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International Journal for Numerical Methods in Engineering
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A Hybrid Pressure Formulation of the Face‐Centred Finite Volume Method for Viscous Laminar Incompressible Flows

Authors: Giacomini, Matteo; Cortellessa, Davide; Malikoski Vieira, Luan; Sevilla, Rubén; Huerta, Antonio;

A Hybrid Pressure Formulation of the Face‐Centred Finite Volume Method for Viscous Laminar Incompressible Flows

Abstract

ABSTRACTThis work presents a hybrid pressure face‐centred finite volume (FCFV) solver to simulate steady‐state incompressible Navier‐Stokes flows. The method leverages the robustness, in the incompressible limit, of the hybridisable discontinuous Galerkin paradigm for compressible and weakly compressible flows to derive the formulation of a novel, low‐order face‐based discretization. The incompressibility constraint is enforced in a weak sense by introducing an inter‐cell mass flux, defined in terms of a new, hybrid variable that represents the pressure at the cell faces. This results in a new hybridization strategy where cell variables (velocity, pressure, and deviatoric strain rate tensor) are expressed as a function of velocity and pressure at the barycentre of the cell faces. The hybrid pressure formulation provides first‐order convergence of all variables, including the stress, without the need for gradient reconstruction, thus being less sensitive to cell type, stretching, distortion, and skewness than traditional low‐order finite volume solvers. Numerical benchmarks of Navier‐Stokes flows at low and moderate Reynolds numbers, in two and three dimensions, are presented to evaluate the accuracy and robustness of the method. In particular, the hybrid pressure formulation outperforms the FCFV method when convective effects are relevant, achieving accurate predictions on significantly coarser meshes.

Keywords

FOS: Computer and information sciences, Numerical Analysis, Computational Engineering, Finance, and Science, 76M12, 65N30, 65N12, 76D05, 76D07, Fluid Dynamics (physics.flu-dyn), FOS: Physical sciences, Fluid Dynamics, Numerical Analysis (math.NA), Face-centred, Finite volume methods, Incompressible Navier-Stokes, Computational Engineering, Finance, and Science (cs.CE), Àrees temàtiques de la UPC::Física::Física de fluids::Flux de fluids, FOS: Mathematics, Hybrid methods, Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes numèrics, Hybridizable discontinuous Galerkin

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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