Optimization of a Centrifugal Impeller Using Evolutionary Algorithms

Author:

Bartold Andreas1,Joos Franz1

Affiliation:

1. Helmut-Schmidt-University, University of the Federal Armed Forces Hamburg, Hamburg, Germany

Abstract

This paper presents the development and application of an automated optimization method for aerodynamic design of centrifugal impellers. The algorithm used for the optimization is an evolutionary algorithm. Within this method the shape of the centrifugal impeller is described using B-Spline curves. The method introduced is used for redesigning an existing impeller with regard to maximization of the isentropic efficiency at a fixed operating point. Here the isentropic efficiency is calculated using the solution of a compressible three-dimensional Reynolds-averaged Navier-Stokes solver. The presentation will show that the method presented provides a new design that outperforms the original impeller with respect to the particular objective and demonstrates its usefulness.

Publisher

ASMEDC

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