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Authors: Eirikur Jonsson ; Leifur Leifsson and Slawomir Koziel

Affiliation: Reykjavik University, Iceland

Keyword(s): Transonic Wing Design, CFD, Surrogate-based Optimization, Variable-resolution Modeling, Space Mapping.

Abstract: This paper presents an efficient aerodynamic design optimization methodology for wings in transonic flow. The approach replaces the computationally expensive high-fidelity CFD model in an iterative optimization process with a corrected polynomial approximation model constructed by a cheap low-fidelity CFD model. The output space mapping technique is used to correct the approximation model to yield an accurate predictor of the high-fidelity one. Both CFD models employ the RANS equations with the Spalart-Allmaras turbulence model, but the low-fidelity one uses a coarse mesh resolution and relaxed convergence criteria. Our method is applied to a constrained lift maximization of a rectangular wing at transonic conditions with 3 design variables. The optimized designs are obtained by using 50 low-fidelity CFD model evaluations to set up the approximation model and 7 to 8 high-fidelity model evaluations, equivalent to around 10 high-fidelity CFD model evaluations.

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Paper citation in several formats:
Jonsson, E.; Leifsson, L. and Koziel, S. (2012). Transonic Wing Optimization by Variable-resolution Modeling and Space Mapping. In Proceedings of the 2nd International Conference on Simulation and Modeling Methodologies, Technologies and Applications (SIMULTECH 2012) - SDDOM; ISBN 978-989-8565-20-4; ISSN 2184-2841, SciTePress, pages 489-498. DOI: 10.5220/0004164004890498

@conference{sddom12,
author={Eirikur Jonsson. and Leifur Leifsson. and Slawomir Koziel.},
title={Transonic Wing Optimization by Variable-resolution Modeling and Space Mapping},
booktitle={Proceedings of the 2nd International Conference on Simulation and Modeling Methodologies, Technologies and Applications (SIMULTECH 2012) - SDDOM},
year={2012},
pages={489-498},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004164004890498},
isbn={978-989-8565-20-4},
issn={2184-2841},
}

TY - CONF

JO - Proceedings of the 2nd International Conference on Simulation and Modeling Methodologies, Technologies and Applications (SIMULTECH 2012) - SDDOM
TI - Transonic Wing Optimization by Variable-resolution Modeling and Space Mapping
SN - 978-989-8565-20-4
IS - 2184-2841
AU - Jonsson, E.
AU - Leifsson, L.
AU - Koziel, S.
PY - 2012
SP - 489
EP - 498
DO - 10.5220/0004164004890498
PB - SciTePress

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