Academic Journal
Nonintrusive aerodynamic shape optimisation with a POD-DEIM based trust region method
| العنوان: | Nonintrusive aerodynamic shape optimisation with a POD-DEIM based trust region method |
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| المؤلفون: | Marques, Simao, Kob, Lucas, Robinson, Trevor T, Yao, Weigang |
| المصدر: | Marques , S , Kob , L , Robinson , T T & Yao , W 2023 , ' Nonintrusive aerodynamic shape optimisation with a POD-DEIM based trust region method ' , Aerospace , vol. 10 , no. 5 , 470 . https://doi.org/10.3390/aerospace10050470 |
| سنة النشر: | 2023 |
| المجموعة: | Queen's University Belfast: Research Portal |
| الوصف: | This work presents a strategy to build reduced-order models suitable for aerodynamic shape optimisation, resulting in a multifidelity optimisation framework. A reduced-order model (ROM) based on a discrete empirical interpolation (DEIM) method is employed in lieu of computational fluid dynamics (CFD) solvers for fast, nonlinear, aerodynamic modelling. The DEIM builds a set of interpolation points that allows it to reconstruct the flow fields from sets of basis obtained by proper orthogonal decomposition of a matrix of snapshots. The aerodynamic reduced-order model is completed by introducing a nonlinear mapping function between surface deformation and the DEIM interpolation points. The optimisation problem is managed by a trust region algorithm linking the multiple-fidelity solvers, with each subproblem solved using a gradient-based algorithm. The design space is initially restricted; as the optimisation trajectory evolves, new samples enrich the ROM. The proposed methodology is evaluated using a series of transonic viscous test cases based on wing configurations. Results show that for cases with a moderate number of design variables, the approach proposed is competitive with state-of-the-art gradient-based methods; in addition, the use of trust region methodology mitigates the likelihood of the optimiser converging to, shallower, local minima. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| DOI: | 10.3390/aerospace10050470 |
| الاتاحة: | https://pure.qub.ac.uk/en/publications/9a82fef2-93a2-4f56-b2af-5d8cb96db092 https://doi.org/10.3390/aerospace10050470 https://pureadmin.qub.ac.uk/ws/files/461097371/aerospace_10_00470.pdf |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.FDD36F7C |
| قاعدة البيانات: | BASE |
| DOI: | 10.3390/aerospace10050470 |
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