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• W3048581331 startingPage "2235" @default.
• W3048581331 abstract "For incompressible flow models, the pressure term serves as a Lagrange multiplier to ensure that the incompressibility constraint is satisfied. In engineering applications, the pressure term is necessary for calculating important quantities based on stresses like the lift and drag. For reduced-order models generated via a proper orthogonal decomposition, it is common for the pressure to drop out of the equations and produce a velocity-only reduced-order model. To recover the pressure, many techniques have been numerically studied in the literature; however, these techniques have undergone little rigorous analysis. In this work, we examine two of the most popular approaches: pressure recovery through the pressure Poisson equation and recovery via the momentum equation through the use of a supremizer stabilized velocity basis. We examine the challenges that each approach faces and prove stability and convergence results for the supremizer stabilized approach. We also investigate numerically the stability and convergence of the supremizer based approach, in addition to its performance against the pressure Poisson method." @default.
• W3048581331 created "2020-08-18" @default.
• W3048581331 creator A5011820135 @default.
• W3048581331 creator A5016112563 @default.
• W3048581331 date "2020-01-01" @default.
• W3048581331 modified "2023-10-02" @default.
• W3048581331 title "Error Analysis of Supremizer Pressure Recovery for POD based Reduced-Order Models of the Time-Dependent Navier--Stokes Equations" @default.
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• W3048581331 doi "https://doi.org/10.1137/19m128702x" @default.
• W3048581331 hasPublicationYear "2020" @default.
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