IMPROVED BLADE PROFILE LOSS AND DEVIATION ANGLE MODELS FOR ADVANCED TRANSONIC COMPRESSOR BLADINGS .1. A MODEL FOR SUBSONIC FLOW

New blading concepts as used in modern transonic axial-flow compressor s require improved loss and deviation angle correlations. The new mode l presented in this German Armed Forces paper incorporates several ele ments and treats blade-row flows having subsonic and supersonic inlet conditions separately. In the first part of this paper two proved and well-established: profile loss correlations for subsonic flows are ext ended to quasi-two-dimensional conditions and to custom-tailored blade designs, instead of a deviation angle correlation, a simple method ba sed on singularities is utilized The comparison between the new model and a recently published model demonstrates the improved accuracy in p rediction of cascade performance achieved by the new model.