Investigations of Secondary Flows in Axial Compressor Cascades.

Principal types of secondary flows in axial-flow compressors are discussed and the possibilities of measuring such flows are presented, e. g. the measuring of a plane behind a cascade. The primary parameters of influence for the occurrence of the secondary flows, are indicated and relations suggested. The kinetic energy of the secondary flows and the losses produced by them are proposed. The losses occuring in a compressor are exactly defined and the losses caused by secondary flows distinguished from the other losses involved. A few numerical results for a point of operation of a single-stage axial-flow compressor are dealt with.