Axial-flow compressors losses

The calculation of the performance of an axial-flow compressor at both design and off-design conditions requires the knowledge of the various types of losses encountered in an axial-flow compressor. 

The accurate calculation and proper evaluation of the losses within the axial-flow compressor are as important as the calculation of the bladeloading parameter, since unless the proper parameters are controlled, the efficiency drops. The evaluation of the various losses is a combination of experimental results and theory. The losses are divided into two groups (1) losses encountered in the rotor, and (2) losses encountered in the stator. The losses are usually expressed as a loss of heat and enthalpy. 

Lieblein, S., Schwenk, F.C., and Broderick, R.L., Diffusion Factor for Estimating Losses and Limiting Blade Loading in Axial-Flow Compressor Blade Elements, NACA RM 53001 (1953). 

Brown, L.E., Axial Flow Compressor and Turbine Loss Coefficients A Comparison of Several Parameters, Journal of Engineering for Power, ASME Transactions 94A, pp. 193-201, 1972. 

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