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- W2316133035 abstract "In this study, gradient based optimization using efficient computational methods for fluid-structure interaction and corresponding coupled sensitivity analysis. Considering that many dynamic aeroelatic problems are periodic in nature, a spectral based formulation has been used to solve them. A harmonic balance method (HBM) is used for computational fluid dynamics and modal analysis based reduced order model is employed for computational structural dynamics. One of the advantages of the spectral based formulation is the computational efficiency obtained by eliminating transient flow solutions to reach a periodic steady state, through the solution approximation of a discrete Fourier series. Hence, dynamic aeroelastic problems are solved by the solution methods for the static aeroelastic problems. The spectral form of the governing equation also facilitate the application of the steady form of adjoint sensitivity analysis for the dynamically coupled system. Hence, the high memory and computational time required for unsteady adjoint sensitivity analysis are avoided in the current study by directly using the steady adjoint formulation. Using the adjoint sensitivity analysis formulation, the shape sensitivity of the AGARD 445.6 wing has been computed and has been validated by comparing with FDM based results. The wing surface has been parameterized using the amplitude of Hicks-Henne functions on the wing surface as the design parameters." @default.
- W2316133035 created "2016-06-24" @default.
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- W2316133035 date "2016-01-01" @default.
- W2316133035 modified "2023-09-27" @default.
- W2316133035 title "Gradient Based Optimization using Spectral Formulation-Based FSI and Coupled Sensitivity Analysis" @default.
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- W2316133035 doi "https://doi.org/10.2514/6.2016-1178" @default.
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