On the aerodynamic shape optimization of cars using steady & compression-assisted unsteady adjoint
This article investigates the application of the continuous adjoint method to optimize passenger car shapes. Three optimization strategies, of industrial interest, are assessed in terms of computational cost and effectiveness of the optimization: (a) solving the Reynolds-Averaged Navier-Stokes (RANS...
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| Vydané v: | Engineering optimization Ročník 57; číslo 12; s. 3889 - 3910 |
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| Hlavní autori: | , , |
| Médium: | Journal Article |
| Jazyk: | English |
| Vydavateľské údaje: |
Taylor & Francis
02.12.2025
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| Predmet: | |
| ISSN: | 0305-215X, 1029-0273 |
| On-line prístup: | Získať plný text |
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| Shrnutí: | This article investigates the application of the continuous adjoint method to optimize passenger car shapes. Three optimization strategies, of industrial interest, are assessed in terms of computational cost and effectiveness of the optimization: (a) solving the Reynolds-Averaged Navier-Stokes (RANS) primal and adjoint equations; (b) solving the unsteady RANS primal and adjoint equations; and (c) solving the RANS adjoint equations based on a time-averaged Delayed-Detached Eddy Simulation solution, yielding an unsteady primal/steady adjoint approach. All of them include the adjoint to the Spalart-Allmaras turbulence model equation. All optimized shapes are re-evaluated using all of the aforementioned flow models, discussing differences in performance and flow features around the car. To reduce the turn-around time of unsteady adjoint, lossy data compression techniques, recently developed by the authors, are used for the first time in such a large-scale application. All methods are implemented as an extension of the publicly available adjointOptimisation library of OpenFOAM
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| ISSN: | 0305-215X 1029-0273 |
| DOI: | 10.1080/0305215X.2025.2457487 |