Fluid Machinery Optimization

초록

Current trend of design optimization is introduced for turbomachinery that is a major part of fluid machinery. Turbomachines are elementary components in a variety of engineering systems including aircraft engines, gas and steam turbines, etc. Design optimization of turbomachinery became more practical due to development of optimization and performance analysis techniques as well as the high-speed computers. Performance analysis using three-dimensional Reynolds-averaged Navier–Stokes analysis also became popular. However, turbulence modeling is still a key issue in the analysis. Especially, as for the design of rotor or stator blades, optimization of blade stacking line modifying sweep, lean, and skew based on the three-dimensional analysis greatly improved the performance of the blade in the last decade. Parametric modeling of turbomachinery shapes has been performed usually based on Bezier or B-spline curves. A variety of optimization methods, gradient-based or statistical, have been developed. Among them, surrogate modeling approaches are being widely used in multidisciplinary design optimization of turbomachinery due to their easy implementation and affordable computing time. © 2010 John Wiley & Sons, Ltd. All rights reserved.

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