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Multi-fidelity design optimization of transonic airfoils using shape-preserving response prediction

Multi-fidelity design optimization of transonic airfoils using shape-preserving response prediction,10.1016/j.procs.2010.04.146,Procedia Computer Scie

Multi-fidelity design optimization of transonic airfoils using shape-preserving response prediction  
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A computationally efficient methodology for transonic airfoil design optimization is presented. Our approach exploits a corrected physics-based low-fidelity surrogate that replaces, in the optimization process, an accurate but computationally expensive highfidelity airfoil model. Correction of the low-fidelity model is achieved by aligning its corresponding airfoil surface pressure distributions with that of the high-fidelity model using a shape-preserving response prediction technique. The presented method is applied to airfoil lift maximization in two-dimensional inviscid transonic flow, subject to constraints on shock induced pressure drag and airfoil cross-sectional area. More than a 90% reduction in high-fidelity function calls is achieved when compared to direct highfidelity model optimization.
Journal: Procedia Computer Science , vol. 1, no. 1, pp. 1311-1320, 2010
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