Robust design of compressor fan blades against erosion

Kumar, Apurva, Keane, Andy J., Nair, Prasanth B. and Shahpar, Shahrokh (2006) Robust design of compressor fan blades against erosion. Journal of Mechanical Design, 128 (4), 864-873. (doi:10.1115/1.2202886).

Record type: Article

Abstract

This paper is concerned with robust aerodynamic design of compressor blades against erosion. The proposed approach combines a multiobjective genetic algorithm with geometry modeling methods, high-fidelity computational fluid dynamics, and surrogate models to arrive at robust designs on a limited computational budget. The multiobjective formulation used here allows explicit trade-off between the mean and variance of the performance to be carried out. Detailed numerical studies are presented for robust geometric design of a typical compressor fan blade section to illustrate the proposed methodology. The performance of a selected robust optimal solution on the Pareto front is compared to a deterministic optimal solution to demonstrate that significant improvements in the mean shift and variance can be achieved.

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