineers (ASME), Jan 1988.
The definitive version is available at http://dx.doi.org/10.1515/TJJ.1922.214.171.124
ASME, Gas Turbine and Aeroengine Congress and Exposition
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
Article - Conference proceedings
© 1988 American Society of Mechanical Engineers (ASME), All rights reserved.