Abstract

Iterative inverse design methods for compressor and turbine blades, with prescribed Mach number or pressure distribution, are presented. It is explained how the permeable wall concept can be used to define the blade modifications required to obtain the target performances with a small number of iterations. It is shown how the method can be combined with potential flow methods, Euler and Navier Stokes solvers. Each method is illustrated with examples. Advantages and problems are discussed and practical solutions to the existancy problem and mechanical constraints are proposed.

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