@inproceedings{13ecede1a88341fdae871ada5577193b,
title = "Natural-Laminar-Flow Airfoil Design Optimization Considering Crossflow Instability When Configured on a Swept Wing",
abstract = "This paper proposes a novel design optimization method for transonic natural-laminar-flow (NLF) airfoils allowing for suppressing crossflow instability (CFI) when configured on a three-dimensional (3-D) swept wing. The distribution of the nondimensionalized crossflow pressure gradient (CFPG), a newly proposed flow parameter by the authors, is used as the objective flow characteristics related to crossflow in the corresponding 3-D case and combined with the total drag as the weighted objective function. The flow field and transition location are obtained by an extensively verified Reynolds averaged Navier-Stokes equations flow solver coupled an eN method based on the linear stability theory. A surrogate-based optimization framework with Kriging model and parallel infill-sampling method is used to solve the optimization problem. The proposed method is demonstrated by the design optimization of a transonic NLF airfoil named NPU-LSC-72613, which is assumed to be configured on an infinite wing with a 30 deg sweep angle. Damped CFI and extensive laminar flow are obtained on the wing's upper surface, which demonstrates the feasibility of using the nondimensionalized CFPG to enable a 2-D NLF airfoil design optimization considering 3-D effects of crossflow.",
keywords = "Crossflow instability, Design optimization, Natural laminar flow",
author = "Xu, {Zhen Ming} and Han, {Zhong Hua} and Song, {Wen Ping}",
note = "Publisher Copyright: {\textcopyright} 2021 32nd Congress of the International Council of the Aeronautical Sciences, ICAS 2021. All rights reserved.; 32nd Congress of the International Council of the Aeronautical Sciences, ICAS 2021 ; Conference date: 06-09-2021 Through 10-09-2021",
year = "2021",
language = "英语",
series = "32nd Congress of the International Council of the Aeronautical Sciences, ICAS 2021",
publisher = "International Council of the Aeronautical Sciences",
booktitle = "32nd Congress of the International Council of the Aeronautical Sciences, ICAS 2021",
}