A General Coupling Methodology for Unsteady Aerostructural Optimization with Analytic Derivatives
(2022) AIAA SCITECH 2022 Forum — Location: San Diego, CA, USA (3.January.2022)
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- Abstract
- Multidisciplinary design optimization offers a comprehensive approach for designing complex aerostructural systems such as wind turbines. Gradient-based multidisciplinary design optimization can be used to optimize complex systems using large numbers of design variables. However, the convergence of gradient-based optimization methods to an optimal solution is highly dependent on the accuracy of the provided derivatives. In this paper, we propose a general method for creating unsteady coupled systems for steady-state, eigenvalue, and time-domain analyses. We then describe how highly accurate derivatives may be obtained from these analyses using a combination of automatic differentiation and analytic methods (including the unsteady adjoint). Finally, we use our coupling method to assemble and test several aerostructural models relevant for wind turbine design.
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McDonnell, T., Cardoza, A., Caprace, D.-G., & Ning, A. (2022). A General Coupling Methodology for Unsteady Aerostructural Optimization with Analytic Derivatives. Proceedings of the AIAA SCITECH 2022 Forum. Published. AIAA SCITECH 2022 Forum, San Diego, CA, USA. https://doi.org/10.2514/6.2022-1291