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Erschienen in: Optimization and Engineering 3/2020

09.11.2019 | Research Article

Algorithmic differentiation of an industrial airfoil design tool coupled with the adjoint CFD method

verfasst von: Mladen Banović, Ilias Vasilopoulos, Andrea Walther, Marcus Meyer

Erschienen in: Optimization and Engineering | Ausgabe 3/2020

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Abstract

Computer Aided Design (CAD) systems and tools are considered essential for industrial design. They construct and manipulate the geometry of a certain component with an arbitrary set of design parameters. However, it is a challenging task to incorporate the parametric definition in a gradient-based shape optimization loop, since the CAD libraries usually do not provide shape sensitivities w.r.t. the design parameters of the model to be optimized. Typically, these derivatives are evaluated with inaccurate finite differences. On the contrary, to obtain the exact derivative information, algorithmic differentiation (AD) can be applied if the CAD sources are available. In this study, the Rolls-Royce in-house airfoil design and blade generation tool Parablading is differentiated using the AD software tools ADOL-C and Tapenade. The differentiated CAD tool is coupled with a discrete adjoint CFD solver that is part of the Rolls-Royce in-house HYDRA suite of codes, also produced by algorithmic differentiation. This differentiated design chain is used to perform gradient-based shape optimization of the TU Berlin TurboLab stator test-case w.r.t.  minimize the total pressure loss and exit angle deviation objectives.

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Literatur
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Metadaten
Titel
Algorithmic differentiation of an industrial airfoil design tool coupled with the adjoint CFD method
verfasst von
Mladen Banović
Ilias Vasilopoulos
Andrea Walther
Marcus Meyer
Publikationsdatum
09.11.2019
Verlag
Springer US
Erschienen in
Optimization and Engineering / Ausgabe 3/2020
Print ISSN: 1389-4420
Elektronische ISSN: 1573-2924
DOI
https://doi.org/10.1007/s11081-019-09474-x

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