Flow Coupling between a Rotor and a Stator in Turbomachinery
Abstract
Successful turbomachine design requires detailed information about flow characteristics in order to predict the performance of a candidate geometry. The design needs information about the complex interaction between the blade rows when multistage blade rows are considered. A three-dimensional steady potential-flow code for a single blade row has been developed, where integral equations were derived to model the solid surfaces and the inlet condition for both external and internal flows with rotating or nonrotating lifting blades. Global iterations for the surface-panel source densities and the vortex strengths were used in conjunction with a Neumann iteration for solving the integral equations. In this paper, two numerical coupling procedures between the rotor and the stator are described. The phenomena of flow interaction between the rotor and the stator are studied and two test cases are presented. The performance of a vaneaxial fan is predicted using this procedure and the results indicate that the present numerical coupling procedure can be used by designers to select optimal blade shapes. Keywords: Turbine stators; Turbomachinery rotors/interactions; Performance engineering prediction; Potential flow; Lifting surfaces.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1990
- Accession Number
- ADA223882
Entities
People
- Ivan C. Jiang
- Thomas W. Bein
- Yu-tai Lee