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- W3194893285 abstract "We present a stabilized POD–Galerkin reduced order method (ROM) for a Leray model. For the implementation of the model, we combine a two-step algorithm called Evolve-Filter (EF) with a computationally efficient finite volume method. In both steps of the EF algorithm, velocity and pressure fields are approximated using different POD basis and coefficients. To achieve pressure stabilization, we consider and compare two strategies: the pressure Poisson equation and the supremizer enrichment of the velocity space. We show that the evolve and filtered velocity spaces have to be enriched with the supremizer solutions related to both evolve and filter pressure fields in order to obtain stable and accurate solutions with the supremizer enrichment method. We test our ROM approach on a 2D unsteady flow past a cylinder at Reynolds number 0≤Re≤100. We find that both stabilization strategies produce comparable errors in the reconstruction of the lift and drag coefficients, with the pressure Poisson equation method being more computationally efficient." @default.
- W3194893285 created "2021-08-30" @default.
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- W3194893285 date "2021-08-25" @default.
- W3194893285 modified "2023-09-30" @default.
- W3194893285 title "Pressure Stabilization Strategies for a LES Filtering Reduced Order Model" @default.
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- W3194893285 doi "https://doi.org/10.3390/fluids6090302" @default.
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