Simple Genetic Algorithm is improved with Niche and adaptive operator

the new algorithm called Improved Genetic Algorithm(IGA) is parallelized using WinSock

multithread and Client-Server architecture.Blade profiles are parameterized using Hicks Henne function

2D cascade flow fields are calculated by using NavierStokes equation method.To form software for design optimization of compressor blade profiles

the IGA is combined with the above blade profile parameterization and flow field calculation method.The software can be used for design of compressor blades or improvement of existing blades.In this paper

design of two compressor blade profiles is taken as examples.The inlet Mach number of two cascades composed of the blades is about 0.5 and 0.9

respectively.To insure improvement of cascade aerodynamic performances in whole work ranges

the objective functions are constructed from consideration of both design and off design point performances.In the optimization procedure

three computers are run in parallel to reduce design time.The aerodynamic performances of optimal blades are obviously better than that of the initial blades.