Transonic Wing Optimization by Variable-resolution Modeling and Space Mapping

Eirikur Jonsson, Leifur Leifsson, Slawomir Koziel

2012

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 Harvard Style

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 - Volume 1: SDDOM, (SIMULTECH 2012) ISBN 978-989-8565-20-4, pages 489-498. DOI: 10.5220/0004164004890498


in Bibtex Style

@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 - Volume 1: SDDOM, (SIMULTECH 2012)},
year={2012},
pages={489-498},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004164004890498},
isbn={978-989-8565-20-4},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 2nd International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SDDOM, (SIMULTECH 2012)
TI - Transonic Wing Optimization by Variable-resolution Modeling and Space Mapping
SN - 978-989-8565-20-4
AU - Jonsson E.
AU - Leifsson L.
AU - Koziel S.
PY - 2012
SP - 489
EP - 498
DO - 10.5220/0004164004890498