Aeroelastic global structural optimization using an efficient CFD-based reduced order model

Li, Dongfeng; Ronch, Andrea Da; Chen, Gang; Li, Yueming

doi:10.1016/j.ast.2019.105354

Cited by 29 publications

(2 citation statements)

References 48 publications

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“…The agreement between the POD/ROM, CFD/CSD aeroelastic model and experimental data is good for all Mach numbers considered (0.499 to 1.141), including the well-known transonic dip of the flutter speed. The accuracy of full-order CFD/CSD aeroelastic model and POD/ROM solver have been evaluated over the years in a number of aeroelastic studies [16,34,36,52,53].The good agreement indicates that the POD/ROM solver has near the same accuracy as the nonlinear CFD model at small or moderate perturbation.…”

Section: Pod/rom Solver Validationmentioning

confidence: 99%

“…We have been developed and implemented an efficient aeroelastic CFD-based POD/ROM [34], which avoids the burden of reconstructing CFD-based POD/ROMs associated the exact model. The efficient aeroelastic CFD-based POD/ROM has been successfully applied to passive flutter suppression with high accuracy and efficiency, such as aeroelastic tailoring [35] and aeroelastic structural optimisation [36]. However, most of above-mentioned studies only considered the CFD-based ROMs for active or passive flutter suppression alone.…”

Section: Introductionmentioning

confidence: 99%

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An efficient reduced-order framework for active/passive hybrid flutter suppression

Wang

Ronch

et al. 2022

Aeronaut. j.

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Flutter suppression is an important measure to improve fatigue life and enhance the performance of aircraft in modern aircraft design. In order to design more effective controllers for flutter suppression with high efficiency, an efficient reduced-order framework for active/passive hybrid flutter suppression is proposed. The traditional CFD-based ROMs have been successfully applied to active flutter suppression with high accuracy and efficiency. But, when a structure modification is made such as in aeroelastic tailoring and aeroelastic structural optimisation, the structural model should be updated, and the expensive, time-consuming CFD-based ROMs have to be reconstructed; such a process is impractical for passive flutter suppression. To overcome the realistic challenge, an efficient reduced-order framework for active/passive hybrid flutter suppression is proposed by extending an efficient aeroelastic CFD-based POD/ROM which we have developed. The proposed framework is demonstrated and evaluated using an improved AGARD 445.6 wing model. The results show that the proposed framework can accurately predict the aeroelastic response for active/passive hybrid flutter suppression with high efficiency. It provides a powerful tool for active/passive hybrid flutter suppression, and therefore, is ideally suited to design more effective controllers, and may have the potential to reduce the overall cost of aircraft design.

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