Multi-fidelity design optimisation of a transonic compressor rotor

Brooks, Christopher James, Forrester, A.I.J., Keane, A.J. and Shahpar, S. (2011) Multi-fidelity design optimisation of a transonic compressor rotor. In, 9th European Conf. Turbomachinery Fluid Dynamics and Thermodynamics, Istanbul, Turkey, 21 - 25 Mar 2011. 10pp.


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This paper demonstrates the application of Kriging based approximations to the aerodynamic
shape optimisation of a transonic compressor rotor where multiple fidelities of analysis are
available. An extension to the co-Kriging method is implemented, and attention is paid to the
efficient construction of the approximate models. The initial data sample within each level of
the model is selected using space-filling designs, and the covariance structure of the co-Kriging
models is obtained using a maximum likelihood estimation based on gradient optimisation with
adjoint functions. An efficient leave-one-out cross-validation method is used to estimate model
accuracy and is used to guide initial model refinement.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering and the Environment > Aeronautics, Astronautics and Computational Engineering > Computational Engineering & Design
ePrint ID: 198559
Date Deposited: 05 Oct 2011 09:03
Last Modified: 27 Mar 2014 19:46

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