Academic Journal
Multi-Fidelity Gradient-Based Strategy for Robust Optimization in Computational Fluid Dynamics
| العنوان: | Multi-Fidelity Gradient-Based Strategy for Robust Optimization in Computational Fluid Dynamics |
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| المؤلفون: | Serafino, Aldo, Obert, Benoit, Cinnella, Paola |
| المساهمون: | Institut Jean Le Rond d'Alembert (DALEMBERT), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | ISSN: 1999-4893 ; Algorithms ; https://hal.science/hal-03892561 ; Algorithms, 2020, 13 (10), pp.248. ⟨10.3390/a13100248⟩. |
| بيانات النشر: | HAL CCSD MDPI |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | robust design optimization uncertainty quantification gradient enhanced kriging method of moments multi-fidelity surrogate continuous adjoint discrete adjoint, robust design optimization, uncertainty quantification, gradient enhanced kriging, method of moments, multi-fidelity surrogate, continuous adjoint, discrete adjoint, [SPI]Engineering Sciences [physics] |
| الوصف: | International audience ; Efficient Robust Design Optimization (RDO) strategies coupling a parsimonious uncertainty quantification (UQ) method with a surrogate-based multi-objective genetic algorithm (SMOGA) are investigated for a test problem in computational fluid dynamics (CFD), namely the inverse robust design of an expansion nozzle. The low-order statistics (mean and variance) of the stochastic cost function are computed through either a gradient-enhanced kriging (GEK) surrogate or through the less expensive, lower fidelity, first-order method of moments (MoM). Both the continuous (non-intrusive) and discrete (intrusive) adjoint methods are evaluated for computing the gradients required for GEK and MoM. In all cases, the results are assessed against a reference kriging UQ surrogate not using gradient information. Subsequently, the GEK and MoM UQ solvers are fused together to build a multi-fidelity surrogate with adaptive infill enrichment for the SMOGA optimizer. The resulting hybrid multi-fidelity SMOGA RDO strategy ensures a good tradeoff between cost and accuracy, thus representing an efficient approach for complex RDO problems. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | hal-03892561; https://hal.science/hal-03892561; https://hal.science/hal-03892561/document; https://hal.science/hal-03892561/file/algorithms-13-00248.pdf |
| DOI: | 10.3390/a13100248 |
| الاتاحة: | https://hal.science/hal-03892561 https://hal.science/hal-03892561/document https://hal.science/hal-03892561/file/algorithms-13-00248.pdf https://doi.org/10.3390/a13100248 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.6DE22F9C |
| قاعدة البيانات: | BASE |
| DOI: | 10.3390/a13100248 |
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