TY - JOUR
T1 - A novel unsteady aerodynamic Reduced-Order Modeling method for transonic aeroelastic optimization
AU - Wang, Ziyi
AU - Zhang, Weiwei
AU - Wu, Xiaojing
AU - Chen, Kongjin
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/10
Y1 - 2018/10
N2 - In aircraft design, structural optimization concerning transonic aeroelastic issues is computationally impractical, due to a great number of aeroelastic analyses are required in iterative process. Reduced-Order Model (ROM) method is convenient for transonic aeroelastic analyses; however, current ROMs are not reusable during iteration, hence the time consumption is still too high. To solve the problem, this study proposes an improved ROM suitable for Arbitrary Mode Shapes (ROM-AMS), which is reusable in iterative process. By adopting Principal Component Analysis, ROM-AMS method significantly reduces the number of basis mode shapes, while improves the accuracy of flutter analysis. In an optimization case, the weight of a cropped delta wing is reduced by 28.46%, and the efficiency is 900 times higher than that of traditional ROM approaches, which demonstrates the feasibility of this method in aeroelastic optimization.
AB - In aircraft design, structural optimization concerning transonic aeroelastic issues is computationally impractical, due to a great number of aeroelastic analyses are required in iterative process. Reduced-Order Model (ROM) method is convenient for transonic aeroelastic analyses; however, current ROMs are not reusable during iteration, hence the time consumption is still too high. To solve the problem, this study proposes an improved ROM suitable for Arbitrary Mode Shapes (ROM-AMS), which is reusable in iterative process. By adopting Principal Component Analysis, ROM-AMS method significantly reduces the number of basis mode shapes, while improves the accuracy of flutter analysis. In an optimization case, the weight of a cropped delta wing is reduced by 28.46%, and the efficiency is 900 times higher than that of traditional ROM approaches, which demonstrates the feasibility of this method in aeroelastic optimization.
KW - Aeroelasticity
KW - Flutter
KW - Optimization
KW - Reduced-order modeling
KW - Transonic flow
KW - Unsteady aerodynamics
UR - http://www.scopus.com/inward/record.url?scp=85050581257&partnerID=8YFLogxK
U2 - 10.1016/j.jfluidstructs.2018.07.001
DO - 10.1016/j.jfluidstructs.2018.07.001
M3 - 文章
AN - SCOPUS:85050581257
SN - 0889-9746
VL - 82
SP - 308
EP - 328
JO - Journal of Fluids and Structures
JF - Journal of Fluids and Structures
ER -