THE NUMERICAL SIMULATION AND ANALYSIS OF PASSAGE VORTICES IN 3-D COMPRESSOR CASCADE

A simplified numerical simulation method for calculating passage vortices in a compressor cascade is presented,which can reduce computer time and save computer storage.The calculation employs the parabolized N S equiation.In order to analyze and investigate the passage vortices in the compressor cascade,the calculation has been carried out for a divergent curved channel similar to compressor cascade.It can be seen from obtained results that the passage vortices are composed of four parts,the flow behaviour near the suction surface on the both end of the straight compressor stator is deteriorated severely.For this reason the application of curved blades to the compressor is one of important means for improving the end wall flow behaviour.