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- W3183422829 abstract "Reduced-order modeling (ROM) techniques present a computationally efficient strategy for simulation-based design studies. In this study, the intrusive and non-intrusive ROM techniques are assessed for their ability to simulate turbulent premixed flames. The intrusive approach corresponds to the Galerkin projection-based ROM referred to as the GP-ROM, and the non-intrusive approach is based on a radial basis function (RBF) multi-dimensional interpolation, referred to as RBF-ROM. The GP-ROM approach first constructs a reduced basis space using the proper orthogonal decomposition (POD) during an offline stage and then performs a projection of the governing system of equations to the reduced space leading to a low-dimensional dynamical system. The RBF-ROM approach constructs a number of multi-dimensional interpolation functions, which are then used to compute the POD coefficients at each time step. The two ROM techniques are applied to simulate a freely propagating methane/air turbulent premixed flame in the thin reaction zone regime at an initial Karlovitz number of 36 and Reynolds number of 63 by employing 10 POD modes. The results from the ROM cases are compared with the reference full order model case. The comparison demonstrates that the non-intrusive RBF-ROM approach yields more accurate results at a significantly reduced computational cost compared to the GP-ROM approach." @default.
- W3183422829 created "2021-08-02" @default.
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- W3183422829 creator A5037057272 @default.
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- W3183422829 date "2021-07-28" @default.
- W3183422829 modified "2023-09-27" @default.
- W3183422829 title "Application of Intrusive and Non-Intrusive Reduced Order Modeling Techniques for Simulation of Turbulent Premixed Flames" @default.
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- W3183422829 doi "https://doi.org/10.2514/6.2021-3634" @default.
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