A New Method (FTDCDF) for Blade Design of Axial/Mixed-Flow Compressors and its Applications
A new design method with unequal work along the height of the blade in the axial/mixed-flow compressors, called The Flow-Type Design of Controlled Diffusion Factors (FTDCDF), has been developed in this paper. The idea of the method is to control the distribution of the diffusion factors along the height of the blade in the vaneless space in order to design the blade with good aerodynamic properties. The theoretical basis of FTDCDF and its computational method are studied in detail. The corresponding computer program has been developed and worked out with good results. Comparison between the results of this method and those of other one is made and discussed. It shows that the FTDCDF and program have good accuracy and convergence. On the basis of the author’s recent works, the practical applications of the FTDCDF for blade design and the choosing of distribution of diffusion factors are described in detail and the matching between the distributions of the diffusion factors and C1u(r1) is discussed. A better design result of FTDCDF satisfying various design requirements is presented.