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Traditionally, the three dimensional blade shape is very often designed by experienced designers by iteratively and manually modifying the blade shape, taking into account several results coming from aerodynamic computations and structural mechanics computations (static and dynamic), among others. In recent years, progress has been made in the development of automatic optimization packages capable of optimizing complex shapes using advanced CFD solver and optimization algorithms [4, 6]. However they are not yet commonly used in industrial shape optimization. A more intensive use still requires progress in the field of automatic shape optimization. Some of the issues are 1) the large number of design variables typical of industrial problems, 2) the efficient and robust shape parameterization, and 3) the ability to easily couple multiple simulation tools with minimum labor. |
