Research on turbine flowfield analysis methods
Abstract
This report contains a description of conformal mapping procedures that can be used to generate computational grids for turbomachinery flowfield calculations, and to determine the incompressible potential flow on such a grid. The mapping procedures represent an extension of the Ives transformation to blade rows having a high solidity. The flowfield solution takes advantage of the fact that one of the mapping steps takes the blade row into a unit circle; by writing down the classical source/sink/vortex solution in this circle, it is possible to find the incompressible potential flow in the original cascade. This solution is of interest in its own right, and provides a useful initial condition for iterative or time marching calculational method.
 Publication:

Final Report
 Pub Date:
 January 1985
 Bibcode:
 1985catc.rept.....R
 Keywords:

 Computational Grids;
 Conformal Mapping;
 Flow Distribution;
 Grid Generation (Mathematics);
 Transonic Flow;
 Turbomachine Blades;
 Compressors;
 Finite Element Method;
 Incompressible Flow;
 Potential Flow;
 Transformations (Mathematics);
 Vortices;
 Fluid Mechanics and Heat Transfer