Calculation of the total pressure loss coefficient with three models for four supersonic axial-flow compressors (Berechnung des Totaldruck-Verlustkoeffizienten mit drei Modellen fuer vier Transschall-Axialverdichter)

Three semiempirical numerical models are evaluated in computations of the total pressure loss in four commercial axial-flow compressors. The theoretical bases of the models are briefly reviewed, and the results are compared with measurement data in graphs. Best agreement is obtained with the simplest of the models applied, the subsonic model of Messenger and Kennedy (1972); it is pointed out, however, that the more elaborate model of Strinning and Dunker (1977) permits selective variation of the design parameters to achieve an optimum configuration. (T.K.)